控释尿素对藏羊瘤胃氨氮和微生物蛋白质的影响

被引:5
作者
李林 [1 ]
薛白 [2 ]
机构
[1] 青海大学
[2] 青海省畜牧兽医科学院
关键词
粗蛋白质源; 瘤胃pH; 瘤胃氨氮浓度; 瘤胃微生物蛋白质;
D O I
暂无
中图分类号
S826 [羊];
学科分类号
摘要
作者旨在探讨控释尿素对藏羊瘤胃氨氮和微生物蛋白质合成的影响。试验选4只2岁藏羊,安装永久性瘤胃瘘管,分期定量饲喂不同粗蛋白质日粮:含尿素日粮(粗蛋白质含量为10.79%)、无尿素日粮(粗蛋白质含量为10.75%)、控释尿素日粮(粗蛋白质含量为10.73%)。结果表明,含尿素日粮瘤胃pH和氨氮浓度在一天中变化较快,而无尿素日粮和控释尿素日粮变化较为平缓,控释尿素日粮微生物蛋白质合成量虽然变化幅度较大,但能量与氨氮释放同步,微生物蛋白质合成量较大,充分把食用氮转化为微生物蛋白质。控释尿素日粮与含尿素日粮、无尿素日粮存在极显著差异(P<0.01),且控释尿素在瘤胃pH、氨氮浓度和微生物蛋白质含量方面均优于含尿素日粮和无尿素日粮,从而表明采用控释尿素日粮对藏羊补饲具有良好的效果,是反刍家畜安全、高效的粗蛋白质营养日粮。
引用
收藏
页码:19 / 21
页数:3
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