Volume 6, Issue 2 (summer 2002)
jwss 2002, 6(2): 105-114 |
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M. Moalai, H. Nassiri moghaddam, H. Kermanshahi. Effects of Amino Acid Supplementation on Broiler Chicken Performance After Severe Early Feed Restriction. jwss 2002; 6 (2) :105-114
URL: http://jstnar.iut.ac.ir/article-1-176-en.html
URL: http://jstnar.iut.ac.ir/article-1-176-en.html
Abstract: (25074 Views)
An experiment was conducted to determine growth and carcass characteristics of male broilers subjected to early feed restriction. Restricted birds were fed equivalent to 1/5*BW0.67 Kcal/day/bird between days 7 and 14. On days 0 to 7 and 14 to 56, all chickens received feed ad-libitum. Diets of feed-restricted birds were supplemented with 15% higher methionin and cystine recommended by NRC (1994) during refeeding in starter and grower periods. No significant differences were observed for liver, breast, heart, carcass and liver fat between early restricted birds and ad-libitum control at 56 days of age. Body weight for restricted broilers were significantly (P<0.05) lower than that of controls in 56 days. However, restricted broilers had significantly lower total-feed to gain ratio than the unrestricted control. Restricted broilers that received diets high in total sulfur amino acids in starter and grower periods had singnificantly lower abdominal fat pad than control birds.
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