摘要
对短秦F1、F2 和本地母牛初生、6、1 2、1 8、2 4月龄体尺、体重进行测定 ,并对其生长发育强度进行对比分析。结果表明 ,在农村粗放饲养条件下 ,F2 牛初生、6、1 2月龄体重比本地牛分别增加 4 3、37 2、35 6kg ,相应提高 1 6 6%、2 8 2 %、1 7 9%;F1牛 1 8、2 4月龄比本地牛分别增加 30 9、47 8kg ,提高 1 1 0 %和 1 5 6%,改良牛纠正了本地牛的尖斜尻缺点 ,且生长发育快 ,增重效果明显 ,体躯有向肉乳兼用型发展趋势 ,若加强断奶后的培育 。
The body size, body weight measurements and development intensity analysis of native Qinchuan cattle and crossbred F1 and F2 of milk short horn and Qinchuan cattle at the age of 0, 6, 12, 18 and 24 month indicated that under the rural extensive management condition, body weight of F 2 at birth, 6 and 12 month-old was 4 3, 37 2 and 35 6 kg heavier than native cattle at the corresponding age, increased by 16 6%, 28 2% and 17 9% respectively; body weight of F 1 at 18 and 24 month-old was 30 9 and 47 8 kg heavier than native cattle at the corresponding age, increased by 11 0 and 15 6% respectively The sharp rump of native cattle was corrected by crossbreeding which resulted in a fast development, high body weight gain, and dual purpose conformation with meat and milk production, the effect could be better by intensified nurture after weaning
出处
《黄牛杂志》
2000年第4期9-12,26,共5页
Journal of Yellow Cattle Science
基金
农业部重点项目!"秦川牛本品种选育及导入外血效果研究"的一部分
