微生物发酵蛋白饲料的研制及对荷斯坦奶牛生产性能的影响

试验研究了微生物发酵蛋白饲料的研制方法及对荷斯坦奶牛生产性能的影响。选择30头荷斯坦奶牛,随机分为2个处理组,每组15头,对照组日粮组成为添加30%胡麻饼的精料补充料＋青贮饲料＋苜蓿干草,试验组日粮组成为添加30%微生物发酵蛋白饲料的精料补充料＋青贮饲料＋苜蓿干草,试验期为60 d。结果表明,与对照组相比,试验组奶牛头均日产奶量提高2.25%（P〉0.05）,试验期头均产奶总增加量提高43.51%（P〈0.01）,料奶比降低9.20%（P〈0.05）,头均毛利润提高40.34元,经济效益提高3.53%。

Development of Microbial Fermentation Protein Feed and Its Effect on the Production Performance of Holstein Cows

A new kind of microbial fermentation protein feed was developed in present study and its effect on the production performance of Holstein cows was evaluated. A total of 30 Holstein cows were randomly divided into experimental group and control group, and there were 15 cows for each group.The diet composition of the control group was concentrate supplement, silage and alfalfa hay adding 30% linseed cake, and that of the experimental group was concentrate supplement, silage and alfalfa hay adding 30% microbial fermentation protein feed. The experimental period was 60 d. The results showed that compared with the control group, the average daily milk yield for each cow of the experimental group was increased by 2.25%（P〉0.05）, the total increasing amount of average milk production for each cow of the experimental group during the experiment was 43.51%（P〈0.01）higher than that of the control group,the concentrate/milk yield ratio of the experimental group was reduced by 9.20%（P〈0.05）,the average gross profit for each cow of the experimental group was 40.34 Yuan higher and the economic benefit of the experimental group was increased by 3.53%.