摘要
以安装永久性瘤胃瘘管的本地山羊为试验动物 ,分别测定了豆科牧草红三叶、紫花苜蓿及禾本科牧草冬牧 70黑麦 (不同生长期 )的干物质 (DM )、粗蛋白 (CP)、中性洗涤纤维 (NDF)和酸性洗涤纤维 (ADF)的瘤胃降解率。结果表明 :①不同生长期的冬牧 70黑麦在相同培养时间段内 ,其DM、CP、NDF、ADF的降解率差异显著 (P <0 0 5) ,且孕穗期高于抽穗期。经 72小时培养后 ,孕穗期DM、CP、NDF、ADF的降解率分别比抽穗期高 17 88%、16 11 %、17 10 %、2 1 0 2 %。②在相同培养时间段内红三叶的DM降解率均高于紫花苜蓿 ,但CP的降解率却相反 ;培养刚开始 ,紫花苜蓿NDF、ADF的降解率均高于红三叶 ,随着时间的延长 ,其降解率均低于红三叶。③经 72小时培养后 ,豆科牧草的DM、CP、NDF、ADF降解率均明显高于抽穗期的冬牧 70黑麦 ,而接近于孕穗期的冬牧 70黑麦。进一步相关分析可知 ,各种牧草的NDF与CP。
WT6BZ]Nylon bag technology was used for the measurements of DM,CP,NDF and ADF of red clover alfalfa and W.G -70R ye of different growth period in three local goats with permanent rumen cannulas.The results showed that:1) In the same culture time,the degradability of DM,CP,NDF and ADF of W.G -70 Rye of different growth period were significantly different( P <0 05).After 72 hours ferment,the degradability of DM,CP,NDF and ADF of boot stage was higher than that of heading stage by 17 88%,16 11%,17 10%,21 02% respectively.2) The degradability of DM of red clover was higher than that of alfalfa .3) After 72h,the degradability of DM,CP,NDF and ADF of laguminose was higher than W.G -70R ye of boot stage.4) Correlation analysis showed that positive relationship existed in the degradability of between NDF,ADF and CP of plants. [WT6HZ]
出处
《中国草食动物》
2001年第3期12-15,共4页
China Herbivores
