| 早期断奶后备母牛繁殖效果研究 |
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| 引用本文： | 谭年年,黄春元,任吉虎,关运生. 早期断奶后备母牛繁殖效果研究[J]. 中国牛业科学, 2000, 26(4): 27-28,44 |
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| 作者姓名： | 谭年年 黄春元 任吉虎 关运生 |
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| 作者单位： | 山西省运城地区畜牧局,044000 |
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| 基金项目： | 山西省科技厅资助项目，961022， |
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| 摘 要： | 选择后备母牛１８头，每组各６头，采用不同的日粮饲喂，进行对照试验，结果试验１组后备母牛初情月龄平均为１０．３个月，第一、二情期受胎率８３．３％，繁殖成活率８３．３％。试验２组后备母牛初情期平均为１１．１个月，第一、二情期受胎率６６．７％，繁殖成活率６６．７％。对照组后备母牛初情期平均为１２．７个月，一、二情期受胎率５０．０％，繁殖成活率５０．０％。
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| 关 键 词： | 后备母牛 繁殖率 早期断奶 饲养管理 |
Reproductive Performance of Early Weaning Replacement Heifers |
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| TAN Nian-nian,HUANG Chun-yuan,REN Ji-hu,GUAN Yun-sheng. Reproductive Performance of Early Weaning Replacement Heifers[J]. China Cattle Science, 2000, 26(4): 27-28,44 |
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| Authors: | TAN Nian-nian HUANG Chun-yuan REN Ji-hu GUAN Yun-sheng |
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| Abstract: | Eighteen replacement heifers were selected and divided into 2 groups with 6 heifers each to study the early supplement, early weaning and suitable mating techniques The feeding experiment showed that the puberty age of heifers in group 1 averaged 10 3 months, the pregnancy rate of heifers in 1st and 2nd estrous was 83 3% with reproductive survival rate of 83 3%; the corresponding values in group 2 were 11 1 months, 66 7%, and 66 7% respectively; in control group were 12 7 months, 50%, and 50% respectively |
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| Keywords: | Replacement heifer Reproduction performance |
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