新疆农业科学2013，Vol.50Issue(1)：158-163,6.DOI:10.6048/j.issn.1001-4330.2013.01.026
不同月龄荷斯坦奶公犊肉品质的比较研究
Comparative Study on Beef Quality of Holstein Dairy Bull Calf of Different Month Ages
摘要
Abstract
[ Objective] The purpose of this project was to explore the internal quality of the Holstein dairy bull and provide reference for solving the shortage of beef sources and accelerate Meat - Type of cow by conducting comparative study on the beef quality of Holstein dairy bull of different month old. [ Method ] Holstein dairy bull calves of 10,12,18 month age and culling cows were slaughtered in the same nutrition model. The right side muscle of the Carcass was taken back as meat sample. Sense organ, physiochemical and machining indexes of the beef quality were detected. [Result]The dry material, crude protein, crude fat, water losing rate .water retention capacity, cooking percentage of 12 month age Holstein dairy bull were 23.12% , 18.75% ,4. 28% ,21. 05% ,72. 62% ,64. 48% ; 15 month age were 23. 94% , 19. 22% ,8. 11% , 20.96% ,72.44% ,62.21% ;18 month age were 26. 30% ,20.14% ,10.04% ,22. 34% ,69.69% ,61. 52% ; and the culling were 25. 07% , 19. 31% ,11. 54% ,25. 03% ,67. 03% ,59. 50%. The beef color, marbling, tenderness of 18 month age Holstein dairy bull calves were better than those of the other three periods, the content and composition of amino acid were in an ideal situation, however, the contents of 18 free amino acids displayed the dynamic changes in each period. [ Conclusion ] Significant changes appeared in the various indexes of every period with the increasing month age except the ash and pH value. Given all the indexes, the beef quality of Holstein dairy bull calves of 18 month age is the best.关键词
荷斯坦奶公犊/不同月龄/肉品质Key words
Holstein dairy bull calf/different month ages/beef quality分类
农业科技引用本文复制引用
胡猛,张文举,尹君亮,陈宁,张云峰..不同月龄荷斯坦奶公犊肉品质的比较研究[J].新疆农业科学,2013,50(1):158-163,6.基金项目
科技部农业科技成果转化重大项目(2011GB2G410001) （2011GB2G410001）
