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| 大白母猪利用年限与初产性状间的遗传相关分析 | |
| 引用本文： | 赵云翔,阳文攀,高宁,彭兴,张从林,陈瑶生,刘小红.大白母猪利用年限与初产性状间的遗传相关分析[J].浙江农业学报,2019,31(11):1812. |
| 作者姓名： | 赵云翔 阳文攀 高宁 彭兴 张从林 陈瑶生 刘小红 |
| 作者单位： | 1.中山大学 生命科学学院,广东 广州 510006; 2.佛山科学技术学院 生命科学与工程学院,广东 佛山 528000; 3.广西扬翔农牧有限责任公司,广西 贵港 537100 |
| 基金项目： | 国家现代农业产业技术体系(CARS-36); 广东省现代农业产业技术体系建设专项(2018LM1137) |
| 摘 要： | 为探究大白母猪利用年限相关性状的遗传结构,实现早期选种,本研究采用国家生猪产业体系华南种猪遗传评估网1998年1月至2014年8月收集的大白猪繁殖性状数据,使用DMU(V6)分析计算母猪第1胎分娩日龄、第1胎总产仔数、第1胎产活仔数、前3胎产活仔数、前5胎产活仔数、第3胎稳定性、第5胎稳定性、终生总产仔数、终生产活仔数和终生日龄间的遗传力与遗传相关。结果表明,大白母猪第1胎总产仔数、第1胎产活仔数、终生总产子数、终生产活仔数、第5胎稳定性遗传力为0.132~0.198,属于低遗传力性状;前3胎产活仔数、前5胎产活仔数、第3胎稳定性遗传力为0.230~0.271,属于中等遗传力性状;第1胎分娩日龄、终生日龄遗传力为0.492~0.642,属于高遗传力性状。大白母猪第1胎总产仔数、第1胎产活仔数、前3胎产活仔数、前5胎产活仔数、终生总产仔数和终生产活仔数间有较强的正遗传相关,与终生日龄有较弱的正遗传相关,与第3胎和第5胎稳定性有较弱的正遗传相关。母猪初产日龄与终生总产仔数和终生产活仔数间呈一定的负遗传相关,而初产日龄与终生日龄呈强的正遗传相关。通过对母猪利用年限的遗传参数估计有望通过选育提高利用年限,通过母猪利用年限有关性状与其他性状间的遗传相关分析,有助于早期选种加快延长母猪利用年限。 |
| 关 键 词： | 大白母猪 利用年限 初产性状 遗传力 遗传相关 |
| 收稿时间： | 2019-04-05 |
Genetic correlation analysis between the longevity and first parity reproduction traits of Large White sows |
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| ZHAO Yunxiang,YANG Wenpan,GAO Ning,PENG Xing,ZHANG Conglin,CHEN Yaosheng,LIU Xiaohong.Genetic correlation analysis between the longevity and first parity reproduction traits of Large White sows[J].Acta Agriculturae Zhejiangensis,2019,31(11):1812. | |
| Authors: | ZHAO Yunxiang YANG Wenpan GAO Ning PENG Xing ZHANG Conglin CHEN Yaosheng LIU Xiaohong |
| Institution: | 1.College of Life Sciences, Sun Yat-sen University, Guangzhou 510475, China; 2.College of Life Science and Engineering,Foshan University, Foshan 528000, China; 3.Guangxi Yangxiang Agriculture and Husbandry Co., Ltd., Guigang 537100, China |
| Abstract: | To explore the genetic structure of traits related to the longevity of Large White sows and to achieve early selection, genetic correlation analysis was carried out on large white sow longevity and sow first parity reproduction traits. In this study, the reproductive traits of Large White pigs collected during the January 1998 to August 2014 in the South China Pig Genetic Evaluation Network of the National Pig Industry System were used. The DMU (V6) analysis was used to calculate the heritability and genetic correlations between the age at first farrowing, the total number born parity 1, the number born alive parity 1, the accumulated born alive to parity 3, the accumulated born alive to parity 5, the stayability to farrowing parity 3, the stayability to farrowing parity 5, the accumulated lifetime total number born, the number of piglets born alive during the life and the length of life. The results showed that the total number born parity 1, the number born alive parity 1, the accumulated lifetime total number born, the number of piglets born alive during the life and the length of life and the stayability to farrowing parity 5 of the Large White sows ranged from 0.132 to 0.198 and belong to low heritability traits; the accumulated born alive to parity 3, the accumulated born alive to parity 5, the stayability to farrowing parity 3 ranged from 0.230 to 0.271, which were moderate heritability traits; the age at first farrowing and the length of life heritability is between 0.492 and 0.642, which is a high heritability trait. Large White sows have a stronger the total number born parity 1, the number born alive parity 1, the accumulated born alive to parity 3, the accumulated born alive to parity 5, the accumulated lifetime total number born and the number of piglets born alive during the life. The positive phenotype correlation is genetically related and has a weak positive phenotype correlation with the length of life and is genetically related, and has a weak positive phenotype correlation with the stayability to farrowing parity 3, the stayability to farrowing parity 5 and is genetically related. There was a negative genetic correlation between the age at first farrowing of the sow and the number of piglets born alive during the life, and the age at first farrowing and the length of life were strongly positively related. It is possible to better use the traits related to the age of the sow by estimating the genetic parameters of the sow longevity, and to carry out early seed selection from the genetic correlation analysis between the traits related longevity of the sow and other traits. |
| Keywords: | Large White sows longevity first parity reproduction traits heritability genetic correlation |
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