优质牧草饲喂奶牛效果试验

Effect of Forages on Dairy Cows

选取16头中国荷斯坦乳牛进行饲养试验，试验1、2、3组和对照组精料水平均为7kg／d·头，基础料分别为维多-45高丹草35kg／d·头、大力士甜高粱35kg／d·头、高丹草30kg／d·头＋苜蓿5kg／d·头和稻草、豆渣、啤酒糟各10kg／d·头。结果表明：试验1、2、3组的产奶量及奶品质极显著高于对照组（P〈0．01），经济效益最高为试验2组，其次为试验3组，且两组均显著高于对照组（P〈0．05）。

20 China black and white dairy cows were Selected to test feeding effects, treatment 1, 2, 3 and the comparison group were feeding 7 kg/d concentration per day, basic diets were 35 kg/d Sorghum Hybrid Sudangrass for treatment 1, 35 kg/d Hunnigreen sorghum for treatment 2, 30kg/d Sorghum Hybrid Sudangrass and 5 kg/d clover for treatment 3, and 10 kg/d straw, 10 kg/d bean dregs, 10 kg/d beer dregs for comparison group. The results was that the milk yield and quality of treatment 1,2 and 3 were significantly higher than comparison group （P〈0.01）, the best economic benefit was treatment 3, better than treatment 1, and the tow groups were better than comparison group（P〈0.05）.