【摘要】 选择15头中国荷斯坦奶牛,随机分成三组,研究河北农区泌乳后期奶牛干物质及部分营养需求模型。结果表明:泌乳后期奶牛干物质采食量DM(kg)=0.0685W0.75+0.45(0.4×M+15×fat);所需产奶净能NE(LkJ)=376.45W0.75+3138×(0.4×M+15×fat)+ΔW×25100;可消化蛋白质DCP(g)=3.44W0.75+M×CP%/0.6+ΔW×325;各项指标略高于中国奶牛饲养标准(NY/T34-2004)。更多还原

【Abstract】 In order to study dry matter and nutritional requirement of late lacation dairy cows in the agricultural region of Hebei province,fifteen dairy cows were divided randonly into three groups.Results indicated that DM(kg)=0.068 5W0.75+0.45(0.4×M+15×fat);NEL(kJ)=376.45 W0.75+3 138×(0.4×M+15×fat)+ΔW×25 100;DCP(g)=3.44W0.75+M×CP%/0.6+ΔW×325.The requirement of DM,NEL,DCP increasted compared with feeding standard of dairy cattle(NY/T34-2004).更多还原