稻草补饲不同水平苜蓿对山羊能量消化代谢的组合效应研究  

The Study on the Associative Effects of Rice Straw Basic Diet Supplemented with Varying Level of Alfalfa Hay on Digestion and Metabolism of Energy in Goats

作　　者：张吉鹍[1,2] 张震宇 李龙瑞[2] 吴玲 邹庆华[1,2] 

机构地区：[1]江西省农业科学院畜牧兽医研究所,南昌330200 [2]江西新天地药业有限公司兽药研究院,峡江331400 [3]内蒙古农业大学动物科学学院,呼和浩特010020

出　　处：《中国奶牛》2014年第8期8-12,共5页China Dairy Cattle

基　　金：国家自然科学基金(31060313)项目资助

摘　　要：将9只体况良好、体重相近的成都麻羊半同胞羯羊,随机分成3组,饲以稻草基础日粮,分别补饲25%(MSL25)、50%(MSL50)与75%(MSL75)的苜蓿(MSL),采用单因子试验设计,研究稻草补饲苜蓿对山羊能量消化代谢的影响。结果:总能(GE)的消化率与代谢率自高到低的排序均为MSL75>MSL50>MSL25,其相应值分别为58.92%、54.48%与51.12%,48.42%、44.87%与41.85%,除MSL75与MSL25外(P<0.05),其余组间差异不显著(P>0.05)。消化能(DE)转化为代谢能(ME)的效率自高到低排序为MSL50(82.36%)>MSL75(82.18%)>MSL25(81.86%),组间差异不显著(P>0.05)。说明山羊稻草基础日粮补饲50%?MSL的能量利用效率最佳,表现出明显的组合效应。Nine healthy Chengdu Ma wether Goats from sire half-sib with similar age and weight were divided into three groups randomly and fed with the rice straw （RS） basic diets supplemented with 25% （MSL25）, 50% （MSL50） and 75% （MSL75） alfalfa hay （Medicago sativa Linn, MSL） respectively for determining the digestion and metabolism of energy in trial goats. The results showed that the GE digestibility for the 3 mixed forages ranked from greatest to least in the following： MSL75 （58.92%1） 〉 MSL50 （54.48%） 〉 MSL25 （51.12%）, and the GE metabolism ranked in the same order as that of GE digestibility：MSL75 （48.42%） 〉 MSL50 （44.87%） 〉 MSL25 （41.85%）, there was no significant difference （P〉0.05） between MSL50 and MSL75, MSL25 except for MSL25 and MSL75 （P 〈 0.05） for both GE digestibility and its metabolism. The conversion efficiency of DE to ME for the 3 mixed forages ranked from greatest to least in the following： MSL50 （82.36%） 〉MSL75 （82.18%） 〉MSL25 （81.86%） （P 〉 0.05）. It was concluded that the associative effects on energy efficiency of goat fed RS supplemented with the 50% of MSL were apparent.

关 键 词：稻草 补饲苜蓿 能量 消化代谢 组合效应 

分 类 号：S823.4[农业科学—畜牧学]