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ARS Home » Southeast Area » Mississippi State, Mississippi » Crop Science Research Laboratory » Genetics and Sustainable Agriculture Research » Research » Publications at this Location » Publication #357297
Title: Cholesterol, yield, tibia and clavicle ash of broilers fed high available Phosphorus corn and/or Phytase with/without Alum litter treatment

Author
item Miles, Dana
item Moore, Philip
item Brooks, John
item Smith, Douglas
item STILBORN, HEATHER - Devenish Nutrition
item RICE, DAVID - Critereon
item Branton, Scott

Submitted to: International Journal of Poultry Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/26/2019
Publication Date: 6/15/2019
Citation: Miles, D.M., Moore Jr, P.A., Brooks, J.P., Smith, D.R., Stilborn, H.L., Rice, D.W., Branton, S.L. 2019. Cholesterol, yield, tibia and clavicle ash of broilers fed high available Phosphorus corn and/or Phytase with/without Alum litter treatment. International Journal of Poultry Science. 18(7)349-352.

Interpretive Summary: Three pen trials were conducted to assess the effects of the source of dietary phosphorus on cholesterol, tibia and clavicle ash, and yield in broilers raised on litter with and without alum. The diets were yellow dent corn (YDC), high available phosphorus/low phytate corn (HAPC), YDC + phytase (PHYT), and a combination diet of HAPC and PHYT (H&P). Overall, there were no differences in breast cholesterol, thigh cholesterol, or yield when comparing alum vs. no alum litter treatment. In addition, breast tissue cholesterol was not affected by diet. For thigh cholesterol, HAPC was least when a difference was detected. The only differences in meat yield were in Trial 1, where the greatest was PHYT and YDC at 71.55% and 71.26%, respectively. HAPC had the lowest yield at 70.43%. The meat yield for H&P appeared similar to the other diets (71.02%). Tibia ash only exhibited some differences in trial 2. For the alum treated pens at 6 weeks of age, HAPC had the greatest tibia ash; all other diets had lower tibia ash. Clavicle ash was not affected by diet or alum use. In the previous work, alum addition reduced water soluble P for all diets, but only H&P did so where alum was not added. The work demonstrates that the combination diet, H&P, shows promise for sustainable broiler production by maintaining comparable cholesterol and meat yield as well as reducing excretion of water soluble P.

Technical Abstract: Three pen trials were conducted to assess the effects of the source of dietary P on cholesterol, tibia and clavicle ash, and yield in broilers raised on litter with and without alum addition. These supplement a previous report on the main effect of alum addition to litter on the form of P in litter. A 2x2 factorial structure was used for the diets (subunit treatments) that included high available phosphorus/low phytate corn (HAPC) and phytase (PHYT). Overall, there did not appear to be differences in breast cholesterol, thigh cholesterol, or yield when comparing alum vs. no alum litter treatment. In addition, breast tissue cholesterol was not affected by diet. For thigh cholesterol, HAPC was least when a difference was detected. The only differences in meat yield were in Trial 1, where the greatest was PHYT and yellow dent corn (YDC) at 71.55% and 71.26%, respectively. HAPC had the lowest yield at 70.43%. The meat yield for the combination diet of HAPC and PHYT (H&P) did not appear different than any of the other diets (71.02%). Tibia ash only exhibited some differences in trial 2. For the alum treated pens at 6 weeks of age, HAPC had the greatest tibia ash with lower ash apparent for the other diets. Clavicle ash was only assessed in trial 2 and did not appear different among the treatments. In the previous work, alum addition reduced water soluble P for all diets, but only H&P did so where alum was not added. In this report, marginally, HAPC had least cholesterol and greatest tibia ash, but the lowest yield. The work demonstrates that the combination diet, H&P, shows promise for sustainable broiler production by maintaining comparable cholesterol and meat yield as well as reducing excretion of water soluble P.