Effect of acetylated soyabean peptides on rumen fermentation and nitrogen metabolism in sheep
The objective of this study was to determine the effect of acetylated peptides on rumen fermentation and nitrogen metabolism in sheep. Six adult Poll × Dorset crossbred sheep, fitted with permanent rumen and duodenal fistulas, were used in a replicated 3×3 Latin design experiment. Three basic diets, balanced to similar nitrogen intake, were supplemented with 100 g soyabean meal (SBM), 60 g soyabean peptides (SBP) or 80 g acetylated soyabean peptides (ASP), respectively. The crude protein of soyabean peptides and acetylated peptides powder were 66.8 and 51.0％. The degree of acetylation was 88.9％. Soyabean peptides had the highest rumen pH (6.94), followed by ASP and SBM (6.74 and 6.58; P<0.05). Ruminal ammonia was also affected by treatment (8.05 and 10.18 mg/dl for ASP and SBP, respectively; P<0.05). Blood urea nitrogen of the SBM diet showed a higher value compared with SBP and ASP (5.96, 4.14 and 2.90 mmol/1; P<0.05). Apparent nitrogen digestibility of ASP (73.51％) was significantly higher than that of SBM (62.85％; P<0.05).
acetylated peptides nitrogen metabolism sheep
Z.J.Cao S.L.Li Y.J.Wang M.Ma P.Chen
Stale Key Laboratory of Animal Nutrition, National Laboratory of Animal Science, China Agricultural University Beijing 100094, PR.China
国际会议
The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)
北京
英文
661-665
2007-09-16（万方平台首次上网日期，不代表论文的发表时间）