中国畜牧杂志2012，Vol.48Issue(23)：39-43,5.
限饲对辽宁绒山羊生产性能及消化代谢的影响
Effect of Feed Restriction on Growth Performance, Digestion and Metabolism in Liaoning Cashmere Goats
摘要
Abstract
This research was conducted to study the effects of feed restriction on growth performance, digestion and metabolism in Liaoning cashmere goats. Twenty female Liaoning cashmere goats (1 year old and 22.29±1.05 kg BW) were assigned randomly to four levels of dry matter intake, ad libitum and 90%, 80% or 70% of the ad libitum intake. The results indicated that there were significant effects on body weight(BW) and average daily gain(ADG) in cashmere goat (P<0.05) for different levels of feed restriction, with the decreasing feeding levels, ADG was 32.20, 17.40, 10.80 and-8.20 g/d respectively. The feed/gain was significantly influenced among all groups except Al and IR90(P>0.05); The apparent digestibilities of nutritents were not affected by feed restriction (P>0.05); Different levels of feed restriction can affect the N intake, N balance and N voided in faeces (P<0.05), but can t affect N excretion in urine and utilization of N (P>0.05), N balance was 3.05, 2.62, 1.87 and 1.18 g/d for group AL, IR90, IR80 and IR70 respectively. This experiment demonstrated that feed restriction significantly affected BW, ADG and N balance. The crude protein maintenance requirement of Liaoning cashmere goat growing ewe is 46.16 g/d, which is higher than the recommendation of NRC.关键词
限饲/生产性能/消化代谢/绒山羊Key words
feed restriction/ growth performance/ digestion and metabolism/ cashmere goats分类
农业科技引用本文复制引用
霍小东,贾志海,张微,李琴,任婉丽,张世伟,宋先忱,朱晓萍..限饲对辽宁绒山羊生产性能及消化代谢的影响[J].中国畜牧杂志,2012,48(23):39-43,5.基金项目
公益性行业(农业)科研专项(200903006-01) （农业）
国家绒毛用羊产业技术体系(nycytx-40-09) （nycytx-40-09）
辽宁绒山羊新品系规范化养殖技术集成与产业化开发体系建设示范(2009BADA5B04) （2009BADA5B04）
