摘要
选用12只安装永久性瘤胃瘘管的杂一代羯羊,随机分成3组,研究日粮中不同小黑麦干草添加水平(10%、25%、40%)对肉羊消化代谢和粗饲料瘤胃降解的影响。结果表明:40%组日粮采食量显著低于其他各组(P<0.01)。日粮营养物质表观消化率、沉积氮量、沉积氮/进食氮各组间虽差异不显著(P>0.05),但10%组绝对值最低。25%组进食氮和可消化氮量最高,且分别与10%组达极显著差异(P<0.01)和显著差异(P<0.05)。粗饲料瘤胃降解率各组间差异不显著(P>0.05)。肉羊日粮中小黑麦干草的适宜添加水平为25%。
Twelve wethers with permanent rumen fistula were allotted randomly to three groups to study the effect of different triticale hay levels （10%, 25%, 40% of diet） on nutrient digestibility, metabolism and roughage degradation in sheep. The result showed that ①Feed intake at 40% addition level was significantly decreased compared with other treatments（P〈 0.01）. ②Though there was no difference in nutrient digestibility, amount of retained N or RN / NI among the treatments （P〉 0.05 ）, the numerical value at 10% addition level was lowest. Intake of N and amount of digestible N at 25% addition level were higher than those of other treatments. There was significant difference in intake of N （P 〈 0.01） between 25% and 10% addition level, and in amount of digestible N between these two treatments （P 〈 0.05）. ③ There was no difference in roughage degradation among the treatments （P 〉 0.05）. ④The suitable level of triticale hay addition in the diet of sheep was 25%.
出处
《中国畜牧杂志》
CAS
北大核心
2006年第19期38-40,共3页
Chinese Journal of Animal Science
基金
国家高技术发展计划资助项目(2002AA241181)
关键词
畜牧学
小黑麦千草
添加水平
肉羊
animal science
triticale hay
addition level
sheep
作者简介
张婵娟（1981-），女，硕士
通讯作者
