]*>","")" /> Effects of Parts of Concentrate in TMR Replaced by Whole Cottonsee don Production Performance of Dairy Cows in Late Lactation
Xinjiang Agricultural Sciences

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Effects of Parts of Concentrate in TMR Replaced by Whole Cottonsee don Production Performance of Dairy Cows in Late Lactation

ZHAO Zheng-Jian;ZHANG Zhi-jun;LIU Zhi-qiang;LI Zong-fang;Yu Xiong   

  • Received:2010-12-25 Revised:2010-12-25 Online:2010-12-25 Published:2010-12-25

全棉籽替换TMR中部分精料对泌乳后期奶牛生产性能的影响

赵正剑;张志军;刘志强;李宗方;余雄   

  1. 新疆农业大学动物科学学院,乌鲁木齐,830052;新疆天山畜牧榆树沟良种繁育场,新疆昌吉,831109





摘要： [目的]探讨全棉籽替换TMR(全价混合日粮)中精料对奶牛生产性能的影响.[方法]试验选用产奶量、膘情、胎次相近、泌乳后期健康的荷斯坦奶牛30头,褐牛25头.采用自身对照,对照期按牛场常规TMR饲喂奶牛,试验期在TMR中用2kg全棉籽替换等量的精料饲喂奶牛,与对照期相比较.[结果]试验期乳脂率、乳糖率极显著地高于对照期(P＜0.01),荷斯坦奶牛和褐牛的乳脂率提高了9.09;和8.70;;荷斯坦奶牛和褐牛的乳糖率提高了2.82;和7.98;;试验期奶牛产奶量、干物质采食量、乳蛋白都有增高的趋势,但与试验期相比差异不显著(P＞0.05).[结论]在奶牛泌乳后期,用2kg全棉籽替换TMR中等量(2kg)精料可以提高奶牛的乳脂率和乳糖率,但对体细胞数及其它乳成分的影响差异不显著(P＞0.05).