| 辽宁绒山羊母羊繁殖规律的研究 |
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| 引用本文： | 姜怀志,葛晨霞,戢爽,李雪,马宁.辽宁绒山羊母羊繁殖规律的研究[J].吉林农业大学学报,2006,28(1):77-79,83. |
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| 作者姓名： | 姜怀志 葛晨霞 戢爽 李雪 马宁 |
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| 作者单位： | 1. 吉林农业大学动物科技学院,长春,130118
2. 九台市畜牧兽医工作站,九台,130500 |
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| 基金项目： | 吉林省科技厅资助项目(20030210-2) |
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| 摘 要： | 通过资料分析与现场观察,研究了辽宁绒山羊的繁殖规律。结果表明:辽宁绒山羊发情时间主要集中在10月上旬和中旬,发情周期平均为19.23 d,发情持续期平均为35.62 h,母羊的性成熟平均为6.12月龄,初配年龄为18.12月龄,妊娠期为148.17 d,第一情期受胎率为83.61%,产羔率为121.62%,双羔率为21.28%,断奶成活率为98.64%,繁殖成活率为96.43%。说明辽宁绒山羊母羊在繁殖上具有明显的季节性和时间性,而且具有受胎率、断奶成活率和繁殖成活率高的优点。
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| 关 键 词： | 辽宁绒山羊 母羊 繁殖规律 |
| 文章编号： | 1000-5684（2005）05-0077-03 |
| 收稿时间： | 2005-01-02 |
| 修稿时间： | 2005-01-02 |
Study on Laws of Reproduction of Liaoning Cashmere Goats |
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| JIANG Huai-zhi,GE Chen-xia,JI Shuang,LI Xue,MA Ning.Study on Laws of Reproduction of Liaoning Cashmere Goats[J].Journal of Jilin Agricultural University,2006,28(1):77-79,83. |
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| Authors: | JIANG Huai-zhi GE Chen-xia JI Shuang LI Xue MA Ning |
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| Institution: | 1. College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China; 2. Jiutai Animal Husbandry and Veterinary Work Station, Jiutai 130500, China |
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| Abstract: | Reproductive laws of Liaoning cashmere goats are clarified after data analysis and field observation.The result indicates that the estrous time of Liaoning cashmere goats concentrates on the former(20 d) of October every year.The estrous cycle averagely maintains for 19.23 d.It keeps 35.62 h for each estrous period.Ewe sexual maturity comes averagely at 6.12 months.The first service age is 18.12 months.Pregnancy duration is 148.17d.The pregnancy rate for first estrus is 83.61%.Birth rate is 121.62%.Twin lamb rate is 21.28%.Weaning survival rate is 98.64%.Reproduction survival rate is 96.43%.It shows that reproductive performance of Liaoning cashmere goats has obvious seasonal and timing character.And it also has the priorities of high pregnancy rate,high weaning survival rate and reproduction survival rate. |
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| Keywords: | Liaoning cashmere goat female goat reproductive law |
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