麦秸+苜蓿型全混合日粮DCAB对绵羊营养物质消化代谢的影响  

Influence of Dietary Cation-Antion Balance on Digestive Metabolism of Sheep Fed a Wheat Stover and Alfalfa Based Diet

作　　者：刘太宇[1] 杨亮[1] 王艳玲[1] 石科[1] 何静卫[1] 

机构地区：[1]郑州牧业工程高等专科学校

出　　处：《中国草食动物》2008年第4期14-17,共4页China Herbivores

基　　金：河南省科技成果转化基金(082201120001);河南省重大科技攻关计划项目(0422011100)

摘　　要：试验采用3×3拉丁方试验设计,选用6只绵羊,通过饲养和消化试验来研究饲喂不同阴阳离子平衡的麦秸+苜蓿型全混合日粮对绵羊消化代谢的影响。结果表明:①B组(DCAB=15meq/100gDM)DM、NDF、ADF表观消化率均高于其他组(P<0.05)。②B组Ca表观消化率显著高于A组和C组(P<0.05),其他组间差异不显著(P>0.05);各组间P表观消化率差异不显著(P>0.05);C组Na表观存留率与A、B组之间差异显著(P<0.05),但B组表观吸收率明显高于A、C组,说明随着DCAB水平的升高,Na吸收率和存留率都有上升趋势;提高DCAB水平,对K在体内的吸收影响不明显;C组尿Cl排出量与A、B之间差异显著(P<0.05)。In a 3 × 3 Latin square design, 6 chosen sheep were divided into 3 groups. The influence of different level of dietary cation-anion balance（DCAB）to digestive metabolism of sheep fed a wheat stover based TMR diet was researched by feeding and digesting test. The results suggested that： （1）The DM digestibility, NDF digestibility, ADF digestibility of B were obviously higher than the other two groups A and C（P〈0.05）. （2）The Ca digestibility of B were significantly higher than A and C（P〈0.05）. There were not significant difference between other two groups（P〉0.05）. There were not significant influence on P digestibility（P〉0.05）. The Na digestibility of C is notably different with A and B, but B was obviously higher than A and C（P〈0.05）. As the level of DCAB increases,the Na digestibility and depositability has a raising tendency and the K digestibility was not influenced evidently. The amount of Cl discharge from urine of C was significantly different with A and B（P〈0. 05）.

关 键 词：消化代谢 麦秸 TMR 阴阳离子平衡 绵羊 

分 类 号：S826.1[农业科学—畜牧学]