RPLM对泌乳后期奶牛血液代谢物、产乳量和乳成分的影响  

Effect of Rumen Protected Lys + Met on Blood Metabolism,Milk Yield and Composition in Lactating Dairy Cows

作　　者：吐日根白乙拉 苏德斯琴 奥丽格日玛[1] 板桥久雄 

机构地区：[1]内蒙古农业大学动科院,呼和浩特市010018 [2]锡林郭勒盟家畜改良站 [3]东京农工大学农学部

出　　处：《中国草食动物》2004年第1期3-5,共3页China Herbivores

摘　　要：选用 8头经产荷斯坦种乳牛 ,分为对照和瘤胃保护赖氨酸 +蛋氨酸 (RPLM )组 ,以二乘反转法 ,研究了RPLM对泌乳后期奶牛瘤胃发酵、血液指标、产乳量和乳成分的影响。对照日粮中添加 10 0 g/d保护材料 ,RPLM组日粮中添加 10 0g/d含Lys 11 6g、Met 4 7g的保护制品。RPLM组与对照组比较 ,血浆游离Lys、Met浓度略有增加 (P >0 1) ,血浆葡萄糖浓度有增加趋势 (P <0 1) ,干物质采食量无明显变化 ,乳量和 4%的标准乳量分别增加 0 5kg/d(2 2 %)和 0 8kg/d(3 5 %) ,乳蛋白率、乳脂率和乳糖率均略高于对照组 (0 0 1%0 0 6%) ,乳蛋白质和乳脂肪生产量分别增加 2 0g/d和 40 g/d ,饲料蛋白质转化为乳蛋白质的效率提高5 9%,但均无明显差异 (P >0 1)。以上结果表明 :泌乳后期奶牛日粮中添加瘤胃保护赖氨酸和蛋氨酸 ,没有明显地提高产乳量和改善乳成分的效果。The cows of RPLM group were supplied with 100 g/d RPLM products which contained Lys 11.6 g and Met 4.7 g,cows of control group were supplied with 100 g/d rumen protectial material.The results indicated that dry matter intake unchanged with cows fed RPLM.The concentration of free Lys and Met in blood plasma for RPLM croup was higher than control group( P >0.1),and the concentration of glucose in blood plasma tend to increase for cows fed RPLM( P <0.1).Daily production of milk,4%fetcorrected milk,milk protein and milk fat increased by 0.5 kg/d(2.2%),0.8 kg/d(3.5%),20 g/d and 40 g/d respectively( P >0.1),Percentages of Milk protein,milk fat,lactose and solids-not-fat of RPLM group were a little higher than those of control group( P >0.1).The efficiency of feed protein to milk protein increased by 5.9%( P >0.1),for cows supplied RPLM.

关 键 词：RPLM 泌乳后期 奶牛 血液代谢物 产乳量 乳成分 

分 类 号：S823.91[农业科学—畜牧学]