BMY公牛对不同能量蛋白比日粮的消化代谢试验  

Digestion Metabolize Experimental on Different Ratio of Energy and Protein Dait for BMY Bulls

作　　者：王安奎[1] 金显栋[1] 付美芬[1] 刘建勇[1] 杨国荣[1] 

机构地区：[1]云南省草地动物科学研究院,云南昆明650212

出　　处：《中国牛业科学》2010年第6期44-47,共4页China Cattle Science

基　　金：云南省科技厅(2007C241M和2008LA018);云南省技术创新人才培养计划

摘　　要：[目的]为了研究12月龄BMY公犊牛对不同日粮中各营养成分的代谢情况。[方法]采用12月龄BMY公犊9头,分成3组,分别饲喂低能低蛋、中能中蛋和高能高蛋比日粮。[结果]日粮中DM、N、ADF和NDF的表观消化率随着日粮中能量蛋白比水平的提高而增加,其中,三个试验组间DM和N的表观消化率之间无显著性差异(P>0.05),但低能量蛋白比日粮组的N表观存留率、ADF和NDF的表观消化率显著低于中、高两个试验组(P<0.05),而中和高蛋白能量比日粮组N的表观存留率、ADF和NDF的表观消化率之间无显著性差异(P>0.05)。【Objective】The purpose was to study the digesting metabolism of different ratio of energy and protein diet for 12 month aged BMY bulls.【Method】9 BMY bulls of 12 month age were selected and divided into 3 groups which fed low N P,medium N P and high N P ratios.【Result】The result showed that the apparent digest rate of DM,N,ADF and NDF increased with the improvement of the ration of energy and protein in diet.There were no difference on the apparent digest rate of DM and N between the 3 treatments（P0.05）.But the apparent exist rate of N,the apparent digest rate of ADF and NDF in low energy/protein ratio were remarkablely lower（P0.05） than that of medium and higher treatment group and there were no difference（P0.05） with the medium and higher treatment groups.

关 键 词：BMY公牛 能量蛋白 消化代谢 

分 类 号：S823.4[农业科学—畜牧学]