Skip to main content
ARS Home » Plains Area » Clay Center, Nebraska » U.S. Meat Animal Research Center » Livestock Bio-Systems » People & Locations » Bradley Freking (Brad)
Bradley A Freking (Brad)
Livestock Bio-Systems
Research Geneticist (Animals)

Phone: (402) 762-4278
Fax: (402) 762-4173

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Discovery of Novel Traits to Improve Efficiency and Sustainability of Different Sheep Production Systems
In-House Appropriated (D)
  Accession Number: 442610
Improving Robustness and Climatic Resilience in U.S. Sheep Populations through Genomics
Non-Funded Cooperative Agreement (N)
  Accession Number: 443038
Improving Robustness and Climatic Resilience in U.S. Sheep Populations through Genomics
Non-Funded Cooperative Agreement (N)
  Accession Number: 443114

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Factors affecting the length of productive life in U.S. Katahdin ewes - (Peer Reviewed Journal)
Sheep GEMS provides project update - (Trade Journal)
Freking, B.A. 2024. Sheep GEMS provides project update. Sheep Industry News. ASI Weekly Newsletter. October 4, 2024. p.4-5.
Sheep GEMS update: Using genotypes to reduce Ovine Progressive Pneumonia (OPP) susceptibilty - (Trade Journal)
Freking, B.A. 2024. Sheep GEMS update: Using genotypes to reduce Ovine Progressive Pneumonia (OPP) susceptibilty. Sheep Industry News. ASI Weekly Newsletter. August 30, 2024. p.2-3.
Heritability estimates for longevity-related traits in U.S. Katahdin ewes Reprint Icon - (Abstract Only)
Pinto Batista, L.F., Lewis, R.M., Rocha, A.O., Nilson, S.M., Murphy, T.W., Wilson, C.S., Freking, B.A., Burke, J.M., Brito, L.F. 2024. Heritability estimates for longevity-related traits in U.S. Katahdin ewes[abstract]. Journal of Animal Science Supplement. 102(Supplement 3):452-453. https://doi.org/10.1093/jas/skae234.511.
Survival analyses of the productive life in U.S. Katahdin ewes Reprint Icon - (Abstract Only)
Pinto Batista, L.F., Lewis, R.M., Rocha, A.O., Nilson, S.M., Murphy, T.W., Wilson, C.S., Freking, B.A., Burke, J.M., Brito, L.F. 2024. Survival analyses of the productive life in U.S. Katahdin ewes[abstract]. Journal of Animal Science. 102(Supplement 3):441-442. https://doi.org/10.1093/jas/skae234.500.
Assessment of genetic diversity and population structure of U.S. Polypay sheep from breed origins to future genomic selection Reprint Icon - (Peer Reviewed Journal)
Wilson, C.S., Petersen, J.L., Brito, L.F., Freking, B.A., Nilson, S.M., Taylor, J.B., Murphy Jr, T.W., Lewis, R.M. 2024. Assessment of genetic diversity and population structure of U.S. Polypay sheep from breed origins to future genomic selection. Frontiers in Genetics. Volume 15. https://doi.org/10.3389/fgene.2024.1436990.
Flashtags: Evaluating a novel deterrent to reduce livestock depredation - (Peer Reviewed Journal)
Sheep GEMS Update: Lambing assistance and udder health scores - (Popular Publication)
Lewis, R., Murphy, T., Freking, B., Burke, J. 2024. Sheep GEMS Update: Lambing assistance and udder health scores. Eastern Alliance for Production Katahdins Newsletter. Winter 2023 Newsletter. p. 10-11.
An extreme model of fertility in sheep demonstrates the basis of controversies surrounding antral follicle count and circulating concentrations of anti-Müllerian hormone as predictors of fertility in ruminants Reprint Icon - (Peer Reviewed Journal)
Cushman, R.A., Yake, H.K., Snider, A.P., Lents, C.A., Murphy, T.W., Freking, B.A. 2023. An extreme model of fertility in sheep demonstrates the basis of controversies surrounding antral follicle count and circulating concentrations of anti-Müllerian hormone as predictors of fertility in ruminants. Animal Reproduction Science. 259. Article 107364. https://doi.org/10.1016/j.anireprosci.2023.107364.
Characterization of Katahdin lamb carcasses in a traditional lamb marketing context Reprint Icon - (Abstract Only)
Phillips, M.K., Gifford, C., Murphy, T.W., Freking, B.A., Newman, C.E., Ritchie, C.R., Stewart, W.C. 2023. Characterization of Katahdin lamb carcasses in a traditional lamb marketing context [abstract]. Journal of Animal Science Supplement. 101(Supplement 3):658-659. https://doi.org/10.1093/jas/skad281.766.
A journey into sheep GEMS - (Popular Publication)
Lewis, R.M., Brito, L., Freking, B., Burke, J.M., Murphy, T., Taylor, J.B., Wilson, C.S., Nilson, S., Arisman, B., Oliveira Rocha, A., Yazar Gunes, H. 2023. A journey into sheep GEMS. Sheep Industry News. 27(8):24-26.
Is scrotal ultrasound a useful tool in ram breeding soundness examination? Reprint Icon - (Abstract Only)
Murphy, T.W., Freking, B.A., Wildeus, S., Miles, J.R., Cushman, R., Snider, A.P., Rempel, L.A. 2023. Is scrotal ultrasound a useful tool in ram breeding soundness examination? Journal of Animal Science. 101(Supplement 3):654. https://doi.org/10.1093/jas/skad281.761.
Comparison of three maternal composite sheep breeds managed under pasture lambing and purebred or terminal mating systems: Ewe body weight, reproductive efficiency, and longevity Reprint Icon - (Peer Reviewed Journal)
Murphy, T.W., Freking, B.A., Bennett, G.L. 2022. Comparison of three maternal composite sheep breeds managed under pasture lambing and purebred or terminal mating systems: Ewe body weight, reproductive efficiency, and longevity. Journal of Animal Science. 101. Article skac418. https://doi.org/10.1093/jas/skac418.
Impact of four ovine TMEM154 haplotypes on ewes during multiyear lentivirus exposure Reprint Icon - (Peer Reviewed Journal)
Freking, B.A., Murphy, T.W., Chitko-McKown, C.G., Workman, A.M., Heaton, M.P. 2022. Impact of four ovine TMEM154 haplotypes on ewes during multiyear lentivirus exposure. International Journal of Molecular Sciences. 23(23). Article 14966. https://doi.org/10.3390/ijms232314966.
Genetic reference flocks established at ARS stations - (Popular Publication)
Murphy, T.W., Freking, B., Burke, J., Taylor, J.B. 2022. Genetic reference flocks established at ARS stations. Sheep Industry News. 26(8):22-23.
Collaboration guides Sheep GEMS project - (Popular Publication)
Lewis, R., Boyer, T., Brito, L., Murphy, T.W., Freking, B.A., Burke, J.M., Taylor, J.B. 2022. Collaboration guides Sheep GEMS project. Sheep Industry News. 26(8):24-27.
Sperm characteristics of maternal composite rams before and after the breeding season - (Abstract Only)
Snider, A.P., Freking, B.A., Miles, J.R., Rempel, L.A., Crouse, M.S., Cushman, R.A., Wildeus, S., Murphy Jr, T.W. 2022. Sperm characteristics of maternal composite rams before and after the breeding season [abstract]. Society for the Study of Reproduction Annual Meeting, July 26-29, 2022, Spokane, Washington. Poster P233.
Are ovarian reserve parameters related to reproductive tract development and fertility in ewes? Reprint Icon - (Abstract Only)
Cushman, R.A., Yake, H.K., Snider, A.P., Murphy Jr, T.W., Freking, B.A. 2022. Are ovarian reserve parameters related to reproductive tract development and fertility in ewes [abstract]? Journal of Animal Science. 100(Supplement 2):85. https://doi.org/10.1093/jas/skac064.138.
Effect of TMEM154 E35K variant (haplotypes 1 and 3) on the incidence of ovine lentivirus infection and ewe productivity during lifetime exposure Reprint Icon - (Peer Reviewed Journal)
Murphy, T.W., Chitko-McKown, C.G., Heaton, M.P., Freking, B.A. 2021. Effect of TMEM154 E35K variant (haplotypes 1 and 3) on the incidence of ovine lentivirus infection and ewe productivity during lifetime exposure. Journal of Animal Science. 99(11). Article skab304. https://doi.org/10.1093/jas/skab304.
Localization of kisspeptin, NKB, and NK3R in the hypothalamus of gilts treated with the progestin altrenogest Reprint Icon - (Peer Reviewed Journal)
Lindo, A.N., Thorson, J., Bedenbaugh, M.N., Mccosh, R.B., Lopez, J.A., Young, S.A., Meadows, L.J., Bowdridge, E.C., Fergani, C., Freking, B.A., Lehman, M.N., Hileman, S.M., Lents, C.A. 2021. Localization of kisspeptin, NKB, and NK3R in the hypothalamus of gilts treated with the progestin altrenogest. Biology of Reproduction. Article 103. https://doi.org/10.1093/biolre/ioab103.
Evolution of the sheep industry and genetic research in the United States: Opportunities for convergence in the 21st century Reprint Icon - (Peer Reviewed Journal)
Thorne, J.W., Murdoch, B.M., Freking, B.A., Redden, R.R., Murphy Jr, T.W., Taylor, J.B., Blackburn, H.D. 2021. Evolution of the sheep industry and genetic research in the United States: Opportunities for convergence in the 21st century. Animal Genetics. 52(4):395-408. https://doi.org/10.1111/age.13067.
Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during fall lambing and body weight and longevity through six production years Reprint Icon - (Peer Reviewed Journal)
Murphy, T.W., Freking, B.A. 2021. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during fall lambing and body weight and longevity through six production years. Journal of Animal Science. 99(1):1-7. https://doi.org/10.1093/jas/skaa400.
Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during spring lambing under intensive and extensive production systems Reprint Icon - (Peer Reviewed Journal)
Freking, B.A., Murphy Jr, T.W. 2020. Comparison of performance of F1 Romanov crossbred ewes with wool and hair breeds during spring lambing under intensive and extensive production systems. Journal of Animal Science. 99(1):1-10. https://doi.org/10.1093/jas/skaa397.
Genetic and nongenetic factors influencing ewe prolificacy and lamb body weight in a closed Romanov flock Reprint Icon - (Peer Reviewed Journal)
Murphy Jr, T.W., Keele, J.W., Freking, B.A. 2020. Genetic and nongenetic factors influencing ewe prolificacy and lamb body weight in a closed Romanov flock. Journal of Animal Science. 98(9):1-8. https://doi.org/10.1093/jas/skaa283.
Development, selection criteria, and performance of Composite IV sheep at the U.S. Meat Animal Research Center Reprint Icon - (Proceedings)
Murphy, T., Freking, B., Bennett, G.L., Keele, J.W. 2020. Development, selection criteria, and performance of Composite IV sheep at the U.S. Meat Animal Research Center [abstract]. Journal of Animal Science. 98(Supplement 4):207. https://doi.org/10.1093/jas/skaa278.381.
Intrauterine position and adjacent fetal sex affects fetal and placental growth throughout gestation, but not embryonic viability, in pigs selected for component traits of litter size Reprint Icon - (Peer Reviewed Journal)
Lents, C.A., Freking, B.A. 2019. Intrauterine position and adjacent fetal sex affects fetal and placental growth throughout gestation, but not embryonic viability, in pigs selected for component traits of litter size. Animal Reproduction Science. 209:106139. https://doi.org/10.1016/j.anireprosci.2019.106139.
Rambouillet and Romanov reciprocal breed effects on survival and growth traits of F1 lambs and on reproductive traits of F1 ewes Reprint Icon - (Peer Reviewed Journal)
Freking, B.A., Bennett, G.L. 2019. Rambouillet and Romanov reciprocal breed effects on survival and growth traits of F1 lambs and on reproductive traits of F1 ewes. Journal of Animal Science. 97:578-586. https://doi.org/10.1093/jas/sky474.
Status of evaluation of three maternal lines under pasture lambing management conditions at USMARC - (Other)
Freking, B.A. 2018. Status of evaluation of three maternal lines under pasture lambing management conditions at USMARC. World Wide Web [online]. Available: http://dasnr.adobeconnect.com/ag_coffee_shop/.
Energy balance affects pulsatile secretion of luteinizing hormone from the adenohypophesis and expression of neurokinin B in the hypothalamus of ovariectomized gilts Reprint Icon - (Peer Reviewed Journal)
Thorson, J.F., Prezotto, L.D., Adams, H., Petersen, S.L., Clapper, J.A., Wright, E.C., Oliver, W.T., Freking, B.A., Foote, A.P., Berry, E.D., Nonneman, D.J., Lents, C.A. 2018. Energy balance affects pulsatile secretion of luteinizing hormone from the adenohypophesis and expression of neurokinin B in the hypothalamus of ovariectomized gilts. Biology of Reproduction. 99(2):433-445. https://doi.org/10.1093/biolre/ioy069.
Status of evaluation of three maternal lines under pasture lambing experiment at USMARC - (Other)
Freking, B.A. 2018. Status of evaluation of three maternal lines under pasture lambing experiment at USMARC [abstact]. American Sheep Industry 2018 Convention, San Antonio, TX, Jan. 31-Feb. 3, 2018. Available: http://www.sheepusa.org/Events_2018Convention.
Effects and interactions of myostatin and callipyge mutations: I. Growth and carcass traits Reprint Icon - (Peer Reviewed Journal)
Freking, B.A., King, D.A., Shackelford, S.D., Wheeler, T.L., Smith, T.P.L. 2018. Effects and interactions of myostatin and callipyge mutations: I. Growth and carcass traits. Journal of Animal Science. 96:454–461. https://doi.org/10.1093/jas/skx055.
Using sheep genomes from diverse U.S. breeds to identify missense variants in genes affecting fecundity Reprint Icon - (Peer Reviewed Journal)
Heaton, M.P., Smith, T.P.L., Freking, B.A., Workman, A.M., Bennett, G.L., Carnahan, J.K., Kalbfleisch, T.S. 2017. Using sheep genomes from diverse U.S. breeds to identify missense variants in genes affecting fecundity. F1000Research. 6:1303. https://doi.org/10.12688/f1000research.12216.1.
Glucosamine supplementation during late gestation alters placental development and increases litter size Reprint Icon - (Peer Reviewed Journal)
Vallet, J.L., Miles, J.R., Freking, B.A., Meyer, S. 2017. Glucosamine supplementation during late gestation alters placental development and increases litter size. JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY. 8:68. https://doi.org/10.1186/s40104-017-0198-9.
Relationship of neuropeptide FF receptors with pubertal maturation of gilts Reprint Icon - (Peer Reviewed Journal)
Thorson, J.F., Heidorn, N.L., Ryu, V., Czaja, K., Nonneman, D.J., Barb, C.R., Hausman, G.J., Rohrer, G.A., Prezotto, L.D., McCosh, R.B., Wright-Johnson, E.C., White, B.R., Freking, B.A., Oliver, W.T., Hileman, S.M., Lents, C.A. 2017. Relationship of neuropeptide FF receptors with pubertal maturation of gilts. Biology of Reproduction. 96(3):617-634. doi:10.1095/biolreprod.116.144998
Scan for allele frequency differences from pooled samples in lines of pigs selected for components of litter size - (Abstract Only)
Freking, B.A., Keele, J.W., Rohrer, G.A. 2016. Scan for allele frequency differences from pooled samples in lines of pigs selected for components of litter size [abstract]. Journal of Animal Science Supplement. 94 (E-Supplement 5):161 (Abstract # 0344).
Glucosamine supplementation affects placental development in swine - (Abstract Only)
Vallet, J., Miles, J., Freking, B., Meyer, S. 2016. Glucosamine supplementation affects placental development in swine [abstract]. Society for the Study of Reproduction Annual Meeting. Abstract # 287 (Scientific Program p. 181). Available: http://www.ssr.org/sites/ssr.org/files/uploads/attachments/node/320/2016_ssr_abstracts.pdf
Selection for uterine capacity improves lifetime productivity of sows Reprint Icon - (Peer Reviewed Journal)
Freking, B.A., Lents, C.A., Vallet, J.L. 2016. Selection for uterine capacity improves lifetime productivity of sows. Animal Reproduction Science. 167:16-21.
Plasma concentrations of acyl-ghrelin are associated with average daily gain and feeding behavior in grow-finish pigs Reprint Icon - (Peer Reviewed Journal)
Lents, C.A., Brown-Brandl, T.M., Rohrer, G.A., Oliver, W.T., Freking, B.A. 2016. Plasma concentrations of acyl-ghrelin are associated with average daily gain and feeding behavior in grow-finish pigs. Domestic Animal Endocrinology. 55:107-113.
Litter-of-origin trait effects on gilt development Reprint Icon - (Peer Reviewed Journal)
Vallet, J.L., Calderón-Díaz, J.A., Stalder, K.J., Phillips, C., Cushman, R.A., Miles, J.R., Rempel, L.A., Rohrer, G.A., Lents, C.A., Freking, B.A., Nonneman, D.J. 2016. Litter-of-origin trait effects on gilt development. Journal of Animal Science. 94(1):96-105.
Can we make the pig placenta work better? - (Abstract Only)
Vallet, J.L., McNeel, A.K., Calderon-Diaz, J.A., Stalder, K.J., Phillips, C.E., Rohrer, G.A., Miles, J.R., Freking, B.A. 2015. Can we make the pig placenta work better? [abstract]. Society for the Study of Reproduction Annual Meeting. pp. 40-41 (Abstract #107). Available: https://www.ssr.org/
Growth curve analysis of placental and fetal growth influenced by adjacent fetal sex status under crowded uterine conditions in pigs - (Abstract Only)
Freking, B.A., Lents, C.A. 2015. Growth curve analysis of placental and fetal growth influenced by adjacent fetal sex status under crowded uterine conditions in pigs [abstract]. Journal of Animal Science. 93 (Supplement s3):186 (Abstract #M507).
Age at puberty, ovulation rate, and uterine length of developing gilts fed two lysine and three metabolizable energy concentrations from 100 to 260 d of age Reprint Icon - (Peer Reviewed Journal)
Calderón Díaz, J.A., Vallet, J.L., Lents, C.A., Nonneman, D.J., Miles, J.R., Wright, E.C., Rempel, L.A., Cushman, R.A., Freking, B.A., Rohrer, G.A., Phillips, C., Dedecker, A., Foxcroft, G., Stalder, K.J. 2015. Age at puberty, ovulation rate, and uterine length of developing gilts fed two lysine and three metabolizable energy concentrations from 100 to 260 d of age. Journal of Animal Science. 93(7):3521-3527.
Age at puberty, ovulation rate, and reproductive tract traits of developing gilts fed two lysine levels and three metabolizable energy levels from 100 to 260 d of age - (Abstract Only)
Calderon Diaz, J.A., Vallet, J.L., Lents, C.A., Nonneman, D., Miles, J.R., Wright-Johnson, E.C., Rempel, L.A., Cushman, R.A., Freking, B.A., Rohrer, G.A., Phillips, C.E., DeDecker, A.E., Foxcroft, G., Stalder, K. 2015. Age at puberty, ovulation rate, and reproductive tract traits of developing gilts fed two lysine levels and three metabolizable energy levels from 100 to 260 d of age [abstract]. Journal of Animal Science. 93(Supplement 2):81 (Abstract #180).
Optimal dietary energy and protein for gilt development: Age at puberty, ovulation rate, and reproductive tract traits - (Research Technical Update)
Calderon Diaz, J.A., Vallet, J.L., Lents, C.A., Nonneman, D.J., Miles, J.R., Wright-Johnson, E.C., Rempel, L.A., Cushman, R.A., Freking, B.A., Rohrer, G.A., Phillips, C., Dedecker, A., Foxcroft, G., Stalder, K.J. 2015. Optimal dietary energy and protein for gilt development: Age at puberty, ovulation rate, and reproductive tract traits. Iowa State University Animal Industry Report. AS 661(ASL R3022). Available: https://lib.dr.iastate.edu/asn_air/vol661/iss1/85.
Contributions…uterine environment and piglet genotype on weaning survivability potential: II. Piglet growth, lactation performance, milk composition…blood profiles…lactation…reciprocal embryo transfers…Meishan and White…gilts Reprint Icon - (Peer Reviewed Journal)
Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Oliver, W.T., Rempel, L.A. 2015. Contributions of the maternal uterine environment and piglet genotype on weaning survivability potential: II. Piglet growth, lactation performance, milk composition, and piglet blood profiles during lactation following reciprocal embryo transfers between Meishan and White crossbred gilts. Journal of Animal Science. 93(4):1555-1564.
Effects of sire breed, gender, and postnatal litter size on plasma concentrations of acyl ghrelin and its relationship with growth traits and feeding behavior in swine - (Abstract Only)
Lents, C.A., Brown-Brandl, T.M., Rohrer, G.A., Oliver, W.T., Freking, B.A. 2015. Effects of sire breed, gender, and postnatal litter size on plasma concentrations of acyl ghrelin and its relationship with growth traits and feeding behavior in swine [abstract]. Journal of Animal Science. 93(Supplement 2):148 (Abstract #333).
Litter of origin effects on gilt development in a commercial setting - (Abstract Only)
Vallet, J.L., Calderon-Diaz, J.A., Stalder, K.J., Phillips, C.E., Miles, J.R., Wright-Johnson, E.C., Rempel, L.A., Lents, C.A., Nonneman, D., Rohrer, G.A., Freking, B.A., Cushman, R.A. 2015. Litter of origin effects on gilt development in a commercial setting [abstract]. Journal of Animal Science. 93(Supplement 2):79-80 (Abstract #177).
Placental accommodations for transport and metabolism during intra-uterine crowding in pigs Reprint Icon - (Review Article)
Vallet, J.L., McNeel, A.K., Miles, J.R., Freking, B.A. 2014. Placental accommodations for transport and metabolism during intra-uterine crowding in pigs. Journal of Animal Science and Biotechnology. 5(1):55.
Comparative genomics reveals tissue-specific regulation of prolactin receptor gene expression Reprint Icon - (Peer Reviewed Journal)
Schennink, A., Trott, J.F., Manjarin, R., Lemay, D.G., Freking, B.A., Hovey, R.C. 2015. Comparative genomics reveals tissue-specific regulation of prolactin receptor gene expression. Journal of Molecular Endocrinology. 54(1):1-15. DOI: 10.1530/JME-14-0212.
Optimal dietary energy and protein for the development of gilts - NPB #12-209 - (Research Technical Update)
Vallet, J., Calderon, J., Stalder, K., Phillips, C., Bradley, G., Miles, J., Rempel, L., Lents, C., Freking, B., Rohrer, G., Nonneman, D., Cushman, R. 2014. Optimal dietary energy and protein for the development of gilts - NPB #12-209. National Pork Board. Available: http://research.pork.org/FileLibrary/ResearchDocuments/12-209-Vallet-USDA.pdf.
Effects of parity and selection for uterine capacity on sow litter performance traits - (Abstract Only)
Freking, B.A., Vallet, J.L. 2014. Effects of parity and selection for uterine capacity on sow litter performance traits [abstract]. Journal of Animal Science. 92(E-Supplement 2):943 (Abstract #1943(M389)).
Effects of RFRP2 and RF9 on secretion of luteinizing hormone in prepubertal gilts - (Abstract Only)
Thorson, J.F., Prezotto, L.D., McCosh, R.B., Wright, E.C., Swanson, K.C., White, B.R., Freking, B.A., Oliver, W.T., Hileman, S.M., Lents, C.A. 2014. Effects of RFRP2 and RF9 on secretion of luteinizing hormone in prepubertal gilts [abstract]. In: Endocrine Society’s 96th Annual Meeting and Expo (ICE/ENDO 2014), June 21-24, 2014, Chicago, IL. Endocrine Reviews. 35(3 Supplement):SUN-0669.
Measures of the ovaries and uterus during development of gilts selected for differences in uterine capacity Reprint Icon - (Peer Reviewed Journal)
Lents, C.A., Cushman, R.A., Freking, B.A. 2014. Measures of the ovaries and uterus during development of gilts selected for differences in uterine capacity. Journal of Animal Science. 92(6):2433-2439.
Variation in the coding and 3’ untranslated regions of the porcine prolactin receptor short form modifies protein expression and function Reprint Icon - (Peer Reviewed Journal)
Trott, J.F., Freking, B.A., Hovey, R.C. 2014. Variation in the coding and 3’ untranslated regions of the porcine prolactin receptor short form modifies protein expression and function. Animal Genetics. 45(1):74-86.
A novel first exon directs hormone-sensitive transcription of the pig prolactin receptor - (Peer Reviewed Journal)
Schennink, A., Trott, J.F., Freking, B.A., Hovey, R.C. 2013. A novel first exon directs hormone-sensitive transcription of the pig prolactin receptor. Journal of Molecular Endocrinology. 51(1):1-13.
The relationship of plasma urea nitrogen with growth traits and age at first estrus in gilts - (Peer Reviewed Journal)
Lents, C.A., Rempel, L.A., Klindt, J., Wise, T., Nonneman, D., Freking, B.A. 2013. The relationship of plasma urea nitrogen with growth traits and age at first estrus in gilts. Journal of Animal Science. 91(7):3137-3142.
Abundance of total genomic 5-methylcytosine and 5-hydroxymethylcytosine in different pig tissues - (Abstract Only)
Freking, B.A., Nonneman, D.J. 2013. Abundance of total genomic 5-methylcytosine and 5-hydroxymethylcytosine in different pig tissues. Journal of Animal Science. 91 (E-Supplement 2):537 (Abstract #TH185).
Differences in X-chromosome transcriptional activity and cholesterol metabolism between placentae from swine breeds from asian and western origins - (Peer Reviewed Journal)
Bischoff, S.R., Tsai, S.Q., Hardison, N.E., Motsinger-Reif, A.A., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J.A. 2013. Differences in X-chromosome transcriptional activity and cholesterol metabolism between placentae from swine breeds from Asian and Western origins. PLoS One. 8(1):e55345.
Fetal liver glycogen production and glycogenic transcript expression during prenatal development from pig breeds differing in preweaning survivability - (Abstract Only)
Miles, J.R., Noel, J.A., Rempel, L.A., Vallet, J.L., Freking, B.A. 2013. Fetal liver glycogen production and glycogenic transcript expression during prenatal development from pig breeds differing in preweaning survivability [abstract]. Journal of Animal Science. 91 (Supplement 2):124 (Abstract #P105).
Boar sperm quality in lines of pigs selected for either ovulation rate or uterine capacity - (Peer Reviewed Journal)
Freking, B.A., Purdy, P.H., Spiller, S.F., Welsh, C.S., Blackburn, H.D. 2012. Boar sperm quality in lines of pigs selected for either ovulation rate or uterine capacity. Journal of Animal Science. 90(8):2515-2523.
Contributions of the maternal uterine environment and piglet genotype on weaning survivability potential: I. Development of neonatal piglets after reciprocal embryo transfers between Meishan and White crossbred gilts - (Peer Reviewed Journal)
Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Cushman, R.A., Oliver, W.T., Rempel, L.A. 2012. Contributions of the maternal uterine environment and piglet genotype on weaning survivability potential: I. Development of neonatal piglets after reciprocal embryo transfers between Meishan and White crossbred gilts. Journal of Animal Science. 90(7):2181-2192.
Ultrasound and phenotypic measures of the reproductive tract of prepubertal gilts selected for increased uterine capacity - (Abstract Only)
Lents, C.A., Cushman, R.A., Freking, B.A. 2012. Ultrasound and phenotypic measures of the reproductive tract of prepubertal gilts selected for increased uterine capacity [abstract]. Journal of Animal Science. 90 (Supplement 2):118 (Abstract #299P).
Association of porcine heparanase and hyaluronidase 1 and 2 with reproductive and production traits in a Landrace-Duroc-Yorkshire population - (Peer Reviewed Journal)
Rempel, L.A., Freking, B.A., Miles, J.R., Nonneman, D.J., Rohrer, G.A., Schneider, J.F., Vallet, J.L. 2011. Association of porcine heparanase and hyaluronidase 1 and 2 with reproductive and production traits in a Landrace-Duroc-Yorkshire population. Frontiers in Livestock Genomics. 2:20.
Intrauterine position and adjacent fetal sex status influences fetal and placental growth but not embryonic viability under crowded uterine conditions in pigs - (Abstract Only)
Freking, B.A., Lents, C.A. 2011. Intrauterine position and adjacent fetal sex status influences fetal and placental growth but not embryonic viability under crowded uterine conditions in pigs [abstract]. Journal of Animal Science. 89 (E-Supplement 1):88 (Abstract #M230).
Effect of empty uterine space on birth intervals and fetal and placental development in pigs - (Peer Reviewed Journal)
Vallet, J.L., Freking, B.A., Miles, J.R. 2011. Effect of empty uterine space on birth intervals and fetal and placental development in pigs. Animal Reproduction Sciences. 125:158-164.
Piglet growth and blood components during lactation following reciprocal embryo transfer between Meishan and White crossbred gilts - (Abstract Only)
Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Cushman, R.A., Oliver, W.T., Christenson, R.K. 2011. Piglet growth and blood components during lactation following reciprocal embryo transfer between Meishan and White crossbred gilts [abstract]. Reproduction, Fertility and Development. 23(1):177-178 (Abstract #148).
Ovine Reference Materials and Assays for Prion Genetic Testing - (Peer Reviewed Journal)
Heaton, M.P., Leymaster, K.A., Kalbfleisch, T.S., Freking, B.A., Smith, T.P., Clawson, M.L., Laegreid, W.W. 2010. Ovine Reference Materials and Assays for Prion Genetic Testing. BioMed Central (BMC) Veterinary Research [serial online]. 6:23. Available: http://www.biomedcentral.com/1746-6148/6/23.
Finishing Growth and Carcass Characteristics Following Reciprocal Embryo Transfer between Meishan and White Crossbred Pigs - (Abstract Only)
Miles, J.R., Vallet, J.L., Freking, B.A., Ford, J.J., Shackelford, S.D., Wheeler, T.L. 2010. Finishing Growth and Carcass Characteristics Following Reciprocal Embryo Transfer between Meishan and White Crossbred Pigs [abstract]. Journal of Animal Science. 88 (E-Supplement 2):355. (Abstract #T152).
Characterization of Conserved and Nonconserved Imprinted Genes in Swine - (Abstract Only)
Freking, B.A., Bischoff, S.R., Tsai, S., Hardison, N., Motsinger-Reif, A.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J.A. 2010. Characterization of Conserved and Nonconserved Imprinted Genes in Swine [abstract]. Plant and Animal Genome XVIII Conference. Abstract No. W024. Available: http://www.intl-pag.org/18/abstracts/W04_PAGXVIII_024.html
Ovine Reference Materials and Assays for Prion Genetic Testing - (Abstract Only)
Heaton, M.P., Leymaster, K.A., Kalbfleisch, T.S., Freking, B.A., Smith, T.P., Clawson, M.L., Laegreid, W.W. 2009. Ovine Reference Materials and Assays for Prion Genetic Testing [abstract]. Plant and Animal Genomes XVIII Conference. Abstract No. P577. Available: http://www.intl-pag.org/18/abstracts/
Characterization of Conserved and Non-conserved Imprinted Genes in Swine - (Peer Reviewed Journal)
Bischoff, S.R., Tsai, S., Hardison, N., Motsinger-Reif, A.A., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J.A. 2009. Characterization of Conserved and Non-conserved Imprinted Genes in Swine. Biology of Reproduction. 81(5):906-920.
Effect of Fetal Size on Fetal Placental Hyaluronan and Hyaluronoglucosaminidases Throughout Gestation in the Pig - (Peer Reviewed Journal)
Vallet, J.L., Miles, J.R., Freking, B.A. 2010. Effect of Fetal Size on Fetal Placental Hyaluronan and Hyaluronoglucosaminidases Throughout Gestation in the Pig. Animal Reproduction Science. 118(2-4):297-309.
Functional Genomic Approaches for the Study of Fetal/Placental Development in Swine with Special Emphasis on Imprinted Genes - (Review Article)
Bischoff, S.R., Tsai, S., Hardison, N., Motsinger-Reif, A.A., Freking, B.A., Piedrahita, J.A. 2009. Functional Genomic Approaches for the Study of Fetal/Placental Development in Swine with Special Emphasis on Imprinted Genes. In: Control of Pig Reproduction VIII (H. Rodriguez-Martinez, J.L. Vallet and A.J. Ziecik, eds.) Journal of Reproduction and Fertility Supplement. 66:245-264.
Molecular Cloning and Characterisation of Heparanase mRNA in Porcine Placenta Throughout Gestation - (Peer Reviewed Journal)
Miles, J.R., Vallet, J.L., Freking, B.A., Nonneman, D.J. 2009. Molecular Cloning and Characterisation of Heparanase mRNA in Porcine Placenta Throughout Gestation. Reproduction, Fertility and Development. 21(6):757-772.
Tissue-specific Regulation of Porcine Prolactin Receptor Expression by Estrogen, Progesterone and Prolactin - (Peer Reviewed Journal)
Trott, J.F., Horigan, K.C., Gloviczki, J.M., Costa, K.M., Freking, B.A., Farmer, C., Hayashi, K., Spencer, T., Morabito, J.E., Hovey, R.C. 2009. Tissue-specific Regulation of Porcine Prolactin Receptor Expression by Estrogen, Progesterone and Prolactin. Journal of Endocrinology. 202:153-166.
Development of the Pig Placenta - (Review Article)
Vallet, J.L., Miles, J.R., Freking, B.A. 2009. Development of the Pig Placenta. IN: Control of Pig Reproduction VIII (Rodriguez-Martinez, H., Vallet, J.L., Ziecik, A.J., eds.), Nottingham University Press. Proceedings of the Eighth International Conference on Pig Reproduction, May 31-June 4, 2009, The Banff Centre, Banff, Alberta, Canada. Society of Reproduction and Fertility Supplement. 66:265-279.
Development of Neonatal Piglets Following Reciprocal Embryo Transfers Between Meishan and White Crossbred Gilts - (Abstract Only)
Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Cushman, R.A., Oliver, W.T., Christenson, R.K. 2009. Development of Neonatal Piglets Following Reciprocal Embryo Transfers Between Meishan and White Crossbred Gilts [abstract]. Proceedings of VIIIth International Conference on Pig Reproduction, Banff, Alberta, Canada, p. 148.
Impact of Selection for Uterine Capacity on the Placental Transcriptome - (Abstract Only)
Freking, B.A., Miles, J.R., Bischoff, S.R., Tsai, S., Hardison, N., Xia, Y., Nonneman, D.J., Vallet, J.L., Piedrahita, J.A. 2009. Impact of Selection for Uterine Capacity on the Placental Transcriptome [Abstract]. In: Control of Pig Reproduction VIII (H. Rodriguez-Martinez, J.L. Vallet and A.J. Ziecik, eds.) Journal of Reproduction and Fertility Supplement. 66:207-208.
Extreme muscle development in sheep heterozygous for both myostatin and callipyge mutations - (Abstract Only)
Smith, T.P., Freking, B.A., Shackelford, S.D., King, D.A., Wheeler, T.L., Leymaster, K.A. 2009. Extreme muscle development in sheep heterozygous for both myostatin and callipyge mutations. Plant and Animal Genome Conference Proceedings. Jan. 10-14, 2009. San Diego, CA. Abstract W084.
Conceptus development during blastocyst elongation in lines of pigs selected for increased uterine capacity or ovulation rate - (Peer Reviewed Journal)
Miles, J.R., Freking, B.A., Blomberg, L., Vallet, J.L., Zuelke, K.A. 2008. Conceptus development during blastocyst elongation in lines of pigs selected for increased uterine capacity or ovulation rate. Journal of Animal Science. 86(9):2126-2134.
Identification of SNPs and INDELS in swine transcribed sequences using short oligonucleotide microarrays - (Peer Reviewed Journal)
Bischoff, S.R., Tsai, S., Hardison, N.E., York, A.M., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J.A. 2008. Identification of SNPs and INDELS in swine transcribed sequences using short oligonucleotide microarrays. Biomed Central (BMC) Genomics 9:252.
Boar fertility and semen quality characteristics in lines of pigs selected for component traits of female reproduction - (Abstract Only)
Freking, B.A., Purdy, P.H., Welsh, C.S., Spiller, S.F., Blackburn, H.D. 2008. Boar fertility and semen quality characteristics in lines of pigs selected for component traits of female reproduction [abstract]. Journal of Animal Science Supplement. 86(E-Suppl. 2):208-209. Abstract #W50.
Placental hyaluronidase expression during gestation in swine - (Abstract Only)
Vallet, J., Miles, J., Freking, B. 2008. Placental hyaluronidase expression during gestation in swine [abstract]. Biology of Reproduction. Special Issue:217-218 (Abstract #694).
Molecular cloning and characterization of heparanase mRNA in porcine placenta throughout gestation - (Abstract Only)
Miles, J., Vallet, J., Freking, B. 2008. Molecular cloning and characterization of heparanase mRNA in porcine placenta throughout gestation [abstract]. Biology of Reproduction. Special Issue:125-126 (Abstract #305).
Development of cell lines from the sheep used to construct the CHORI-243 ovine BAC library - (Peer Reviewed Journal)
Chitko Mckown, C.G., Leonard, J.C., Moscatello, D., Miller, L.C., Freking, B.A. 2008. Development of cell lines from the sheep used to construct the CHORI-243 ovine BAC library. Animal Biotechnology. 19(2):84-88.
Placental transcriptome profile differences associated with selection for uterine capacity - (Abstract Only)
Freking, B.A., Miles, J.R., Bischoff, S.R., Xia, Y., Nonneman, D.J., Vallet, J.L., Piedrahita, J.A. 2008. Placental transcriptome profile differences associated with selection for uterine capacity [abstract]. Journal of Animal Science. 86(E-Suppl. 3):49. Abstract #36.
Evidence of Allelic Suppression for Transcripts Expressed in Day 30 Pig Embryos by SNP Genotyping - (Abstract Only)
Freking, B.A., Nonneman, D.J., Rohrer, G.A., Bischoff, S.R., Tsai, S., Piedrahita, J.A. 2008. Evidence of allelic suppression for transcripts expressed in day 30 pig embryos by SNP genotyping [abstract]. Journal of Animal Science. 86(E-Suppl. 3):51. Abstract #44.
Conceptus development during embryo elongation in lines of pigs selected for ovulation rate or uterine capacity - (Abstract Only)
Miles, J.R., Freking, B.A., Blomberg, L., Vallet, J.L. 2008. Conceptus development during embryo elongation in lines of pigs selected for ovulation rate or uterine capacity [abstract]. Journal of Animal Science. 86 (E-Supplement 3):107 (Abstract #233).
Integrating the USMARC genetic map for the pig with the pig physical map - (Abstract Only)
Wiedmann, R.T., Freking, B.A., Nonneman, D.J., Snelling, W.M., Keele, J.W., Harhay, G.P., Rohrer, G.A. Integrating the USMARC genetic map for the pig with the pig physical map. 2008. Annual International Plant & Animal Genome Conference. Poster No. P565, pg 259.
Differences in placental structure during gestation associated with large and small pig fetuses - (Peer Reviewed Journal)
Vallet, J.L., Freking, B.A. 2007. Differences in placental structure during gestation associated with large and small pig fetuses. Journal of Animal Science. 85(12):3267-3275.
Number of Fetuses and Conceptus Growth Throughout Gestation in Lines of Pigs Selected for Either Ovulation Rate or Uterine Capacity - (Peer Reviewed Journal)
Freking, B.A., Leymaster, K.A., Vallet, J.L., Christenson, R. 2007. Number of fetuses and conceptus growth throughout gestation in lines of pigs selected for either ovulation rate or uterine capacity. Journal of Animal Science. 85(9):2093-2103.
Single Nucleotide Polymorphisms for Pig Identification and Parentage Exclusion - (Peer Reviewed Journal)
Rohrer, G.A., Freking, B.A., Nonneman, D.J. 2007. Single nucleotide polymorphisms for pig identification and parentage exclusion. Animal Genetics. 38:253-258.
Detection of transcriptional difference of porcine imprinted genes using different microarray platforms - (Peer Reviewed Journal)
Tsai, S., Mir, B., Martin, A.C., Estrada, J.L., Bischoff, S.R., Hsieh, W., Cassady, J.P., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J. 2006. Detection of transcriptional difference of porcine imprinted genes using different microarray platforms. (BMC) Genomics. 7:328.
Factors affecting litter size in pigs - (Proceedings)
Vallet, J.L., Freking, B.A., Miles, J.R., Nienaber, J.A., Brown Brandl, T.M. 2006. Factors affecting litter size in pigs. Proceedings National Swine Improvement Federation (NSIF) Conference and Annual Meeting (7-8 Dec 2006; Nashville, TN). NSIF Vol. 31:15-21.
A marker set for parentage-based DNA traceback in beef and dairy cattle - (Abstract Only)
Heaton, M.P., Snelling, W.M., Smith, T.P., Keele, J.W., Harhay, G.P., Wiedmann, R.T., Bennett, G.L., Freking, B.A., Van Tassell, C.P., Sonstegard, T.S., Gasbarre, L.C., Moore, S.S., Murdoch, B., Mckay, S.D., Kalbfleisch, T., Laegreid, W.W. 2007. A marker set for parentage-based DNA traceback in beef and dairy cattle [abstract]. Plant and Animal Genome XV Conference. Poster No. P516.
An updated USMARC genetic map for the pig integrated with the pig physical map - (Abstract Only)
Rohrer, G.A., Snelling, W.M., Freking, B.A., Nonneman, D.J., Harhay, G.P., Keele, J.W. 2007. An updated USMARC genetic map for the pig integrated with the pig physical map [abstract]. Plant and Animal Genome XV Conference. Poster No. W421.
A LINEAR MIXED MODEL APPROACH TO IDENTIFYING EXPRESSED SINGLE FEATURE POLYMORPHISMS - (Abstract Only)
Bischoff, S.R., Tsai, S., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J.A. 2006. A linear mixed model approach to identifying expressed single feature polymorphisms [abstract]. International Mammalian Genome Society (IMGS) Annual Meeting, Charleston, SC, November, 2006. Abstract #P12.
CHANGES IN FETAL ORGAN WEIGHTS DURING GESTATION AFTER SELECTION FOR OVULATION RATE AND UTERINE CAPACITY IN SWINE - (Peer Reviewed Journal)
Vallet, J.L., Freking, B.A. 2006. Changes in fetal organ weights during gestation after selection for ovulation rate and uterine capacity in swine. Journal of Animal Science. 84(9):2338-2345.
COMPARISON OF PLACENTAL MICROSCOPIC FOLD DEVELOPMENT BETWEEN LARGE AND SMALL FETUSES THROUGHOUT GESTATION IN SWINE - (Abstract Only)
Vallet, J.L., Freking, B.A. 2006. Comparison of placental microscopic fold development between large and small fetuses throughout gestation in swine [abstract]. Biology of Reproduction. (Supplement):163. (Abstract #409)
ANNOTATION OF THE AFFYMETRIX PORCINE GENOME MICROARRAY - (Peer Reviewed Journal)
Tsai, S., Cassady, J.P., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J.A. 2006. Annotation of the affymetrix porcine genome microarray. Animal Genetics. 37:423-424.
AN ERYTHROPOIETIN RECEPTOR (EPOR) GENE POLYMORPHISM (SNP) ALTERS EPOR MRNA IN FETAL LIVER OF SWINE DURING EARLY GESTATION - (Abstract Only)
Vallet, J.L., Freking, B.A. 2006. An erythropoietin receptor (EPOR) gene polymorphism (SNP) alters EPOR mRNA in fetal liver of swine during early gestation [abstract]. Journal of Animal Science. 84 (Supplement 1):450. (Abstract #634)
ANNOTATION OF AFFYMETRIX PORCINE GENOME MICROARRAY CHIP - (Abstract Only)
Tsai, S., Weir, B., Cassady, J., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J. 2006. Annotation of affymetrix porcine genome microarray chip. Plant and Animal Genome Conference Proceedings. Poster #P768. p. 292.
CALLIPYGE MUTATION AFFECTS GENE EXPRESSION IN CIS: A POTENTIAL ROLE FOR CHROMATIN STRUCTURE - (Peer Reviewed Journal)
Murphy, S.K., Nolan, C.M., Huang, Z., Kucera, K.S., Freking, B.A., Smith, T.P.L., Leymaster, K.A., Weidman, J.R., Jirtle, R.L. 2006. Callipyge mutation affects gene expression in cis: A potential role for chromatin structure. Genome Research. 16:340-346.
WHAT WE HAVE LEARNED ABOUT PRENATAL PHYSIOLOGY IN THE PIG FROM UTERINE CROWDING EXPERIMENTS - (Abstract Only)
Vallet, J., Freking, B., Kayser, J.P., Christenson, R., Leymaster, K. 2006. What we have learned about prenatal physiology in the pig from uterine crowding experiments [abstract]. Journal of Animal Science. 84 (Supplement 2):71-72. (Abstract #95)
MICROARRAY PLATFORM COMPARISON FOR PORCINE GENE EXPRESSION STUDIES - (Abstract Only)
Tsai, S., Mir, B., Martin, A., Estrada, J., Bischoff, S., Cassady, J., Weir, B., Freking, B.A., Nonneman, D.J., Rohrer, G.A., Piedrahita, J. 2006. Microarray platform comparison for porcine gene expression studies. Plant and Animal Genome Conference Proceedings. Poster #W241. p. 61.
USE OF PORCINE PARTHENOTES AND GENE EXPRESSION PROFILING USING MICROARRAYS FOR IDENTIFICATION OF IMPRINTED GENES - (Abstract Only)
Piedrahita, J.A., Bischoff, S.R., Estrada, J.L., Freking, B.A., Nonneman, D.J., Martin, A.C., Mir, B., Rohrer, G.A., Tsai, S. 2006. Use of porcine parthenotes and gene expression profiling using microarrays for identification of imprinted genes [abstract]. Proceedings of the 32nd International Conference of the International Embryo Transfer Society (IETS), January 8-10, 2006, Orlando, FL. Page 239.
EVALUATION OF ASSOCIATIONS BETWEEN PRION HAPLOTYPES AND GROWTH, CARCASS, AND MEAT QUALITY TRAITS IN A DORSET X ROMANOV SHEEP POPULATION - (Peer Reviewed Journal)
Isler, B.J., Freking, B.A., Thallman, R.M., Heaton, M.P., Leymaster, K.A. 2006. Evaluation of associations between prion haplotypes and growth, carcass, and meat quality traits in a Dorset x Romanov sheep population. Journal of Animal Science. 84:783-788.
A FREELY-AVAILABLE SET OF REFERENCE DNAS FOR GENOTYPING THE MAJOR SCRAPIE SUSCEPTIBILITY ALLELES IN SHEEP - (Abstract Only)
Heaton, M.P., Leymaster, K.A., Clawson, M.L., Freking, B.A., Laegreid, W.W. 2006. A freely-available set of reference DNAs for genotyping the major scrapie susceptibility alleles in sheep [abstract]. Plant and Animal Genome Conference Proceedings. p. 239.
EVALUATION OF THE OVINE CALLIPYGE LOCUS: IV. GENOTYPIC EFFECTS ON REPRODUCTIVE TRAITS - (Peer Reviewed Journal)
Freking, B.A., Leymaster, K.A. 2006. Evaluation of the ovine callipyge locus: IV. Genotypic effects on reproductive traits. Journal of Animal Science. 84:311-316.
LINES OF PIGS SELECTED FOR COMPONENT TRAITS OF LITTER SIZE EXHIBIT DIFFERENTIAL GENE REGULATION AT THE ONSET OF EMBRYO (TROPHOECTODERM) ELONGATION - (Abstract Only)
Miles, J.R., Blomberg, L., Freking, B.A., Zuelke, K.A. 2006. Lines of pigs selected for component traits of litter size exhibit differential gene regulation at the onset of embryo (trophoectoderm) elongation [abstract]. International Embryo Transfer Society Annual Meeting. 18:235-236.
ASSIGNMENT OF 12 GENES TO PORCINE CHROMOSOME 1Q BY LINKAGE AND RADIATION HYBRID MAPPING - (Peer Reviewed Journal)
Nonneman, D.J., Smith, T.P., Freking, B.A., Rohrer, G.A. 2005. Assignment of 12 genes to porcine chromosome 1q by linkage and radiation hybrid mapping. Anim. Genet. 36:532-533. 2005.
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: V. REPRODUCTION OF F1 EWES IN SPRING MATING SEASONS - (Peer Reviewed Journal)
Casas, E., Freking, B.A., Leymaster, K.A. 2005. Evaluation of Dorset, Finnsheep, Romanov, Texel, and Montadale breeds of sheep: V. Reproduction of F1 ewes in spring mating seasons. Journal of Animal Science. 83:2743-2751.
EXPERIMENTAL RESULTS TO TAKE TO THE BANK - (Popular Publication)
Leymaster, K.A., Freking, B.A., Casas, E. 2005. Experimental results to take to the bank. The Shepherd. 50(9):11-14.
PIG LINES GENETICALLY SELECTED FOR COMPONENT TRAITS OF LITTER SIZE EXHIBIT DIFFERENTIAL GENE REGULATION AT THE ONSET OF EMBRYO (TROPHECTODERM) ELONGATION - (Abstract Only)
This is a poster presentation for BARC Poster Day on 5/12/2005.
ALLELIC VARIATION IN THE SECRETED FOLATE BINDING PROTEIN GENE IS ASSOCIATED WITH UTERINE CAPACITY IN SWINE - (Peer Reviewed Journal)
Vallet, J.L., Freking, B.A., Leymaster, K.A., Christenson, R. 2005. Allelic variation in the secreted folate binding protein gene is associated with uterine capacity in swine. Journal of Animal Science. 83(8):1860-1867.
EFFECT OF SELECTION FOR OVULATION RATE AND UTERINE CAPACITY ON FETAL BRAIN, HEART, LIVER AND SPLEEN WEIGHTS THROUGHOUT GESTATION - (Abstract Only)
Vallet, J.L., Freking, B.A. 2005. Effect of selection for ovulation rate and uterine capacity on fetal brain, heart, liver and spleen weights throughout gestation [abstract]. Seventh International Conference on Pig Reproduction (June 12-15, 2005; Congress Center 'Rolduc', Kerkrade, The Netherlands). p. 108.
ALLELIC VARIATION IN THE ERYTHROPOIETIN RECEPTOR GENE IS ASSOCIATED WITH UTERINE CAPACITY AND LITTER SIZE IN SWINE - (Peer Reviewed Journal)
Vallet, J.L., Freking, B.A., Leymaster, K.A., Christenson, R.K. 2005. Allelic variation in the erythropoietin receptor gene is associated with uterine capacity and litter size in swine. Animal Genetics. 36(2):97-103.
ABNORMAL POSTNATAL MAINTENANCE OF ELEVATED PRENATAL DLK1 LEVELS IN CALLIPYGE SHEEP - (Peer Reviewed Journal)
Murphy, S.K., Freking, B.A., Smith, T.P., Nolan, C.M., Wylie, A.A., Evans, H.K., Jirtle, R.L. 2005. Abnormal postnatal maintenance of elevated prenatal DLK1 levels in callipyge sheep. Mammalian Genome. 16:171-183.
A 12 BP INSERTION/DELETION (IN/DEL) POLYMORPHISM IN THE SECRETED FOLATE BINDING PROTEIN (SFBP) GENE IS ASSOCIATED WITH UTERINE CAPACITY AND OVULATION RATE IN SWINE - (Abstract Only)
Vallet, J.L., Freking, B.A., Leymaster, K.A., Christenson, R.K. 2005. A 12 bp insertion/deletion (in/del) polymorphism in the secreted folate binding protein (sFBP) gene is associated with uterine capacity and ovulation rate in swine [abstract]. Journal of Animal Science. 83 (Supplement 2):87.
SINGLE NUCLEOTIDE POLYMORPHISMS FOR PIG IDENTIFICATION AND PARENTAGE EXCLUSION - (Abstract Only)
Rohrer, G.A., Freking, B.A., Nonneman, D.J. 2005. Single nucleotide polymorphisms for pig identification and parentage exclusion. Proc., Plant & Animal Genome XIII, San Diego, CA. P203. p. 125.
EFFECTS OF PRION HAPLOTYPE ON GROWTH AND CARCASS TRAITS IN SHEEP - (Peer Reviewed Journal)
Isler, B.J., Freking, B.A., Heaton, M.P., Thallman, R.M., Leymaster, K.A. 2005. Effects of prion haplotype on growth and carcass traits in sheep [abstract]. Midwestern Section of the American Society of Animal Science. 83(Suppl. 2):44-45
PRENATAL MORTALITY THROUGHOUT GESTATION IN LINES OF PIGS SELECTED FOR EITHER OVULATION RATE OR UTERINE CAPACITY - (Abstract Only)
Freking, B.A., Leymaster, K.A., Christenson, R., Vallet, J.L. 2005. Prenatal mortality throughout gestation in lines of pigs selected for either ovulation rate or uterine capacity [abstract]. Midwestern Section of the American Society of Animal Science. 83(Suppl. 2):41. Paper No. 28.
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: IV. SURVIVAL, GROWTH, AND CARCASS TRAITS OF F1 LAMBS - (Peer Reviewed Journal)
Freking, B.A., Leymaster, K.A. 2004. Evaluation of Dorset, Finnsheep, Romanov, Texel, and Montadale breeds of sheep: IV. Survival, growth, and carcass traits of F1 lambs. Journal of Animal Science. 82:3144-3153.
MEAT QUALITY AND THE CALLIPYGE GENE, CONSUMER ACCEPTANCE AND FINAL PRODUCT - (Proceedings)
Freking, B.A., Smith, T.P., Leymaster, K.A. 2004. Meat quality and the callipyge gene, consumer acceptance and final product. In: Proceedings of the 7th World Sheep and Wool Congress 2004, July 17-24, 2004, Quebec, Canada. p. 92-102.
FURTHER EVIDENCE FOR AN ASSOCIATION BETWEEN A POLYMORPHISM IN THE ERYTHROPOIETIN RECEPTOR (EPOR) GENE AND LITTER SIZE IN PIGS - (Abstract Only)
Vallet, J.L., Freking, B.A. 2004. Further evidence for an association between a polymorphism in the erythropoietin receptor (EPOR) gene and litter size in pigs [abstract]. Biology of Reproduction. 70 (Supplement):152. (Abstract #259)
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL AND MONTADALE BREEDS OF SHEEP: III. WOOL CHARACTERISTICS OF F1 EWES - (Peer Reviewed Journal)
Lupton, C.J., Freking, B.A., Leymaster, K.A. 2004. Evaluation of Dorset, Finnsheep, Romanov, Texel and Montadale breeds of sheep: III. Wool characteristics of F1 ewes. Journal of Animal Science. 82:2293-2300.
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: REPRODUCTION OF F1 EWES IN SPRING MATING SEASONS - (Abstract Only)
Leymaster, K.A., Casas, E., Freking, B.A. 2004. Evaluation of Dorset, Finnsheep, Romanov, Texel, and Montadale breeds of sheep: Reproduction of F1 ewes in spring mating seasons. [abstract] Journal of Animal Science Supplement. 82(Suppl. 1):390. Paper No. 647.
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: II. REPRODUCTION OF F1 EWES IN FALL MATING SEASONS - (Peer Reviewed Journal)
Casas, E., Freking, B.A., Leymaster, K.A. 2004. Evaluation of Dorset, Finnsheep, Romanov, Texel, and Montadale breeds of sheep: II. Reproduction of F1 ewes in fall mating seasons. Journal Of Animal Science. 82:1280-1289.
PRION GENE SEQUENCE VARIATION WITHIN DIVERSE GROUPS OF U.S. SHEEP, BEEF CATTLE, AND DEER - (Abstract Only)
HEATON, M.P., LEYMASTER, K.A., FREKING, B.A., HAWK, D.A., KEELE, J.W., LAEGREID, W.W. PRION GENE SEQUENCE VARIATION WITHIN DIVERSE GROUPS OF U.S. SHEEP, BEEF CATTLE, AND DEER. PLANT AND ANIMAL GENOME CONFERENCE PROCEEDINGS. 2004. ABSTRACT NO. P311.
ACCURATE DETERMINATION OF PRNP HAPLOTYPES IN U.S. SHEEP - (Abstract Only)
HEATON, M.P., LEYMASTER, K.A., FREKING, B.A., LAEGREID, W.W. ACCURATE DETERMINATION OF PRNP HAPLOTYPES IN U.S. SHEEP. PLANT AND ANIMAL GENOME CONFERENCE PROCEEDINGS. 2004. ABSTRACT NO. P312.
THE CALLIPYGE MUTATION FOR SHEEP MUSCULAR HYPERTROPHY - GENETICS, PHYSIOLOGY AND MEAT QUALITY - (Other)
Freking, B.A., Smith, T.P., Leymaster, K.A. 2004. The callipyge mutation for sheep muscular hypertrophy - genetics, physiology and meat quality. In: M.F.W. te Pas, M.E. Everts and H.P. Haagsman, editors. Muscle Development in Livestock. CAB International, United Kingdom. Chapter 15. p. 317-342.
DEVELOPMENT OF ANIMAL CELL LINES FOR USE IN GENOMIC STUDIES - (Abstract Only)
CHITKO MCKOWN, C.G., FREKING, B.A., MACNEIL, M.D., SMITH, T.P. DEVELOPMENT OF ANIMAL CELL LINES FOR USE IN GENOMIC STUDIES. RESEARCH WORKERS IN ANIMAL DISEASES CONFERENCE PROCEEDINGS. 2003. ABSTRACT NO. 90P.
DEVELOPMENT OF AN EST-DERIVED SNP-BASED LINKAGE MAP IN PIGS - (Proceedings)
FREKING, B.A. DEVELOPMENT OF AN EST-DERIVED SNP-BASED LINKAGE MAP IN PIGS. 3rd ANIMAL GENOMICS SYMPOSIUM NORTH CAROLINA STATE UNIVERSITY RALEIGH. 2003. P. 19.
PRION GENE SEQUENCE VARIATION WITHIN DIVERSE GROUPS OF U.S. SHEEP, BEEF CATTLE, AND DEER - (Peer Reviewed Journal)
HEATON, M.P., LEYMASTER, K.A., FREKING, B.A., HAWK, D.A., SMITH, T.P., KEELE, J.W., SNELLING, W.M., FOX, J.M., CHITKO MCKOWN, C.G., LAEGREID, W.W. PRION GENE SEQUENCE VARIATION WITHIN DIVERSE GROUPS OF U.S. SHEEP, BEEF CATTLE, AND DEER. MAMMALIAN GENOME. 2003. V. 14. P. 765-777.
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: PRODUCTIVITY OF F1 EWES IN FALL BREEDING SEASONS - (Proceedings)
CASAS, E., FREKING, B.A., LEYMASTER, K.A. EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: PRODUCTIVITY OF F1 EWES IN FALL BREEDING SEASONS. JOURNAL OF ANIMAL SCIENCE SUPPLEMENT. Vol. 81(Suppl. 1):67. 2003.
PRODUCTION OF A PORCINE-HUMAN COMPARATIVE MAP BASED ON THE PORCINE GENETIC MAP AND HUMAN GENOME SEQUENCE - (Proceedings)
Rohrer, G.A., Nonneman, D.J., Freking, B.A., Harhay, G.P., Snelling, W.M., Keele, J.W. 2002. Production of a porcine-human comparative map based on the porcine genetic map and human genome sequence. Plant and Animal Genome Conference Proceedings. Abstract P612.
A POLYMORPHISM IN THE PIG ERYTHROPOIETIN RECEPTOR (EPOR) GENE IS ASSOCIATED WITH UTERINE CAPACITY - (Abstract Only)
Vallet, J.L., Freking, B.A., Leymaster, K.A., Christenson, R.K. 2003. A polymorphism in the pig erythropoietin receptor (EPOR) gene is associated with uterine capacity [abstract]. Journal of Animal Science 81(Supplement 2):61.
DEVELOPMENT OF AN EST-DERIVED SNP-BASED LINKAGE MAP IN SWINE - (Proceedings)
Nonneman, D.J., Keele, J.W., Freking, B.A., Rohrer, G.A. Proceeding of the Plant & Animal Genome XI, 1/11-15/2003, San Diego, CA. p. 231.
REGULATION OF TESTICULAR SIZE IN PIGS: COMPARATIVE GENOMICS APPROACH - (Proceedings)
MCCOARD, S.A., WISE, T.H., FAHRENKRUG, S.C., ALEXANDER, L.J., FREKING, B.A., ROHRER, G.A., LUNSTRA, D.D., FORD, J.J. REGULATION OF TESTICULAR SIZE IN PIGS: COMPARATIVE GENOMICS APPROACH. PROCEEDINGS OF 8TH INTERNATIONAL PACIFIC RIM BIOTECHNOLOGY CONFERENCE. 2002. P. 56. AUCKLAND, NEW ZEALAND.
IDENTIFICATION OF THE SINGLE BASE CHANGE CAUSING THE CALLIPYGE MUSCLE HYPERTROPHY PHENOTYPE, THE ONLY KNOWN EXAMPLE OF POLAR OVERDOMINANCE IN MAMMALS. - (Peer Reviewed Journal)
Freking, B.A., Murphy, S., Wylie, A., Jirtle, R.L., Rhodes, S., Keele, J.W., Leymaster, K.A., Smith, T.P. 2002. Identification of the single base change causing the callipyge muscle hypertrophy phenotype, the only known example of polar overdominance in animals. Genome Research. 12:1496-1506.
PLACENTAL WEIGHTS ARE GREATER IN GILTS HOMOZYGOUS FOR A SECRETED FOLATE BINDING PROTEIN (SFBP) GENE POLYMORPHISM - (Abstract Only)
Vallet, J.L., Christenson, R.K., Freking, B.A. 2002. Placental weights are greater in gilts homozygous for a secreted folate binding protein (sFBP) gene polymorphism [abstract]. Journal of Animal Science. 80(Supplement 1):300-301. (Abstract No. 1202)
PORCINE GENE-DISCOVERY BY NORMALIZED CDNA-LIBRARY SEQUENCING AND EST CLUSTER ASSEMBLY - (Peer Reviewed Journal)
FAHRENKRUG, S.C., SMITH, T.P., FREKING, B.A., CHO, J., WHITE, J., VALLET, J.L., WISE, T.H., ROHRER, G.A., KEELE, J.W. PORCINE GENE-DISCOVERY BY NORMALIZED CDNA-LIBRARY SEQUENCING AND EST CLUSTER ASSEMBLY. MAMMALIAN GENOME. 2002. v. 13. p. 475-478.
GENETIC MAPPING PORCINE EST SEQUENCES USING LENGTH POLYMORPHISMS - (Proceedings)
Rohrer, G.A., Freking, B.A., Nonneman, D.J. 2002. Genetic mapping porcine EST sequences using length polymorphisms. 28th Animal Genetics International Conference Proceedings. Abstract D115. p. 121-122.
SINGLE NUCLEOTIDE POLYMORPHISM (SNP) DISCOVERY IN PORCINE EXPRESSED GENES - (Peer Reviewed Journal)
Fahrenkrug, S.C., Freking, B.A., Smith, T.P., Rohrer, G.A., Keele, J.W. 2002. Single nucleotide polymorphism (SNP) discovery in porcine expressed genes. Animal Genetics. 33:186-195.
AN INTEGRATED COMPARATIVE MAP OF THE PORCINE X CHROMOSOME - (Peer Reviewed Journal)
Mccoard, S.A., Fahrenkrug, S.C., Alexander, L.J., Freking, B.A., Rohrer, G.A., Wise, T.H., Ford, J.J. 2002. An integrated comparative map of the porcine X chromosome. Animal Genetics. 33(3):178-185.
IDENTIFICATION OF AN SNP ASSOCIATED WITH CALLIPYGE IN SHEEP - (Abstract Only)
IDENTIFICATION OF GENES WITHIN THE 500-KB DELETION ENCOMPASSING THE HIGH GROWTH (HG) MUTATION IN MICE - (Abstract Only)
Motaln, H., Freking, B.A., Medrano, J.F., Horvat, S. 2001. Transcript mapping of the 500-kb high growth (hg) region in mice [abstract]. The 15th International Mouse Genome Conference, Bled, Slovenia. P. 39, Poster #169.
COMPARATIVE MAPPING OF BTA15 AND HSA11 INCLUDING A REGION CONTAINING A QTL FOR MEAT TENDERNESS - (Peer Reviewed Journal)
COMPARATIVE MAPPING OF THE PORCINE X CHROMOSOME - (Abstract Only)
McCoard, S.A., Fahrenkrug, S.C., Freking, B.A., Rohrer, G.A., Wise, T.H., Ford, J.J. 2001. Comparative mapping of the porcine x chromosome [abstract]. Journal of Animal Science. 79 (Supplement 2):36. (Abstract #23)
SEQUENCE EVALUATION OF FOUR POOLED-TISSUE NORMALIZED BOVINE CDNA LIBRARIES AND CONSTRUCTION OF A GENE INDEX FOR CATTLE - (Peer Reviewed Journal)
MAPPING EXPRESSED SEQUENCE TAGS (ESTS) IN PIGS USING SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) - (Abstract Only)
CONSTRUCTION OF SNP-BASED EST COMPARATIVE MAP OF SWINE, CATTLE, AND HUMAN GENOMES - (Abstract Only)
DATABASE MANAGEMENT OF HIGH THROUGHPUT EST SEQUENCING AND SNP DISCOVERY - (Abstract Only)
LINKAGE MAPPING ESTS IN PIGS USING SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS): SNP DISCOVERY - (Abstract Only)
LINKAGE MAPPING OF ESTS IN PIGS USING SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS): II. HIGH-THROUGHPUT GENOTYPING AND MAPPING - (Abstract Only)
EVALUATION OF DORSET, FINNSHEEP, ROMANOV, TEXEL, AND MONTADALE BREEDS OF SHEEP: I. EFFECTS OF RAM BREED ON PRODUCTIVITY OF EWES OF TWO CROSSBRED POPULATIONS - (Peer Reviewed Journal)
Freking, B.A., Leymaster, K.A., Young, L.D. 2000. Evaluation of Dorset, Finnsheep, Romanov, Texel, and Montadale breeds of sheep: I. Effects of ram breed on productivity of ewes of two crossbred populations. Journal of Animal Science. 78:1422-1429.
DEVELOPMENT OF SINGLE NUCLEOTIDE POLYMORPHISM (SNP) MARKERS FOR BOVINE NEONATAL FC RECEPTOR - (Abstract Only)
SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) IN THE BOVINE INDUCIBLE NITRIC OXIDE SYNTHASE (BNOS2) GENE - (Abstract Only)
ISOLATION AND EVALUATION OF CANDIDATE GENES FOR THE HIGH GROWTH (HG) MUTATION IN MICE - (Abstract Only)
Horvat, S., McWhir, J., Freking, B.A., Medrano, J.F. 1999. Isolation and evaluation of candidate genes for the high growth (hg) mutation in mice [abstract]. The 13th International Mouse Genome Conference, Philadelphia, PA, October 31-November 3, 1999. #F28.
EVALUATION OF PATERNAL POLAR OVERDOMINANCE BASED ON ALL POSSIBLE MATINGS AMONG CALLIPYGE (CLPG) GENOTYPES - (Abstract Only)
GENOTYPIC EFFECTS AT THE CALLIPYGE LOCUS FOR MEAT QUALITY TRAITS IN LAMBS - (Abstract Only)
FINE MAPPING OF A WARNER-BRATZLER SHEAR FORCE QUANTITATIVE TRAIT LOCUS ON BOVINE CHROMOSOME 15 - (Abstract Only)
THE PROCESS AND USE OF FUNCTIONAL GENOMICS IN BEEF CATTLE: SO YOU HAVE A QTL, NOW WHAT? - (Abstract Only)
EVALUATION OF THE OVINE CALLIPYGE LOCUS: III. GENOTYPIC EFFECTS ON MEAT QUALITY TRAITS - (Peer Reviewed Journal)
FINE MAPPING OF THE OVINE CALLIPYGE LOCUS - (Abstract Only)
TOWARDS A HIGH RESOLUTION GENETIC LINKAGE MAP OF SHEEP CHROMOSOME 18 - (Abstract Only)
EVALUATION OF THE OVINE CALLIPYGE LOCUS: II. GENOTYPIC EFFECTS ON GROWTH, SLAUGHTER, AND CARCASS TRAITS - (Peer Reviewed Journal)
EVALUATION OF THE OVINE CALLIPYGE LOCUS: I. RELATIVE CHROMOSOMAL POSITION AND GENE ACTION - (Peer Reviewed Journal)
GENETIC ASPECTS OF CALLIPYGE IMPLEMENTATION BY THE SHEEP INDUSTRY - (Abstract Only)
EFFECT OF CALLIPYGE (CLPG) GENOTYPES ON GROWTH, CARCASS, AND REPRODUCTION TRAITS - (Abstract Only)
A SECOND GENERATION LINKAGE MAP OF THE SHEEP GENOME - (Peer Reviewed Journal)
CHROMOSOMAL ASSIGNMENT BY LINKAGE OF NINETEEN UNASSIGNED BOVINE MICROSATELLITES USING OVINE REFERENCE POPULATIONS - (Abstract Only)
GENETIC VARIATIONS AND ASSOCIATIONS FOR IMPROVING MEAT PRODUCTION AND MEAT QUALITIES IN SHEEP AND GOATS - (Proceedings)
ARS News Articles