| 不同营养水平对超早期断奶母羊发情时间的影响 |
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| 引用本文： | 张海涛,郑中朝,张力,周学辉,郭爱伟,苗小玲.不同营养水平对超早期断奶母羊发情时间的影响[J].甘肃农业大学学报,2004,39(4):390-393. |
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| 作者姓名： | 张海涛 郑中朝 张力 周学辉 郭爱伟 苗小玲 |
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| 作者单位： | 1. 甘肃农业大学动物科技学院,甘肃,兰州,730070
2. 中国农业科学院兰州畜牧与兽药研究所,甘肃,兰州,730050 |
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| 基金项目： | 甘肃肉羊规模化高产配套技术试验示范项目(编号:KY2001-15-02) |
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| 摘 要： | 试验通过对18只小尾寒羊母羊超早期(10~15 d)断奶,进行高、中、低能量蛋白质营养水平的饲喂,比较不同营养水平对超早期断奶母羊发情时间的影响。结果如下:高、中、低营养水平组母羊的发情时间分别为37.2 d、36.7 d和45 d,高(P<0.05)、中(P<0.01)营养水平组的发情时间明显早于低水平组,明显早于羊场内带羔哺乳组母羊发情时间(P<0.01);高(P<0.05)、中(P<0.01)营养水平组的发情率明显高于低水平组,分别为83.33 %、100.00 %、 33.33 %。上述结果表明,中等能量蛋白质营养水平能较好促进母羊的发情,缩短母羊产后的发情时间。
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| 关 键 词： | 母羊 营养水平 超早期断奶 发情时间 |
| 文章编号： | 1003-4315(2004)04-0390-04 |
Effects of different nutrition levels on oestrus time of over-early weaning ewes |
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| ZHANG Hai-tao,ZHENG Zhong-chao,ZHANG Li,ZHOU Xue-hui,GUO Ai-wei,MIAO Xiao-ling.Effects of different nutrition levels on oestrus time of over-early weaning ewes[J].Journal of Gansu Agricultural University,2004,39(4):390-393. |
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| Authors: | ZHANG Hai-tao ZHENG Zhong-chao ZHANG Li ZHOU Xue-hui GUO Ai-wei MIAO Xiao-ling |
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| Institution: | ZHANG Hai-tao1,ZHENG Zhong-chao1,ZHANG Li2,ZHOU Xue-hui2,GUO Ai-wei,MIAO Xiao-ling2 |
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| Abstract: | A feed experiment at three nutrition levels (i.e. high, middle and low) of diets was conducted with eighteen ewes of Small-tail Han sheep under over-early weaning (10~15days), aiming to evaluate the effects at different nutrition levels on the oestrus time of these ewes. The results indicated that oestrus time of ewes in high nutrition level group(37.2 d) (P<0.05) and middle group(36.7 d) (P<0.01) were significantly earlier than that of low group(45d), and that of ewes in the sheep market was 57 d, which was later than that of high, middle and low nutrition level. The oestrus rate of ewes in high, middle and low nutrition level groups were 83.33 %, 100.00 % and 33.33 % respectively.This experiment suggests that diets at middle nutrition level could fairly promote oestrus of ewes and shorten oestrus time of post-lambing ewes |
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| Keywords: | ewes nutrition level over-early weaning oestrus time |
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