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United States Department of Agriculture

Agricultural Research Service

George R Wiggans
Animal Genomics and Improvement Laboratory
Research Geneticist (Animals)

Phone: (301) 504-8407
Fax: (301) 504-8092
Room 322
10300 BALTIMORE AVENUE
BLDG 005 BARC-WEST
BELTSVILLE, MD, 20705-2350

Projects
Improving Genetic Predictions in Dairy Animals Using Phenotypic and Genomic Information
Appropriated (D)
  Accession Number: 423282
National Dairy Genetic Evaluation Program
Nonfunded Cooperative Agreement (N)
  Accession Number: 424155
1000 Bull Genomes Project
Nonfunded Cooperative Agreement (N)
  Accession Number: 426790
Improvement of Genetic Evaluation of Dairy Cattle through Expanded Genomic Data and Improved Computing Procedures
Trust (T)
  Accession Number: 425556

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Increasing the number of single nucleotide polymorphisms used in genomic evaluations of dairy cattle - (Proceedings)
Wiggans, G.R., Cooper, T.A., Null, D.J., Van Raden, P.M. 2014. Increasing the number of single nucleotide polymorphisms used in genomic evaluations of dairy cattle. World Congress of Genetics Applied in Livestock Production. Vancouver, Canada, Aug. 17–22. 3 pp.
Including cow information in genomic prediction of Holstein dairy cattle in the US - (Proceedings)
Cooper, T.A., Wiggans, G.R., Van Raden, P.M. 2014. Including cow information in genomic prediction of Holstein dairy cattle in the US. World Congress of Genetics Applied in Livestock Production. Vancouver, Canada, Aug. 17–22. 3 pp.
Impact of adding foreign genomic information on Mexican Holstein imputation - (Proceedings)
García-Ruiz, A., Ruiz-Lopez, F.J., Wiggans, G.R., Van Tassell, C.P., Montaldo, H. 2014. Impact of adding foreign genomic information on Mexican Holstein imputation. World Congress of Genetics Applied in Livestock Production. Vancouver, Canada, Aug. 17–22. 3 pp.
Improving genomic prediction for Danish Jersey using a joint Danish-US reference population - (Proceedings)
Guosheng, S., Nielsen, U.S., Wiggans, G.R., Aamand, G.P., Guldbrandtsen, B., Lund, M.S. 2014. Improving genomic prediction for Danish Jersey using a joint Danish-US reference population. World Congress of Genetics Applied in Livestock Production. Vancouver, Canada, Aug. 17–22. 3 pp.
Approximation of reliability of direct genomic breeding values - (Proceedings)
Sargolzaei, M., Schaeffer, L.R., Chesnais, J., Kistemaker, G., Wiggans, G.R., Schenkel, F.S. 2014. Approximation of reliability of direct genomic breeding values. World Congress of Genetics Applied in Livestock Production. Vancouver, Canada, Aug. 17–22. 3 pp.
Genetic architechture and biological basis for feed efficiency in dairy cattle - (Proceedings)
Spurlock, D.M., Tempelman, R.J., Weigel, K.A., Armentano, L.E., Wiggans, G.R., Veerkamp, R.F., de Haas, Y., Coffey, M.P., Connor, E.E. Hanigan, M.D., Staples, C.R., VandeHaar, M.J. 2014. Genetic architecture and biological basis of feed efficiency in dairy cattle. In: Proceedings of the 10th World Congress on Genetics Applied to Livestock Production, August 17-22, 2014, Vancouver, BC, Canada. Paper 287.
Calculation and delivery of US genomic evaluations for dairy cattle - (Abstract Only)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M., Null, D.J., Hutchison, J.L., Meland, O.M., Tooker, M.E., Norman, H.D. 2014. Calculation and delivery of US genomic evaluations for dairy cattle. Journal of Dairy Science. 97(E-Suppl. 1):77–78 (abstr. 0152).
Determination of single nucleotide polymorphisms associated with subclinical ketosis in Jersey cattle - (Abstract Only)
Fugate, R.T., Dauten, L.H., Wiggans, G.R., White, H.M. 2014. Determination of single nucleotide polymorphisms associated with subclinical ketosis in Jersey cattle. Journal of Dairy Science. 97(E-Suppl. 1):472 (abstr. 0945/T043).
Bovine exome sequence analysis and targeted SNP genotyping of recessive fertility defects HH2, HH3, and BH1 reveals causative mutation in SMC2 for HH3 Reprint Icon - (Peer Reviewed Journal)
Mc Clure, M., Bickhart, D.M., Null, D.J., Van Raden, P.M., Xu, L., Wiggans, G.R., Liu, G., Schroeder, S.G., Glasscock, J., Armstrong, J., Cole, J.B., Sonstegard, T.S., Van Tassell, C.P. 2014. Bovine exome sequence analysis and targeted SNP genotyping of recessive fertility defects HH2, HH3, and BH1 reveals causative mutation in SMC2 for HH3. PLoS One. 9(3):e92769.
Genomic evaluation, breed identification, and discovery of a haplotype affecting fertility for Ayrshire dairy cattle Reprint Icon - (Peer Reviewed Journal)
Cooper, T.A., Wiggans, G.R., Null, D.J., Hutchison, J.L., Cole, J.B. 2014. Genomic evaluation, breed identification, and discovery of a haplotype affecting fertility for Ayrshire dairy cattle. Journal of Dairy Science. 97(6):3878-3882.
Application of the a posteriori granddaughter design to the Holstein genome Reprint Icon - (Peer Reviewed Journal)
Weller, J.I., Cole, J.B., Van Raden, P.M., Wiggans, G.R. 2014. Application of the a posteriori granddaughter design to the Holstein genome. Animal. 8(4):511-519.
Effect of artificial selection on runs of Homozygosity in U.S. Holstein cattle Reprint Icon - (Peer Reviewed Journal)
Kim, E., Cole, J.B., Huson, H.J., Wiggans, G.R., Van Tassell, C.P., Crooker, B.A., Liu, G., Da, Y., Sonstegard, T.S. 2013. Effect of artificial selection on runs of Homozygosity in U.S. Holstein cattle. PLoS One. PLoS One.2013 Nov 14;8(11):e80813.
Imputation of microsatellite alleles from dense SNP genotypes for parentage verification across multiple Bos taurus and Bos indicus breeds - (Peer Reviewed Journal)
Mcclure, M.C., Sonstegard, T.S., Wiggans, G.R., Van Eenennaam, A., Weber, K., Penedo, M., Berry, D.P., Flynn, J., Garcia, J., Santana Do Carmo, A., Regitano, L., Albuquerque, M., Silva, M.V., Machado, M.A., Coffey, M., Moore, K., Boscher, M., Genestout, L., Mazza, R., Taylor, J.F., Schnabel, R., Simpson, B., Marques, E., Mc Ewan, J., Cromie, A., Lehmann Coutinho, L., Kuehn, L.A., Keele, J.W., Piper, E., Cook, J., Williams, R., Hap Map Consortium, B., Van Tassell, C.P. 2013. Imputation of microsatellite alleles from dense SNP genotypes for parentage verification across multiple Bos taurus and Bos indicus breeds. Frontiers in Genetics. 4:176. DOI.10.3389/fgene.2013.00176.
Application of a posteriori granddaughter and modified granddaughter designs to determine Holstein haplotype effects - (Peer Reviewed Journal)
Weller, J.I., Van Raden, P.M., Wiggans, G.R. 2013. Application of a posteriori granddaughter and modified granddaughter designs to determine Holstein haplotype effects. Journal of Dairy Science. 96(8)5376-5387.
Using 90,113 single nucleotide polymorphisms in genomic evaluation of dairy cattle - (Abstract Only)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M. 2013. Using 90,113 single nucleotide polymorphisms in genomic evaluation of dairy cattle. Journal of Dairy Science. 96(E-Suppl. 1):617 (abstr. 539).
Genomic evaluation and identification of haplotype affecting fertility for Ayrshire dairy cattle - (Abstract Only)
Cooper, T.A., Wiggans, G.R., Null, D.J., Hutchison, J.L. 2013. Genomic evaluation and identification of haplotype affecting fertility for Ayrshire dairy cattle. Journal of Dairy Science. 96(E-Suppl. 1):74 (abstr. T206).
Application of a posteriori granddaughter and modified granddaughter designs to determine Holstein haplotype effects - (Abstract Only)
Weller, J.I., Van Raden, P.M., Wiggans, G.R. 2013. Application of a posteriori granddaughter and modified granddaughter designs to determine Holstein haplotype effects. Journal of Dairy Science. 96(E-Suppl. 1):617 (abstr. 538).
Fine mapping for Weaver Syndrome in the Brown Swiss breed with the identification of possible casual mutations across NRCAM, PNPLA8, and CTTNBP2 and Developement of a diagnostic SNP haplotype - (Peer Reviewed Journal)
Mcclure, M.C., Kim, E., Bickhart, D.M., Null, D.J., Cooper, T.A., Cole, J.B., Wiggans, G.R., Marsan, P.A., Colli, L., Santus, E., Liu, G., Schroeder, S.G., Matukumalli, L., Van Tassell, C.P., Sonstegard, T.S. 2013. Fine mapping for Weaver Syndrome in the Brown Swiss breed with the identification of possible casual mutations across NRCAM, PNPLA8, and CTTNBP2 and Developement of a diagnostic SNP haplotype. PLoS One. 8(3):e59251.
Short communication: Relationship of call rate and accuracy of single nucleotide polymorphism genotypes in dairy cattle - (Peer Reviewed Journal)
Cooper, T.A., Wiggans, G.R., Van Raden, P.M. 2013. Short communication: Relationship of call rate and accuracy of single nucleotide polymorphism genotypes in dairy cattle. Journal of Dairy Science. 96(5):3336-3339.
Microsatellite Imputation for parental verification from SNP across multiple Bos taurus and indicus breeds - (Abstract Only)
Mcclure, M.C., Sonstegard, T.S., Van Tassell, C.P., Wiggans, G.R., Van Eenennaam, A., Weber, K., Penedo, C., Berry, D., Flynn, J., Fernando Garcia, J., Santa, A., Regitano, L., Albuquerque, M., Silva, M., Coffey, M., Moore, K., Boscher, M., Genestout, L., Mazza, R., Taylor, J., Schnabel, R., Machado, M.A., Simpson, B., Mcewan, J., Cromie, A., Countinho, L.L., Kuehn, L.A., Keele, J.W., Piper, E., Cook, J., Marques, E. 2013. Microsatellite Imputation for parental verification from SNP across multiple Bos taurus and indicus breeds. Plant Animal Genome XXI, paper PO132, pp. 206.
Short communication: Genetic evaluation of mobility for Brown Swiss dairy cattle - (Peer Reviewed Journal)
Wright, J.R., Wiggans, G.R., Muenzenberger, J.R., Neitzel, R.R. 2013. Short communication: Genetic evaluation of mobility for Brown Swiss dairy cattle. Journal of Dairy Science. 96(4):2657-2660.
Genomics and parentage identification/verification - (Other) - (03-Dec-12)
Confirmation and discovery of maternal grandsires and great grandsires in dairy cattle - (Peer Reviewed Journal)
Van Raden, P.M., Cooper, T.A., Wiggans, G.R., O'Connell, J.R., Bacheller, L.R. 2013. Confirmation and discovery of maternal grandsires and great grandsires in dairy cattle. Journal of Dairy Science. 96(3):1874-1879.
Technical note: Characteristics and use of the Illumina BovineLD and GeneSeek Genomic Profiler low-density bead chips for genomic evaluation - (Peer Reviewed Journal)
Wiggans, G.R., Cooper, T.A., Van Tassell, C.P., Sonstegard, T.S., Simpson, E.B. 2013. Technical note: Characteristics and use of the Illumina BovineLD and GeneSeek Genomic Profiler low-density bead chips for genomic evaluation. Journal of Dairy Science. 96(2):1258-1263.
Genomic imputation and evaluation using high density Holstein genotypes - (Peer Reviewed Journal)
Van Raden, P.M., Null, D.J., Sargolzaei, M., Wiggans, G.R., Tooker, M.E., Cole, J.B., Sonstegard, T.S., Connor, E.E., Winters, M., Van Kaam, J., Van Doormaal, B.J., Faust, M.A., Doak, G.A. 2013. Genomic imputation and evaluation using high density Holstein genotypes. Journal of Dairy Science. 96(1):668-678.
Effect of sample stratification on dairy GWAS results - (Peer Reviewed Journal)
Ma, L., Wiggans, G.R., Wang, S., Sonstegard, T.S., Yang, J., Crooker, B.A., Cole, J.B., Van Tassell, C.P., Da, Y. 2012. Effect of sample stratification on dairy GWAS results. Biomed Central (BMC) Genomics. 13:536.
Fine mapping of copy number variations on two cattle genome assemblies using high density SNP array - (Peer Reviewed Journal)
Hou, Y., Bickhart, D.M., Hvinden, M.L., Li, C., Song, J., Boichard, D.A., Fritz, S., Eggen, A., Denise, S., Wiggans, G.R., Sonstegard, T.S., Van Tassell, C.P., Liu, G. 2012. Fine mapping of copy number variations on two cattle genome assemblies using high density SNP array. Biomed Central (BMC) Genomics. 13:376.
Imputation of microsatellite allele from dense SNP genotypes for parentage verification - (Peer Reviewed Journal)
Mcclure, M.C., Sonstegard, T.S., Van Tassell, C.P., Wiggans, G.R. 2012. Imputation of Microsatellite Allele from Dense SNP Genotypes for Parentage Verification. Frontiers in Livestock Genomics. 3:140.
Background on the development of a nonfunded cooperative agreement between USDA’s Agricultural Research Service (ARS) and the Council on Dairy Cattle Breeding (CDCB) - (Government Publication)
Wiggans, G.R. 2012. Background on the development of a nonfunded cooperative agreement between USDA’s Agricultural Research Service (ARS) and the Council on Dairy Cattle Breeding (CDCB). AIPL Research Reports. NFCA-CDCB1 (06-12).
Signature of forty years of artificial selection in U.S. Holstein cattle identified by long-range frequency analyses - (Proceedings)
Sonstegard, T.S., Wang, S., Van Tassell, C.P., Ma, L., Wiggans, G.R., Crooker, B., Cole, J.B., Mariani, B.D., Kim, E., Garbe, J.R., Fahrenkrug, S., Liu, G., Da, Y. 2012. Signature of forty years of artificial selection in U.S. Holstein cattle identified by long-range frequency analyses. International Conference on Quantitative Genetics: Understanding Variation in Complex Traits, Edinburgh, Scotland, June 17–22, Programme & Book of Abstracts, p. 213, abstr. P-314.
Maternal grandsire confirmation and discovery in dairy cattle - (Abstract Only)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M., O'Connell, J.R., Bacheller, L.R. 2012. Maternal grandsire confirmation and discovery in dairy cattle. Journal of Dairy Science. 95(Suppl. 2):400(abstr. 323). 2012.
Characteristics and use of the Illumina BovineLD BeadChip - (Abstract Only)
Wiggans, G.R., Van Raden, P.M., Cooper, T.A., Van Tassell, C.P., Sonstegard, T.S., Simpson, B. 2012. Characteristics and use of the Illumina BovineLD BeadChip. Journal of Dairy Science. 95(Suppl. 2):447(abstr. 450). 2012.
Genetic evaluation of mobility for Brown Swiss dairy cattle - (Abstract Only)
Wiggans, G.R., Wright, J.R., Muenzenberger, C.J., Neitzel, R.R. 2012. Genetic evaluation of mobility for Brown Swiss dairy cattle. Journal of Dairy Science. 95(Suppl. 2):267(abstr. T43). 2012.
Design of a bovine low-density SNP array optimized for imputation - (Peer Reviewed Journal)
Boichard, D., Chung, H., Dassonneville, R., David, X., Eggen, A., Fritz, S., Gietzen, K.J., Hayes, B.J., Lawley, C.T., Sonstegard, T.S., Van Tassell, C.P., Van Raden, P.M., Viaud, K., Wiggans, G.R. 2012. Design of a bovine low-density SNP array optimized for imputation. PLoS One. 7(3):e34130.
Technical note: Adjustment of all cow evaluations for yield traits to be comparable with bull evaluations - (Peer Reviewed Journal)
Wiggans, G.R., Van Raden, P.M., Cooper, T.A. 2012. Technical note: Adjustment of all cow evaluations for yield traits to be comparable with bull evaluations. Journal of Dairy Science. 95(6):3444-3447.
Breed differences over time and heritability estimates for production and reproduction traits of dairy goats in the United States - (Peer Reviewed Journal)
Garcia-Peniche, T.B., Montaldo, H.H., Valencia-Posadas, M., Wiggans, G.R., Hubbard, S.M., Torres-Vazquez, J.A., Shepard, L. 2012. Breed differences over time and heritability estimates for production and reproduction traits of dairy goats in the United States. Journal of Dairy Science. 95(5):2707-2717.
Genome-wide association analysis of thirty one production, health, reproduction and body conformation traits in contemporary U.S. Holstein cows - (Peer Reviewed Journal)
Cole, J.B., Wiggans, G.R., Ma, L., Sonstegard, T.S., Lawlor, T.J., Crooker, B.A., Van Tassell, C.P., Yang, J., Wang, S., Matukumalli, L.K., Da, Y. 2011. Genome-wide association analysis of thirty one production, health, reproduction and body conformation traits in contemporary U.S. Holstein cows. Biomed Central (BMC) Genomics. Online, 12:408.
Technical note: Adjustment of traditional cow evaluations to improve accuracy of genomic predictions - (Peer Reviewed Journal)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M., Cole, J.B. 2011. Technical note: Adjustment of traditional cow evaluations to improve accuracy of genomic predictions. Journal of Dairy Science. 94(12):6188-6193.
Genomic inbreeding and relationships among Holsteins, Jerseys, and Brown Swiss - (Peer Reviewed Journal)
Van Raden, P.M., Olson, K.M., Wiggans, G.R., Cole, J.B., Tooker, M.E. 2011. Genomic inbreeding and relationships among Holsteins, Jerseys, and Brown Swiss. Journal of Dairy Science. 94(11):5673-5682.
Imputation of missing genotypes from sparse to high density using long-range phasing - (Peer Reviewed Journal)
Dawtwyler, H.D., Wiggans, G.R., Hayes, B.J., Woolliams, J.A., Goddard, M.E. 2011. Imputation of missing genotypes from sparse to high density using long-range phasing. Genetics. 189:317-327.
Dairy genomics in application - (Proceedings)
Wiggans, G.R., Van Raden, P.M., Cooper, T.A. 2011. Dairy genomics in application. Minnesota Dairy Health Conference, St. Paul, MN, May 17-19, pp 29-38.
Dairy cattle genomics evaluation program update - (Proceedings)
Wiggans, G.R., Van Raden, P.M., Cooper, T.A. 2011. Dairy cattle genomics evaluation program update. National Breeders Roundtable Proceedings. St. Louis, MO, May 5–6, pp. 31-41.
SNP panels/Imputation - (Proceedings) - (04-Apr-11)
The genomic evaluation system in the United States: Past, present, future - (Peer Reviewed Journal)
Wiggans, G.R., Van Raden, P.M., Cooper, T.A. 2011. The genomic evaluation system in the United States: Past, present, future. Journal of Dairy Science. 94(6):3202-3211.
Genomic evaluations with many more genotypes - (Peer Reviewed Journal)
Van Raden, P.M., O'Connell, J.R., Wiggans, G.R., Weigel, K.A. 2011. Genomic evaluations with many more genotypes. Genetic Selection Evolution. 43:10.
Use of the Illumina Bovine3K BEAD chip in dairy genomic evaluation - (Abstract Only)
Wiggans, G.R., Cooper, T.A., Olson, K.M., Van Raden, P.M. 2011. Use of the Illumina Bovine3K BEAD chip in dairy genomic evaluation. Journal of Animal Science 89(E-Suppl. 1)/Journal of Dairy Science 94(E-Suppl. 1):420(abstr. 329).
Adjustment of deregressed values from cow evaluations to have the similar mean and variance as bull deregressed values - (Abstract Only)
Wiggans, G.R., Van Raden, P.M., Cooper, T.A. 2011. Adjustment of deregressed values from cow evaluations to have the similar mean and variance as bull deregressed values. Journal of Animal Science 89(E-Suppl. 1)/Journal of Dairy Science 94(E-Suppl. 1):165(abstr. 37).
Genomic imputation and evaluation using 342 high density Holstein genotypes - (Abstract Only)
Van Raden, P.M., Null, D.J., Wiggans, G.R., Sonstegard, T.S., Connor, E.E. 2011. Genomic imputation and evaluation using 342 high density Holstein genotypes. Journal of Animal Science 89(E-Suppl. 1)/ Journal of Dairy Science 94(E-Suppl. 1):533(abstr. W53).
Properties of different density genotypes used in dairy cattle evaluation - (Abstract Only)
Van Raden, P.M., Tooker, M.E., Olson, K.M., Cooper, T.A., Wiggans, G.R., Van Tassell, C.P. 2011. Properties of different density genotypes used in dairy cattle evaluation. Journal of Animal Science 89(E-Suppl. 1)/Journal of Dairy Science 94(E-Suppl. 1):420(abstr. 330).
Multiple trait genomic evaluation of conception rate in Holsteins - (Peer Reviewed Journal)
Aguilar, I., Misztal, I., Tsuruta, S., Wiggans, G.R., Lawlor, T.J. 2011. Multiple trait genomic evaluation of conception rate in Holsteins. Journal of Dairy Science. 94(5):2621-2624.
Genomic Evaluations: Past, Present, Future Reprint Icon - (Proceedings)
Wiggans, G.R. 2010. Genomic Evaluations: Past, Present, Future. Dairy Cattle Reproduction Council Proceedings. St. Paul, MN, Nov. 11-12, pp. 45-52.
Genomic evaluations: Past, present, and future - (Proceedings) - (10-Nov-10)
Increased Reliability Of Genetic Evaluations For Dairy Cattle In The United States From Use Of Genomic Information - (Abstract Only)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M., Silva, M.V. 2010. Increased Reliability Of Genetic Evaluations For Dairy Cattle In The United States From Use Of Genomic Information. World Congress of Genetics Applied in Livestock Production. Proc. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6, abstr. p. 18.
Imputation of Missing Genotypes From Sparse to High Density Using Long-Range Phasing - (Abstract Only)
Daetwyler, H.D., Wiggans, G.R., Hayes, B.J., Woolliams, J.A., Goddard, M.E. 2010. Imputation of Missing Genotypes From Sparse to High Density Using Long-Range Phasing. World Congress of Genetics Applied in Livestock Production. Proc. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6, abstr. p. 117.
Imputation of Missing Genotypes From Sparse to High Density Using Long-Range Phasing - (Proceedings)
Daetwyler, H.D., Wiggans, G.R., Hayes, B.J., Wolliams, J.A., Goddard, M.E. 2010. Imputation of Missing Genotypes From Sparse to High Density Using Long-Range Phasing. World Congress of Genetics Applied in Livestock Production. Proc. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6, 4 pp.
High Resolution QTL Maps Of 31 Traits in Contemporary U.S. Holstein Cows - (Abstract Only)
Cole, J.B., Wiggans, G.R., Ma, L., Sonstegard, T.S., Crooker, B.A., Van Tassell, C.P., Yang, J., Matukumalli, L.K., Da, Y. 2010. High Resolution QTL Maps Of 31 Traits in Contemporary U.S. Holstein Cows. World Congress of Genetics Applied in Livestock Production. Proc. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6., abstr. p. 22.
High Resolution QTL Maps Of 31 Traits in Contemporary U.S. Holstein Cows - (Proceedings)
Cole, J.B., Wiggans, G.R., Ma, L., Sonstegard, T.S., Crooker, B.A., Van Tassell, C.P., Yang, J., Matukumalli, L.K., Da, Y. 2010. High Resolution QTL Maps Of 31 Traits in Contemporary U.S. Holstein Cows. World Congress of Genetics Applied in Livestock Production. Proc. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6., 4 pp.
Genomic Selection and its Effects on Dairy Cattle Breeding Programs - (Abstract Only)
Weigel, K.A., De Los Campos, G., Vazquez, A.I., Van Tassell, C.P., Rosa, G., Gianola, D., O'Connell, J.R., Van Raden, P.M., Wiggans, G.R. 2010. Genomic Selection and its Effects on Dairy Cattle Breeding Programs. World Congress of Genetics Applied in Livestock Production. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6, abstr. p. 19.
Genomic Selection and its Effects on Dairy Cattle Breeding Programs - (Proceedings)
Weigel, K.A., De Los Campos, G., Vazquez, A.I., Van Tassell, C.P., Rosa, G., Gianola, D., O'Connell, J.R., Van Raden, P.M., Wiggans, G.R. 2010. Genomic Selection and its Effects on Dairy Cattle Breeding Programs. World Congress of Genetics Applied in Livestock Production. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6, 8 pp.
Increased Reliability Of Genetic Evaluations For Dairy Cattle In The United States From Use Of Genomic Information - (Proceedings)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M., Silva, M.V. 2010. Increased Reliability Of Genetic Evaluations For Dairy Cattle In The United States From Use Of Genomic Information. World Congress of Genetics Applied in Livestock Production. Proc. 9th World Congr. Genet. Appl. Livest. Prod., Leipzig, Germany, Aug. 1–6, 4 pp.
Forty Years Of Artificial Selection In U.S. Holstein Cattle Had Genome-wide Signatures - (Proceedings)
Sonstegard, T.S., Ma, L., Van Tassell, C.P., Kim, E., Cole, J.B., Wiggans, G.R., Crooker, B.A., Mariani, B.D., Gerber, J.R., Fahrenkrug, S.C., Liu, G., Da, Y. 2010. Forty Years Of Artificial Selection In U.S. Holstein Cattle Had Genome-wide Signatures. World Congress of Genetics Applied in Livestock Production.
Imputation of Cow Genotypes and Adjustment of PTAs - (Government Publication)
Cooper, T.A., Tooker, M.E., Van Raden, P.M., Wiggans, G.R., Cole, J.B. 2010. Imputation of Cow Genotypes and Adjustment of PTAs. AIPL Research Reports. GENOMICS1 (4-10).
Improved reliability approximation for genomic evaluations in the United States - (Abstract Only)
Wiggans, G.R., Van Raden, P.M. 2010. Improved reliability approximation for genomic evaluations in the United States. Journal of Dairy Science. 93(E-Suppl. 1):533(abstr. 617).
Cow Adjustments for Genomic Predictions of Holstein and Jersey Bulls - (Abstract Only)
Wiggans, G.R., Cooper, T.A., Van Raden, P.M. 2010. Cow Adjustments for Genomic Predictions of Holstein and Jersey Bulls. Journal of Dairy Science. 93(E-Suppl. 1):533-34(abstr. 618).
Filling in missing genotypes using haplotypes - (Abstract Only)
Van Raden, P.M., O'Connell, J.R., Wiggans, G.R., Weigel, K.A. 2010. Filling in missing genotypes using haplotypes. Journal of Dairy Science. 93(E-Suppl. 1):534-35(abstr. 622).
Selection and Management of DNA Markers for Use in Genomic Evaluation Reprint Icon - (Peer Reviewed Journal)
Wiggans, G.R., Van Raden, P.M., Bacheller, L.R., Tooker, M.E., Hutchison, J.L., Cooper, T.A., Sonstegard, T.S. 2010. Selection and management of DNA markers for use in genomic evaluation. Journal of Dairy Science. 93(5):2287-2292.
Prediction of Unobserved Single Nucleotide Polymorphism Genotypes of Jersey Cattle Using Reference Panels and Population-Based Imputation Algorithms Reprint Icon - (Peer Reviewed Journal)
Weigel, K.A., Van Tassell, C.P., O'Connell, J.R., Van Raden, P.M., Wiggans, G.R. 2010. Prediction of unobserved single nucleotide polymorphism genotypes of Jersey cattle using reference panels and population-based imputation algorithms. Journal of Dairy Science. 93(5):2229-2238.
High Resolution QTL Map Of Body Conformation Traits From Genome-Wide Association Analysis In Contemporary U.S. Holstein Cows - (Abstract Only)
Wiggans, G.R., Ma, L., Sonstegard, T.S., Cole, J.B., Crooker, B.A., Van Tassell, C.P., Yang, J., Matukumalli, L.K., Da, Y. 2010. High Resolution QTL Map Of Body Conformation Traits From Genome-Wide Association Analysis In Contemporary U.S. Holstein Cows. Plant and Animal Genome Conference Proceedings. San Diego, Ca, Jan. 9-13, abstr. P547.
High Resolution QTL Map Of Net Merit Component Traits And Calving Traits From Genome-Wide Association Analysis In Contemporary U.S. Holstein Cows - (Abstract Only)
Cole, J.B., Sonstegard, T.S., Ma, L., Wiggans, G.R., Crooker, B.A., Van Tassell, C.P., Yang, J., Matukumalli, L., Da, Y. 2010. High Resolution QTL Map Of Net Merit Component Traits And Calving Traits From Genome-Wide Association Analysis In Contemporary U.S. Holstein Cows. Plant and Animal Genome Conference Proceedings. San Diego, Ca, Jan. 9-13, abstr. P565.
X Chromosome SNPs Were Heavily Involved In Epistasis Effects Of Net Merit Component Traits In Contemporary U.S. Holstein Cows - (Abstract Only)
Ma, L., Sonstegard, T.S., Cole, J.B., Wiggans, G.R., Crooker, B.A., Van Tassell, C.P., Yang, J., Matukumalli, L., Da, Y. 2010. X Chromosome SNPs Were Heavily Involved In Epistasis Effects Of Net Merit Component Traits In Contemporary U.S. Holstein Cows . Plant and Animal Genome Conference Proceedings. San Diego, Ca, Jan. 9-13, abstr. P542.
Short Communication: Genetic and environmental relationships between milk yield and kidding interval in dairy goats Reprint Icon - (Peer Reviewed Journal)
Montaldo, H.H., Valencia-Posadas, M., Wiggans, G.R., Shepard, L., Torres-Vazquez, J.A. 2010. Short Communication: Genetic and environmental relationships between milk yield and kidding interval in dairy goats. Journal of Dairy Science. 93(1):370-372.
Análise de Associação por Todo o Genoma para Identificar Locos Relacionados ao Lucro Líquido, à Vida Produtiva e ao Escore de Células Somáticas na raça Jersey1 - (Peer Reviewed Journal)
Silva, M., Van Raden, P.M., Van Tassell, C.P., Sonstegard, T.S., Matukumalli, L.K., Schroeder, S.G., Kim, E., Wiggans, G.R. 2009. Análise de Associação por Todo o Genoma para Identificar Locos Relacionados ao Lucro Líquido, à Vida Produtiva e ao Escore de Células Somáticas na raça Jersey1. Brazilian Animal Science Society.
Somatic Cell Count in Milk of Goats Enrolled in Dairy Herd Improvement Program in 2007 - (Abstract Only)
Zhang, L., Wiggans, G.R., Clay, J., Lacroix, R., Wang, J.Z., Gipson, T., Zeng, S.S. 2009. Somatic Cell Count in Milk of Goats Enrolled in Dairy Herd Improvement Program in 2007. Journal of Dairy Science. 92(E-Suppl. 1):306(abstr. T343).
Genomic Evaluation of Holstein Cattle in Canada Utilizing MACE Proofs - (Abstract Only)
Schenkel, F.S., Sargolzaei, M., Kistemaker, G., Jansen, G.B., Sullivan, P., Van Doormaal, B.J., Van Raden, P.M., Wiggans, G.R. 2009. Genomic Evaluation of Holstein Cattle in Canada Utilizing MACE Proofs. Journal of Dairy Science. 92(E-Suppl. 1):396(abstr. W38).
Transition of genomic evaluation from a research project to a production system - (Abstract Only)
Wiggans, G.R., Van Raden, P.M., Bacheller, L.R., Ross Jr, F.A., Sonstegard, T.S., Ge Meerman, G., Van Tassell, C.P. 2009. Transition of genomic evaluation from a research project to a production system. Journal of Dairy Science. 92(E-Suppl. 1):313-314(abstr. 278).
Accelerating genetic improvement with SNP chips and DNA sequencing - (Abstract Only)
Van Tassell, C.P., Van Raden, P.M., Wiggans, G.R., Matukumalli, L.K., Schroeder, S.G., O'Connell, J., Schnabel, R.D., Taylor, J.F., Pollak, E.J., Munson, M., Bailey, D., Sonstegard, T.S. 2009. Accelerating genetic improvement with SNP chips and DNA sequencing. Joint Abstracts of the American Dairy Science and Society of Animal Science.
Selection of single-nucleotide polymorphisms and quality of genotypes used in genomic evaluation of dairy cattle in the United States and Canada Reprint Icon - (Peer Reviewed Journal)
Wiggans, G.R., Sonstegard, T.S., Van Raden, P.M., Matukumalli, L.K., Schnabel, R.D., Taylor, J.F., Schenkel, F.S., Van Tassell, C.P. 2009. Selection of single-nucleotide polymorphisms and quality of genotypes used in genomic evaluation of dairy cattle in the United States and Canada. Journal of Dairy Science. 92(7):3431-3436.
Selection: Evaluation and methods - (Book / Chapter)
Wiggans, G.R., Gengler, N. 2011. Selection: Evaluation and methods. In: Fuquay, J.W, Fox, P.F., and McSweeney, P.L.H., editors. Encyclopedia of Dairy Sciences. 2nd edition. San Diego, CA: Academic Press. p. 649-655.
Genome Signature of Artificial Selection for High Milk Yield in Holstein Cattle - (Abstract Only)
Sonstegard, T.S., Ma, L., Cole, J.B., Wiggans, G.R., Crooker, B.A., Van Tassell, C.P., Mariani, B.D., Da, Y. 2009. Genome Signature of Artificial Selection for High Milk Yield in Holstein Cattle. Plant and Animal Genome Conference Proceedings.
Genome-Wide Association Analysis Identifies Loci for Productive Traits in Jersey Breed - (Abstract Only)
Silva, M.V., Van Raden, P.M., Van Tassell, C.P., Sonstegard, T.S., Matukumalli, L.K., Schroeder, S.G., Wiggans, G.R. 2009. GENOME-WIDE ASSOCIATION ANALYSIS IDENTIFIES LOCI FOR PRODUCTIVE TRAITS IN JERSEY BREED. Plant and Animal Genome Conference.
Distribution and Location of Genetic Effects for Dairy Traits Reprint Icon - (Peer Reviewed Journal)
Cole, J.B., Van Raden, P.M., O'Connell, J.R., Van Tassell, C.P., Sonstegard, T.S., Schnabel, R.D., Taylor, J.F., Wiggans, G.R. 2009. Distribution and Location of Genetic Effects for Dairy Traits. Journal of Dairy Science. 92(6):2931-2946.
Benefits from Cooperation in Genomics - (Proceedings)
Van Raden, P.M., Wiggans, G.R., Van Tassell, C.P., Sonstegard, T.S., Schenkel, F. 2009. Benefits from Cooperation in Genomics. Interbull Annual Meeting Proceedings. Uppsala, Sweden, Jan. 28–29, 6 pp.
Reliability of Genomic Evaluation of Holstein Cattle in Canada - (Proceedings)
Schenkel, F.S., Sargolzaei, M., Kistemaker, G., Jansen, G.B., Sullivan, P., Van Doormaal, B.J., Van Raden, P.M., Wiggans, G.R. 2009. Reliability of Genomic Evaluation of Holstein Cattle in Canada. Interbull Annual Meeting Proceedings. Uppsala, Sweden, Jan. 26–29, 8 pp.
Invited Review: Reliability of Genomic Predictions for North American Holstein Bulls Reprint Icon - (Peer Reviewed Journal)
Van Raden, P.M., Van Tassell, C.P., Wiggans, G.R., Sonstegard, T.S., Schnabel, R.D., Taylor, J.F., Schenkel, F.S. 2009. Invited Review: Reliability of Genomic Predictions for North American Holstein Bulls. Journal of Dairy Science. 92(1):16-24.
Predicion of total genetic value using a 50K SNP chip in Holstein breed - (Abstract Only)
Silva, M.V., Van Tassell, C.P., Sonstegard, T.S., Matukumalli, L., Van Raden, P.M., Wiggans, G.R. 2008. Predicion of total genetic value using a 50K SNP chip in Holstein breed. Brazilian Animal Science Society.
Prediction of total genetic value using genome-wide dense marker in Holstein breed by Bayesian method - (Abstract Only)
Silva, M.V., Van Tassell, C.P., Sonstegard, T.S., Matkumalli, L., Schroeder, S.G., Van Raden, P.M., Wiggans, G.R. 2008. Prediction of total genetic value using genome-wide dense marker in Holstein breed by Bayesian method. Congress of the Brazilian Animal Breeding Society.
Genomic signatures of artificial selection in U.S. Holstein cows - (Abstract Only) - (20-Jun-08)
Genomic Data and Cooperation Result in Faster Progress - (Proceedings)
Van Raden, P.M., Van Tassell, C.P., Wiggans, G.R., Sonstegard, T.S., Schnabel, R.D., Taylor, J.F., Schenkel, F. 2009. Genomic Data and Cooperation Result in Faster Progress. International Committee on Animal Recording (ICAR). ICAR Tech Ser. 13:341–346. 2009.
Distribution and Location of Genetic Effects for Dairy Traits - (Proceedings)
Cole, J.B., Van Raden, P.M., O'Connell, J.R., Van Tassell, C.P., Sonstegard, T.S., Schnabel, R.D., Wiggans, G.R. 2009. Distribution and Location of Genetic Effects for Dairy Traits. International Committee on Animal Recording (ICAR). ICAR Tech Ser. 13:355–360. 2009.
Genomic Evaluations in the United States and Canada: A Collaboration - (Proceedings)
Wiggans, G.R., Sonstegard, T.S., Van Raden, P.M., Matukumalli, L.K., Schnabel, R.D., Taylor, J.F., Chesnais, J.P., Schenkel, F.S., Van Tassell, C.P. 2009. Genomic Evaluations in the United States and Canada: A Collaboration. International Committee on Animal Recording (ICAR). ICAR Tech Ser. 13:347–353. 2009.
Technical Note: Adaptation of an Animal-Model Method for Approximation of Reliabilities to a Sire-Maternal Grandsire Model Reprint Icon - (Peer Reviewed Journal)
Wiggans, G.R., Tsuruta, S., Misztal, I. 2008. Technical Note: Adaptation of an Animal-Model Method for Approximation of Reliabilities to a Sire-Maternal Grandsire Model. Journal of Dairy Science. 91(10):4058-4061.
Processing of data discrepancies for U.S. dairy cattle and effect on genetic evaluations - (Proceedings)
Wiggans, G.R., Thornton, L.L. 2009. Processing of data discrepancies for U.S. dairy cattle and effect on genetic evaluations. International Committee on Animal Recording (ICAR). ICAR Tech Ser. 13:393–398. 2009.
Will genomic selection change the way sires are chosen, evaluated, sampled and marketed? - (Popular Publication)
Rogers, G.W., Van Tassell, C.P., Van Raden, P.M., Wiggans, G.R. 2008. Will genomic selection change the way sires are chosen, evaluated, sampled and marketed?. Genetic Trends. 60(3):6-8
State and National Standardized Lactation Averages by Breed for Cows Calving in 2006 - (Government Publication)
Norman, H.D., Thornton, L.L., Wiggans, G.R. 2008. State and National Standardized Lactation Averages by Breed for Cows Calving in 2006. AIPL Research Reports. K2-06(3-08).
Reliability of genomic predictions for North American dairy bulls - (Abstract Only)
Van Raden, P.M., Van Tassell, C.P., Wiggans, G.R., Sonstegard, T.S., Schnabel, R.D., Schenkel, F. 2008. Reliability of genomic predictions for North American dairy bulls. Journal of Dairy Science. 91(E-Suppl. 1):305(abstr. 261).
Selection of single nucleotide polymorphisms and genotype quality for genomic prediction of genetic merit in dairy cattle - (Abstract Only)
Wiggans, G.R., Sonstegard, T.S., Van Raden, P.M., Matukumalli, L.K., Schnabel, R.D., Taylor, J.F., Schenkel, F.S., Van Tassell, C.P. 2008. Selection of single nucleotide polymorphisms and genotype quality for genomic prediction of genetic merit in dairy cattle. Journal of Dairy Science. 91(E-Suppl. 1):507(abstr. 524).
Construction and application of a bovine high-density SNP assay - (Abstract Only)
Van Tassell, C.P., Matukumalli, L.K., Taylor, C., Smith, T.P., Sonstegard, T.S., Schnabel, R., Silva, M.V., Wiggans, G.R., Liu, G., Moore, S., Taylor, J.F. 2007. Construction and application of a bovine high-density SNP assay. Joint Abstracts of the American Dairy Science and Society of Animal Science.
Multitrait evaluation for calving ease and stillbirth with separate genetic effects by parity - (Abstract Only)
Wiggans, G.R., Cole, J.B., Thornton, L.L. 2007. Multitrait evaluation for calving ease and stillbirth with separate genetic effects by parity. Journal of Dairy Science. 90(Suppl. 1):19(abstr. M49).
Harnessing Automatic Data Collection to Enhance Genetic Improvement Programs - (Abstract Only)
Wiggans, G.R. 2007. Harnessing Automatic Data Collection to Enhance Genetic Improvement Programs. Journal of Dairy Science. 90(Suppl. 1):377(abstr. 422).
Stillbirth (C0)variance Components for a Sire-Maternal Grandsire Threshold Model and Development of a Calving Ability Index for Sire Selection - (Peer Reviewed Journal)
Cole, J.B., Wiggans, G.R., Van Raden, P.M., Miller, R.H. 2007. Stillbirth (co)variance components for a sire-maternal grandsire threshold model and development of a calving ability index for sire selection. Journal of Dairy Science. 90(5):2489-2496.
Genetic Evaluations for Mixed-Breed Populations - (Peer Reviewed Journal)
Van Raden, P.M., Tooker, M.E., Cole, J.B., Wiggans, G.R., Megonigal Jr, J.H. 2007. Genetic Evaluations for Mixed-Breed Populations. Journal of Dairy Science. 90(5):2434-2441.
Monitoring Goat and Sheep Milk Somatic Cell Counts - (Peer Reviewed Journal)
Paape, M.J., Wiggans, G.R., Bannerman, D.D., Thomas, D.L., Sanders, A.H., Contreras, A., Moroni, P., Miller, R.H. 2007. Monitoring goat and sheep milk somatic cell counts. Small Ruminant Research. 68(1-2):114-125.
Genetic Evaluation of Stillbirth in United States Holsteins Using a Sire-Maternal Grandsire Threshold Model - (Peer Reviewed Journal)
Cole, J.B., Wiggans, G.R., Van Raden, P.M. 2007. Genetic evaluation of stillbirth in United States Holsteins using a sire-maternal grandsire threshold model. Journal of Dairy Science. 90(5):2480-2488.
Short Communication: Genetic Evaluation of Milking Speed for Brown Swiss Dairy Cattle in the United States - (Peer Reviewed Journal)
Wiggans, G.R., Thornton, L.L., Neitzel, R., Gengler, N. 2007. Short Communication: Genetic evaluation of milking speed for Brown Swiss dairy cattle in the United States. Journal of Dairy Science. 90(2):1021-1023.
Genetic Parameters and Evaluation of Rear Legs (Rear View) for Brown Swiss and Guernseys - (Peer Reviewed Journal)
Wiggans, G.R., Thornton, L.L., Neitzel, R.R., Gengler, N. 2006. Genetic parameters and evaluation of rear legs (rear view) for Brown Swiss and Guernseys. Journal of Dairy Science. 89(12):4895-4900.
Characterization of Holstein Heifer Fertility in the United States - (Peer Reviewed Journal)
Kuhn, M.T., Hutchison, J.L., Wiggans, G.R. 2006. Characterization of Holstein heifer fertility in the United States. Journal of Dairy Science. 89(12):4907-4920.
Genetic Correlations Between First and Later Parity Calving Ease in a Sire-Maternal Grandsire Model - (Proceedings)
Wiggans, G.R., Van Tassell, C.P., Cole, J.B., Thornton, L.L. 2006. Genetic correlations between first and later parity calving ease in a sire-maternal grandsire model. 8th World Congress of Genetics Applied in Livestock Production. Communication 01-92.
Impact on Calving Ease Evaluations of Modifying Or Excluding Data from Herd-Years with Abnormal Distributions of Scores - (Proceedings)
Van Tassell, C.P., Wiggans, G.R. 2006. Impact on calving ease evaluations of modifying or excluding data from herd-years with abnormal distributions of scores. 8th World Congress of Genetics Applied in Livestock Production. Communication 01-88.
Genetic Evaluation of Stillbirth in United States Holsteins Using a Sire-Maternal Grandsire Threshold Model - (Proceedings)
Cole, J.B., Wiggans, G.R., Van Raden, P.M. 2006. Genetic evaluation of stillbirth in United States Holsteins using a sire-maternal grandsire threshold model. 8th World Congress of Genetics Applied in Livestock Production. Communication 01-28.
Genetic Calving Ease Study on Crossbreds - (Popular Publication)
Cole, J.B., Goodling, R.C., Wiggans, G.R., Van Raden, P.M. 2006. Genetic calving ease study on crossbreds. Jersey Journal. 53(3):83-84.
Genetic Evaluation of Milking Speed for Brown Swiss Dairy Cattle - (Abstract Only)
Wiggans, G.R., Thornton, L.L., Neitzel, R.R. 2006. Genetic evaluation of milking speed for Brown Swiss dairy cattle [abstract]. Journal of Dairy Science. 89(Suppl. 1):248(abstr. 259).
Genetic Parameters for Rear Legs/rear View in Brown Swiss Cattle - (Abstract Only)
Wiggans, G.R., Thornton, L.L., Neitzel, R.R. 2006. Genetic parameters for rear legs/rear view in Brown Swiss cattle. Journal of Dairy Science. 89(Suppl. 1):274(abstr. 341).
Stillbirth (Co)variance Components for a Sire-Maternal Grandsire Threshold Model - (Abstract Only)
Cole, J.B., Wiggans, G.R., Van Raden, P.M., Miller, R.H. 2006. Stillbirth (co)variance components for a sire-maternal grandsire threshold model [abstract]. Journal of Dairy Science. 89(Suppl. 1):273(abstr. 339).
Genetic Evaluations for Mixed Breed Populations - (Abstract Only)
Van Raden, P.M., Tooker, M.E., Cole, J.B., Wiggans, G.R., Megonigal Jr, J.H. 2006. Genetic evaluations for mixed breed populations [abstract]. Journal of Dairy Science. 89(Suppl. 1):98(abstr. 40).
Accounting for Heterogeneous Variances in Multi-Trait Evaluation of Jersey Type Traits - (Peer Reviewed Journal)
Gengler, N., Wiggans, G.R., Thornton, L.L., Wright, J.R., Druet, T. 2006. Accounting for heterogeneous variances in multi-trait evaluation of Jersey type traits. Journal of Dairy Science. 89(8):3143-3151.
Effect of Year, Stage of Lactation, Parity, Breed and Region on Goat Milk Somatic Cell Counts - (Proceedings)
Paape, M.J., Wiggans, G.R., Bannerman, D.D., Thomas, D.L., Sanders, A., Contreas, A., Moroni, P., Miller, R.D. 2006. Effect of Tear, Stage of Lactation, Parity, Breed and Region on Goat Milk Somatic Cell Counts. National Mastitis Council (NMC) 45th Annual Meeting Proceedings. pp. 256-257.
Adjustment for Heterogeneous Covariance Due to Herd Milk Yield by Transformation of Test-Day Random Regressions - (Peer Reviewed Journal)
Gengler, N., Wiggans, G.R., Gillon, A. 2005. Adjustment for heterogeneous covariance due to herd milk yield by transformation of test-day random regressions. Journal of Dairy Science. 88(8):2981-2990.
Accounting for Heterogeneous Variances in Multi-Trait Evaluation of Jersey Type Traits - (Abstract Only)
Gengler, N., Wiggans, G.R., Thornton, L.L., Wright, J.R., Druet, T. 2005. Accounting for heterogeneous variances in multi-trait evaluation of Jersey type traits [abstract]. Journal of Dairy Science. 88(Suppl. 1):11.
Reproduction Data in USDA Database - (Abstract Only)
Wiggans, G.R. 2005. Reproduction data in USDA database [abstract]. Journal of Dairy Science. 88(Suppl. 1):354.
Accounting for Pregnancy Diagnosis in Predicting Days Open - (Peer Reviewed Journal)
Wiggans, G.R., Goodling, Jr, R.C. 2005. Accounting for pregnancy diagnosis in predicting days open. Journal of Dairy Science. 88(5):1873-1877.
Genetic Evaluation of Calving Ease for Brown Swiss and Jersey Bulls from Purebred and Crossbred Calvings - (Peer Reviewed Journal)
Cole, J.B., Goodling Jr, R.C., Wiggans, G.R., Van Raden, P.M. 2005. Genetic evaluation of calving ease for Brown Swiss and Jersey bulls from purebred and crossbred calvings. Journal of Dairy Science. 88(4):1529-1539.
Type Trait (Co)variance Components for Five Dairy Breeds - (Peer Reviewed Journal)
Wiggans, G.R., Gengler, N., Wright, J.R. 2004. Type trait (co)variance components for five dairy breeds. Journal of Dairy Science.87(7):2324-2330.
Accounting for Differences in Rate of Maturity in Yield Evaluations - (Abstract Only)
Wiggans, G.R., VanRaden, P.M. 2004. Accounting for differences in rate of maturity in yield evaluations [abstract]. Journal of Dairy Science. 87(Suppl. 1):412.
Impact on Calving Ease Evaluations of Excluding Herds with Abnormal Distribution of Scores - (Abstract Only)
Van Tassell, C.P., Wiggans, G.R., Thornton, L.L.M. 2004. Impact on calving ease evaluations of excluding herds with abnormal distribution of scores [abstract]. Journal of Dairy Science. 87(Suppl. 1):84-85.
Development of a National Genetic Evaluation for Cow Fertility - (Peer Reviewed Journal)
Van Raden, P.M., Sanders, A.H., Tooker, M.E., Miller, R.H., Norman, H.D., Kuhn, M.T., Wiggans, G.R. 2004. Development of a national genetic evaluation for cow fertility. Journal of Dairy Science. 87(7):2285-2292.
Estimated Heterogeneity of Phenotypic Variance of Test-Day Yield with a Structural Variance Model - (Peer Reviewed Journal)
Gengler, N., Wiggans, G.R., Gillon, A. 2004. Estimated heterogeneity of phenotypic variance of test-day yield with a structural variance model. Journal of Dairy Science. 87(6):1908-1916.
Relationships of Test-Day Somatic Cell Scores with Test-Day and Lactation Milk Yields - (Peer Reviewed Journal)
Miller, R.H., Norman, H.D., Wiggans, G.R., Wright, J.R. 2004. Relationships of test-day somatic cell scores with test-day and lactation milk yields. Journal of Dairy Science. 87(7):2299-2306.
Standardization of Lactation Records for Variance of Mendelian Sampling to Reduce Bias in Evaluations of Bull Dams - (Abstract Only) - (22-Jun-03)
Test-Day Milk Loss Associated with Elevated Test-Day Somatic Cell Score - (Abstract Only) - (22-Jun-03)
Quality of Data Included in Genetic Evaluations for Daughter Pregnancy Rate - (Abstract Only) - (22-Jun-03)
Implementation of a Sire-Maternal Grandsire Model for Evaluation of Calving Ease in the Us - (Peer Reviewed Journal)
Van Tassell, C.P., Wiggans, G.R., Misztal, I. 2003. Implementation of a sire-maternal grandsire model for evaluation of calving ease in the United States. Journal of Dairy Science. 86(10):3366-3373.
Within Herd Effects of Age at Test Day and Lactation Stage on Test-Day Yields - (Peer Reviewed Journal)
Bormann, J., Wiggans, G.R., Druet, T., Gengler, N. 2003. Within-herd effects of age at test day and lactation stage on test-day yields. Journal of Dairy Science. 86(11):3765-3774.
Detection and Adjustment of Abnormal Test-Day Yields - (Peer Reviewed Journal)
Wiggans, G.R., Van Raden, P.M., Philpot, J.C. 2003. DETECTION AND ADJUSTMENT OF ABNORMAL TEST-DAY YIELDS. Journal of Dairy Science. 86(8):2721-2724.
Calving Ease (Co)variance Components for a Sire-Maternal Grandsire Evaluation Model - (Peer Reviewed Journal)
Wiggans, G.R., Misztal, I. Van Tassell, C.R., 2003Calving ease (Co)variance components for a sire-maternal grandsire threshold model. J Dairy Sci. 6(5):1845-8.
USDA Dairy Goat Genetic Evaluation Program - Status and Plans - (Proceedings) - (18-Oct-02)
Comparison of Dystocia Evaluations from Sire and Sire-Maternal Grandsire Threshold Models - (Proceedings)
Wiggans, G.R., Van Tassell, C.P., Philpot, J.C., Misztal, I. Comparison of dystocia evaluations from sire and sire-maternal grandsire threshold models. World Congress of Genetics Applied in Livestock Production.
Enhancing Quality of Dystocia Data by Integration into a National Dairy Cattle Production Database - (Proceedings)
VAN TASSELL, C.P., WIGGANS, G.R. ENHANCING QUALITY OF DYSTOCIA DATA BY INTEGRATION INTO A NATIONAL DAIRY CATTLE PRODUCTION DATABASE. WORLD CONGRESS OF GENETICS APPLIED IN LIVESTOCK PRODUCTION. vol. 32, pp. 557-560. 2002.
Adjustment for Heterogeneous Genetic and Non-Genetic (Co)variance Structures on Test-Day Models Using a Transformation on Random Regression Effect Regressors - (Proceedings) - (26-May-02)
Detection and Adjustment of Abnormal Test-Day Yields - (Abstract Only) - (15-Apr-02)
Improvements in Dystocia National Genetic Evaluation System and Data Processing - (Abstract Only)
VAN TASSELL, C.P., WIGGANS, G.R., PHILPOT, J.C., MISZTAL, I. IMPROVEMENTS IN DYSTOCIA NATIONAL GENETIC EVALUATION SYSTEM AND DATA PROCESSING. JOURNAL OF DAIRY SCIENCE. vol. 85 (Suppl. 1), pp. 33.
Deriving Lactation Yields from Test-Day Yields Adjusted for Lactation Stage, Age, Pregnancy, and Herd Test Date - (Peer Reviewed Journal) - (21-Nov-01)
Genetic Selection: Evaluation and Methods - (Book / Chapter) - (13-Nov-01)
Estimating Effects of Permanent Environment, Lactation Stage, Age, and Pregnancy on Test-Day Yield - (Peer Reviewed Journal) - (07-Nov-01)
Heterogeneity in (C0)variance Structures of Test-Day Yields - (Proceedings) - (30-Aug-01)
Method to Establish Average Relationships among Holstein Bull Populations over Time - (Proceedings) - (24-Jul-01)
Modeling Extended Lactation Curves in Dairy Goats Using Grafted Polynomials - (Abstract Only) - (24-Jul-01)
Simultaneous Accounting for Heterogeneity of (Co)variance Components in Genetic Evaluation of Type Traits - (Abstract Only) - (24-Jul-01)
Variance of Effects of Lactation Stage Within Herd by Herd Yield - (Abstract Only) - (24-Jul-01)
Impact of Paternity Errors in Cow Identification on Genetic Evaluations Andinternational Comparisons - (Peer Reviewed Journal) - (06-Jun-01)
Heterogeneity of (Co)variance Components for Jersey Type Traits - (Peer Reviewed Journal) - (06-Jun-01)
Genetic Resources for Current and Future Development of Holstein-Friesian Dairy Cattle - (Proceedings) - (15-Mar-01)
Revised Methods to Compute Multitrait Productive Life - (Government Publication) - (31-Jan-01)
Genetic Evaluation of Yield and Type Traits of Dairy Goats in the United States - (Peer Reviewed Journal) - (03-Jan-01)
Indirect Estimation of (Co)variance Functions for Test-Day Yields During First and Second Lactations in the United States - (Peer Reviewed Journal) - (27-Nov-00)
Issues in Defining a Genetic Evaluation Model - (Proceedings) - (22-Oct-00)
Joint Estimation of Variances and Effects in the Us Jersey Type Evaluation System - (Proceedings) - (22-Oct-00)
Genetic Evaluation of Yield and Type Traits of Dairy Goats - (Abstract Only) - (26-Jul-00)
Estimation of Variance Components for Cow and Parity Effects from Test-Day Yields - (Abstract Only) - (26-Jul-00)
Collection, Validation, and Use of Test-Day Data for Genetic Evaluations - (Abstract Only) - (26-Jul-00)
Investigation of Differing Estimates of Genetic Trend for Milk Yield of Holsteins in the United States - (Abstract Only) - (26-Jul-00)
Effect of Adjustment for Herd Test Day on Repeatability and Heritability of 305-Day Milk, Fat, and Protein Yields - (Abstract Only) - (26-Jul-00)
Heterogeneity of (Co)variance Components for Jersey Type Traits - (Abstract Only) - (26-Jul-00)
Stability of Yield Evaluations for Holstein Bulls in Artificial Insemination Service - (Abstract Only) - (26-Jul-00)
Comparison of Genetic Evaluations of Culled and Surviving Cows - (Abstract Only) - (26-Jul-00)
Herd and State Means for Somatic Cell Count for Dairy Herd Improvement - (Peer Reviewed Journal) - (07-Jun-00)
State and National Standardized Lactation Averages by Breed for Cows Calving in 1998 - (Government Publication) - (16-May-00)
Multitrait Genetic Evaluation of Jersey Type with Integrated Accounting Forheterogenous (Co)variances - (Proceedings) - (14-May-00)
Use of Sequential Estimation of Regressions and Effects on Regressions to Solve Large Multitrait Test Day Models - (Peer Reviewed Journal) - (07-Jan-00)
Changes in Usda-Dhia Genetic Evaluations (November 1999) - (Government Publication) - (01-Nov-99)
A Genome Scan for Qtl Influencing Milk Production and Health Traits in Dairy Cattle - (Peer Reviewed Journal) - (15-Oct-99)
Genetic Evaluation of Dairy Goats for Yield and Type - (Government Publication) - (27-Aug-99)
Estimation of (Co)variance Functions of Test Day Yields in First and Later Lactations of United States Holstein Cows - (Proceedings) - (26-Aug-99)
Genetic Evaluation of Yield and Conformation Traits of Dairy Goats - (Abstract Only) - (27-Jul-99)
Use of the World Wide Web to Distribute Genetic Evaluation Information - (Abstract Only) - (27-Jul-99)
Development of Multitrait Evaluation for Linear Traits and Single-Trait Evaluation for Final Score of Six Dairy Cattle Breeds - (Abstract Only) - (27-Jul-99)
Strategies for Combining Test Day Evaluations into An Index for Lactation Performance - (Proceedings) - (20-Jun-99)
Herd and State Means for Somatic Cell Count in Dairy Herd Improvement - (Abstract Only) - (20-Jun-99)
State and National Standardized Lactation Averages by Breed for Cows Calving in 1997 - (Other) - (08-Jun-99)
Estimation of (Co)variance Function Coefficients for Test Day Yields with Aexpectation-Maximazation Restriced Maximum Likelihood Algorithm - (Peer Reviewed Journal) - (03-Jun-99)
Method R Estimates of Heritability for Milk, Fat, and Protein Yields of Us Dairy Cattle - (Peer Reviewed Journal) - (03-May-99)
Animal Model Genetic Evaluation of Type Traits for Five Dairy Cattle Breeds - (Peer Reviewed Journal) - (28-Apr-99)
Current and Planned Changes in Usda-Dhia Genetic Evaluations (May 1999) - (Government Publication) - (23-Apr-99)
Iterative Solution of Random Regression Models by Sequential Estimation of Regressions and Effects on Regressions - (Proceedings) - (18-Mar-99)
Genetic Improvement of Dairy Cattle - (Book / Chapter) - (15-Feb-99)
Changes in Usda-Dhia Genetic Evaluations (February 1999) - (Government Publication) - (01-Feb-99)
National Survey of Herd Average Somatic Cell Counts on Dhi Test Days - (Book / Chapter) - (15-Dec-98)
Changes in Usda-Dhia Genetic Evaluations (November 1998) - (Government Publication) - (23-Nov-98)
Use of (Co)variance Functions to Describe (Co)variances for Test Day Yield - (Peer Reviewed Journal) - (05-Sep-98)
Estimation of (Co)variances of Test Day Yields for First Lactation Holsteins in the United States - (Peer Reviewed Journal) - (04-Sep-98)
Equity of Elite Cow Status Across States - (Peer Reviewed Journal) - (09-Jun-98)
Changes in Usda-Dhia Genetic Evaluations (May 1998) - (Government Publication) - (26-May-98)
What's Changing in Genetic Evaluations ... Data, Model, Dissemination - (Proceedings) - (29-Mar-98)
Use of Linear Type and Production Data to Supplement Early Predicted Transmitting Abilities for Productive Life - (Peer Reviewed Journal) - (19-Feb-98)
Changes in Usda-Dhia Genetic Evaluations (February 1998) - (Government Publication) - (09-Feb-98)
Current Status of Genetic Evaluation of Somatic Cell Scores for Us Dairy Cattle - (Proceedings) - (11-Jan-98)
Validation of Data and Review of Results from Genetic Evaluation Systems for Us Beef and Dairy Cattle - (Proceedings) - (11-Jan-98)
Detection and Analysis of a Locus Affecting Milk Concentration in the Us and Israeli Dairy Cattle Populations - (Proceedings) - (11-Jan-98)
Genetic Evaluations in the United States: Present Method and Proposed Changes - (Proceedings) - (29-Sep-97)
Genetic Evaluations in the United States: Present Method and Proposed Changes - (Abstract Only) - (05-Sep-97)
Estimation of Heritability for Yield of U.S. Dairy Cattle - (Proceedings) - (05-Sep-97)
Estimation of (Co)variance Components of Test Day Yields for U.S. Holsteins - (Proceedings) - (05-Sep-97)
Changes in Usda-Dhia Genetic Evaluations (August 1997) - (Government Publication) - (11-Aug-97)
Collection and Management of Test Day Data in the United States - (Abstract Only) - (01-Jun-97)
Method R Estimates of Heritability for Milk, Fat, and Protein Yields from First Lactations of Dairy Cattle - (Abstract Only) - (01-Jun-97)
Equity of Elite Cow Status Across States - (Abstract Only) - (01-Jun-97)
Genetic Benefits from More Frequent National Bull Evaluations - (Abstract Only) - (01-Jun-97)
Properties of Owner-Sampler and Other Records Formerly Excluded from National Genetic Evaluations - (Abstract Only) - (01-Jun-97)
Changes in Usda-Dhia Genetic Evaluations (May 1997) - (Government Publication) - (10-May-97)
Application of Canonical Transformation with Missing Values to Multitrait Evaluation of Jersey Type - (Peer Reviewed Journal) - (09-Apr-97)
Consistency of International Genetic Evaluations of Holstein Bulls - (Peer Reviewed Journal) - (20-Mar-97)
Relationship Between United States and Canadian Genetic Evaluations of Longevity and Somatic Cell Score - (Peer Reviewed Journal) - (24-Feb-97)
A Test Day Model for Genetic Evaluation of Yield Traits: Possible Benefits and An Approach for Implementation - (Peer Reviewed Journal) - (10-Feb-97)
Estimation of (Co)variance Components for Jersey Type Traits Using a Repeatability Model - (Peer Reviewed Journal) - (04-Feb-97)
Changes in Usda-Dhia Genetic Evaluations (February 1997) - (Government Publication) - (01-Feb-97)
Multitrait Parameter Estimation for the National Dairy Cattle Population Using Large Data Sets - (Proceedings) - (01-Feb-97)
Detection of Economic Trait Loci in the Us and Israeli Holstein Populationswith the Aid of DNA Microsatellites - (Proceedings) - (11-Jan-97)
Standardization of Marker Informativeness Measures for Different Gene Mapping Designs - (Proceedings) - (11-Jan-97)
Relation of Yield Early in Lactation and Days Open During Current Lactationwith 305-Day Yield - (Peer Reviewed Journal) - (03-Oct-96)
Detection of Quantitative Trait Loci with the Aid of Genetic Markes, the Problem of Multiple Comparisons - (Proceedings) - (01-Oct-96)
Variance Component Estimation and Multitrait Genetic Evaluation for Type Traits of Dairy Goats - (Peer Reviewed Journal) - (20-Aug-96)
Changes in Usda-Dhia Genetic Evaluations (July 1996) - (Government Publication) - (18-Jul-96)
Influence of Somatic Cell Score on Subsequent Test-Day Milk Yield - (Abstract Only) - (24-Jun-96)
Stability of International Dairy Bull Evaluations - (Proceedings) - (23-Jun-96)
Application of a Canonical Transformation with Missing Values to Multitrait Analysis of U.S. Jersey Type Data - (Proceedings) - (23-Jun-96)
A Computationally Feasible Test Day Model with Separate First and Later Lactation Genetic Effects - (Proceedings) - (06-Jun-96)
A Test-Day Model for Genetic Evaluation of Yield Traits: Possible Benefitsand An Approach for Implementation - (Abstract Only) - (25-Mar-96)
Changes in Usda-Dhia Genetic Evaluations (January 1996) - (Government Publication) - (19-Jan-96)
Application of a Canonical Transformation to Detection of Quantitative Trait Loci with the Aid of Genetic Markers in a Multi-Trait Experiment - (Peer Reviewed Journal) - (28-Oct-95)
A Computationally Feasible Test Day Model with Separate First and Later Lactation Genetic Effects - (Abstract Only) - (17-Oct-95)
Changes in Usda-Dhia Genetic Evaluations (July 1995) - (Government Publication) - (19-Jul-95)
Detection of Individual Loci Affecting Somatic Cell Concentration in the Usholstein Population with the Aid of DNA Microsatellites - (Proceedings) - (28-May-95)
Productive Life Evaluations Calculation Accuracy and Economic Value - (Peer Reviewed Journal) - (17-Oct-94)
Transformation of Measurements of Holstein White Coat Color Percentages and Estimation of Heritability - (Peer Reviewed Journal) - (11-Apr-94)
ARS News Articles
Last Modified: 10/25/2014
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