日粮蛋白质水平对不同品种山羊氮平衡和生产性能影响

被引：18

作者：

贾志海

安民

T．Sahlu

T．H．Teh

机构：

[1] 中国农业大学动物科技学院!北京,中国农业大学动物科技学院!北京,LangstonUniversity，U．S．A．,LangstonUniversity，U．S．A．

来源：

中国农业大学学报 | 1996年 / 03期

关键词：

粗蛋白质; 马海毛; 山羊绒; 氮平衡; 血液生化指标;

D O I：

暂无

中图分类号：

S827.5 [];

学科分类号：

090502 ;

摘要：

两种蛋白质水平日粮（分别为9％和16％）对16只山羊（8只绒山羊和8只安哥拉山羊）进行6周饲养试验和氮平衡试验。结果表明，干物质采食量和营养物质消化率两品种山羊相似，氮的存留及血液生化指标两品种间也无显著差异。山羊采食16％蛋白质水平日粮，干物质采食量和体重增长显著高于采食9％蛋白质水平日粮，氮的存留也显著增加（P＜0．01）；血液中生化指标除尿氮显著增加（P＜0．01），T3和T4含量减少（P＜0．01和P＜0．05）外，其他生化指标不同蛋白质水平日粮无显著差异。采食16％蛋白质水平日粮，安哥拉山羊马海毛纤维产量提高31．1％（P＜0．05）。随毛纤维产量增加，毛纤维长度和细度发生变化（P＜0．05）；绒山羊毛纤维总重、绒毛长度和细度不受日粮蛋白质水平影响，山羊绒生长不同于马海毛。

引用

页码：99 / 104

页数：6

共 11 条

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