| 体细胞克隆牛0～12月龄生长的测定研究 |
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| 引用本文： | 郝少强,杜启科,万永杰,魏强,丁应龙,吴桂兰.体细胞克隆牛0～12月龄生长的测定研究[J].中国牛业科学,2003,29(5):12-16. |
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| 作者姓名： | 郝少强 杜启科 万永杰 魏强 丁应龙 吴桂兰 |
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| 作者单位： | 山东银香伟业生物工程有限公司,山东曹县,274400 |
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| 基金项目： | 国家自然科学基金"家畜的无性繁殖". |
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| 摘 要： | 通过对5头体细胞克隆母犊牛及其同期自然繁殖出生的荷斯坦母犊牛初生期、6月龄、12月龄的体重、体尺指标测定,初步分析了其生长发育速度的变化规律。结果表明:(1)克隆牛初生重53.67±7.00kg,明显高于自繁奶牛(P<0.01),6月龄体重141.00±16.49kg,明显低于自繁奶牛(P<0.01),12月龄体重302.80±32.17kg,与自繁奶牛基本相当;(2)克隆牛0～6月龄期间平均日增重0.70±0.11kg明显低于自繁奶牛(P<0.01),6～12月龄期间平均日增重0.90±0.12kg,与自繁奶牛基本相当(P>0.05),0～12月龄期间平均日增重0.70±0.11kg,与自繁奶牛基本相当(P>0.05);(3)克隆牛初生体尺指标明显大于自繁奶牛(P<0.01),6月龄体尺指标明显小于自繁奶牛(P<0.01),12月龄体尺指标与自繁奶牛相当(P>0.05);(4)克隆牛0～6月龄期间体尺平均增长明显低于自繁奶牛(P<0.01),6～12月龄期间体尺平均增长明显高于自繁奶牛(P<0.01),0～12月龄期间体尺平均增长明显低于自繁奶牛(P<0.01)。
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| 关 键 词： | 体细胞克隆牛 0～12月龄 生长发育 母犊牛 体重 体尺指标 自繁奶牛 |
| 文章编号： | 1001-9111(2003)05-0012-05 |
| 修稿时间： | 2003年5月20日 |
Growth Measurement of Holstein Calves Cloned from Somatic Cells |
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| Abstract: | Body sizes, body weight of 5 Holstein calves cloned from somatic cell were measured at birth, 6-month-old and 12-month-old to analyze growth regulation of cloned Holstein calves. Result showed that body weight at birth and 6- month-old of cloned calves were higher than those of normal reproduced calves(P<0.01) and both were same at 12 months old. Average daily gain of cloned calves during first 6 months were lower than that of normal reproduced calves (P<0.01), and average daily gain of cloned calves during 6 months to 12 months old and from birth to 12 months old were not significantly with those of normal reproduced calves (P>0.05). Body size at birth of cloned calves were larger than those of normal reproduced calves (P<0.01), body sizes of 6 months old of cloned calves were smaller than those of normal reproduced calves (P<0.01), and were not significantly at 12 months old (P>0.05). Body size increasing of cloned calves during first 6 months, from 6 to 12 month and from birth to 12 months old were lower than those of normal reproduced calves (P<0.01). |
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| Keywords: | Somatic cell cloned calf Growth and development Body weight Body size |
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