| 瘤胃保护性色氨酸对肉羊氮代谢及生长性能的影响 |
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| 引用本文： | 刘君,耿忠诚,马慧,宋伟红.瘤胃保护性色氨酸对肉羊氮代谢及生长性能的影响[J].饲料与畜牧,2010(1). |
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| 作者姓名： | 刘君 耿忠诚 马慧 宋伟红 |
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| 作者单位： | 黑龙江八一农垦大学动物科技学院;中国农业大学动物科技学院;黑龙江省农垦科学院; |
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| 摘 要： | 试验选用20只三月龄断奶二元杂交肉羊,采用随机区组试验设计,探讨瘤胃保护性色氨酸对肉羊氮代谢及生长性能的影响。瘤胃保护性色氨酸设四个添加水平,即0g/d、1.0g/d、2.0g/d和4.0g/d。结果表明,日粮中添加瘤胃保护性色氨酸能降低尿氮的排出量,提高氮沉积、日增重和氮的生物学利用率(P0.05),但1.0g/d、2.0g/d和4.0g/d三个处理组之间比较差异不显著(P0.05),在此试验条件下,日粮中瘤胃保护性色氨酸的适宜添加量为1.0g/d。
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| 关 键 词： | 瘤胃保护性色氨酸 肉羊 氮代谢 生长性能 |
Effect of rumen-protected tryptophan on nitrogen metabolism and production performance in lambs |
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| Authors: | Liu Jun Ma Hui Geng Zhong-Cheng Song Wei-Hong |
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| Abstract: | 27 newly weaned three-month old cross-breed lambs were used to study the effect of rumen-protected Tryptophan on nitrogen metabolism and production performance in lambs.The goats were randomly assigned to four treatments:0g/d,1.0g/d,2.0g/d or 4.0g/d rumen-protected Tryptophan added to the concentrate diet.The results showed that rumen-protected Tryptophan supplementation decreased(P<0.05) urinary nitrogen excretion and increased(P<0.05) nitrogen retention,average daily gain(ADG) and the nitrogen biological ... |
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| Keywords: | rumen-protected Tryptophan lambs nitrogen metabolism production performance |
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