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Position: Home > Articles > Effect of CT2000 on Milk Yield of Dairy Cows in Hot Season Journal of Domestic Animal Ecology 2008,29 (2) 34-38

CT2000对高温季节奶牛产奶性能的影响

作  者:
高俊梅;陈军;丁威;徐自足;周启明;夏东
单  位:
上海市农业科学院畜牧兽医研究所;镇江长江乳业第二牧场;江苏农林职业技术学院
关键词:
荷斯坦奶牛;热应激;CT2000;产奶性能
摘  要:
选择2~3胎次泌乳中后期(180d)且产奶量相近的荷斯坦奶牛10头随机分为两组,饲喂相同基础日粮,试验组在基础日粮中添加CT2000,饲喂标准为30g/日.牛。结果显示:(1)两组奶牛产奶量均与牛舍日平均湿热指数(THI)和最高温度呈负相关(P<0.01);(2)饲喂CT2000前,试验组受高温影响产奶量下降率极显著高于对照组(P<0.01);饲喂CT2000期间,试验组产奶量受高温影响变化幅度小;停饲CT2000后,试验组产奶量有升高的趋势。(3)试验组日乳蛋白合成量呈逐渐上升趋势,而对照组逐渐下降;对照组日乳脂合成率逐渐下降,而试验组在停饲CT2000后又呈上升趋势。
译  名:
Effect of CT2000 on Milk Yield of Dairy Cows in Hot Season
作  者:
GAO Jun-mei1,CHEN Jun2,DING Wei2,XU Zi-zu3,ZHOU Qi-ming3, XIA Dong1*(1.Institute of Animal Husbandry and Veterinary Science,Shanghai Acadamy of Agriculture Sciences,Shanghai 201106;2.Jiangsu Polytechnic College of Agriculture and Forestry,Jurong,Jiangsu 212400;3.The 2nd Dairy Farm of Chang-jiang Mik pe,Zhenjiang Milk lndustry,Jiangsu 210003)
关键词:
Holstein cows;Heat stress;CT2000;Milk yield performance
摘  要:
10 Holstein cows in similar parity(2 ~ 3) and mid-late-lactation stage(180 d) were randomly divided into control group and experimental group.The concentration of CT2000 in the experimental group was 30g/d/herd.The results showed that:(1) Milk yield of both groups was notably negatively correlated to mean THI and maximum temperature(P<0.05)(2) Descending rate of milk yield in experimental group was extremely higher(P<0.01) compared with that in control group before feeding CT2000 during hot period and milk yield won an increased trend after withdrew CT2000.(3) Lactoprotein yield during trial and milk fat yield after withdrew CT2000 were increased in the experimental group,while declined in the control group.

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