补饲非蛋白氮补充料对放牧牛群生产性能的影响

›› 2010, Vol. 37 ›› Issue (11): 203-204.

补饲非蛋白氮补充料对放牧牛群生产性能的影响

关超1，杨效民2，张喜忠2，李军2，张元庆2

（1.山西现代农业研究中心，太原 030031； 2.山西农科院畜牧兽医研究所，太原 030032）

收稿日期:1900-01-01 修回日期:2010-05-17 出版日期:2010-11-20 发布日期:2010-11-20
通讯作者: 杨效民

Study on the Grazing Cattle Feeding with Non-protein Nitrogen Supplementation

GUAN Chao1,YANG Xiao-min2,ZHANG Xi-zhong2,LI Jun2, ZHANG Yuan-qing2

(1.Modern Agriculture Research Centre of Shanxi,Taiyuan 030031,China;2.Institute of Animal Husbandry and Veterinary Science, Shanxi Academy of Agricultural Sciences, Taiyuan 030032,China)

Received:1900-01-01 Revised:2010-05-17 Online:2010-11-20 Published:2010-11-20

摘要/Abstract

摘要： 本试验旨在研究补饲非蛋白氮（NPN）补充料对放牧牛群生产性能的影响。试验在春末夏初放牧前，选择30头9~10月龄、体重150~170 kg的中国西门塔尔太行类群小公牛，分为对照组、试验1组和试验2组，进行放牧加补饲试验。试验1组日补饲玉米粉1.0 kg；试验2组在试验1组的基础上增补NPN补充料0.25 kg。进行了为期100 d的放牧补饲效果试验。结果表明，对照组、试验1组、试验2组日增重分别为0.622、0.839和1.051 kg。试验1组比对照组日增重提高217 g；试验2组比对照组和试验1组日增重分别提高429和212 g。3组间增重差异显著。因此，北方山坡草地放牧牛群补饲少量精料效果明显，同时，补喂少量NPN补充料经济效益更为显著。

关键词: 太行类群牛; NPN补充料; 放牧; 补饲; 增重; 效益

Abstract: The experiment was conducted to investigate the effect of non-protein nitrogen supplementation on the grazing cattle. Thirty Chinese Simmental bull Taihang (weighted 150 to 170 kg) were chosen and divided into 3 groups, which were control group, experiment group 1 and experiment group 2. One kilogram corn flour was supplemented in experiment group 1 and 0.25 kg NPN supplementation was added at the basis of experiment group 1 in experiment group 2. The experiment was conducted at the time before grazing, which is the late spring and early summer, and lased 100 days. Results showed that the average daily gain was 0.622,0.839 and 1.051 kg for the control group, experiment group 1 and experiment group 2, respectively. Average daily gain was increased 217 g for the experiment group 1 than the control group and increased 429 and 212 g for experiment group 2 than control group and experiment group 1, respectively. The difference among three groups was remarkable significant, and weight gain differed significantly between experiment group 2 and control group. It was concluded that small amount of concentrate supplementation has obvious effect on the grazing cattle in northern slopes and small amount of NPN supplementation would have more significant economic benefits.

Key words: Chinese Simmental bull of Taihang; NPN supplementation; grazing; feeding; weight gain; benefit

中图分类号:

S816.79

关超;杨效民;张喜忠;李军;张元庆. 补饲非蛋白氮补充料对放牧牛群生产性能的影响[J]. , 2010, 37(11): 203-204.

GUAN Chao;YANG Xiao-min;ZHANG Xi-zhong;LI Jun;ZHANG Yuan-qing. Study on the Grazing Cattle Feeding with Non-protein Nitrogen Supplementation[J]. , 2010, 37(11): 203-204.

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