麦可利对黑白花奶牛产奶性能的影响研究

A Study on The Effect of Probiotic Cultuer on Milk Yield of Chinese Hostein Cows

本试验选用中国黑白花奶牛160头，随机分为4组。试验I组（对照组）饲喂基础日粮，Ⅱ组饲喂基础日粮＋益康XP100g／d．头，Ⅲ、Ⅳ组在基础日粮的基础上分别添加益生茵培养物（麦可利）100g／d．头、300g／d．头。试验结果表明：Ⅱ、In、1V组日产奶量分别高于I（对照组）2．23kg、2．48kg和3．19kg；4％的标准乳分别较对照组提高11．97％、15．06％和28．OI％，其中Ⅳ组达显著水平（P〈0．05），试验Ⅲ、Ⅳ组与Ⅱ组比较，试验Ⅲ组略高于Ⅱ组，提高2．76％，Ⅳ组比Ⅱ组提高14．32％；与对照组相比，试验组牛乳中的干物质、乳脂、蛋白质和乳糖的含量均有所改善，但未达显著水平（P〉0．05）；试验组与对照组相比经济效益有明显提高，试验Ⅲ、Ⅳ组与Ⅱ组比较，Ⅲ组经济效益提高效益5．58％，Ⅳ组达7．78％。

160 Chinese Holstein cows were divided into 4 groups, treatment groups II, III, IV （basic diet respectively contain Diamond XP＇ 100g/d per cow, Probiotic Culture （ Michael ） 100g/d per cow and 300g/d per cow ） and control group I （basic diet）. The result indicates： the day milk yield of II, III,IV groups are higher than I （ excess 2.23 kg, 2.48 kg and 3.19 kg） ;4% FCM of II, HI, IV groups are higher than I also（ increases 11.97%, 15.06% and 28. 01% ）, group IV vs I （ P 〈0.05）, group III is litde higher than II （ increase 2.76% ）, group IV vs I1 increases 14.32% ; the teatment groups＂ milk compositions of dry matter, milk fat,milk protein and lactose are better vs group I （ P 〉 0.05 ） ; the economic performance of teatment groups vs control has obviously increased, group III and IV vs II increased also （5.58% , 7. 78% ）.