畜牧兽医学报 ›› 2024, Vol. 55 ›› Issue (6): 2388-2396.doi: 10.11843/j.issn.0366-6964.2024.06.011

• 遗传育种 • 上一篇    下一篇

法系大白猪繁殖性状遗传参数估计及遗传进展分析

闫田田(), 武建亮(), 王朝军, 徐利, 孟庆利, 苏美玉, 李涵乔, 黄国英, 王超, 林佳琪   

  1. 北京中育种猪有限责任公司,北京 100194
  • 收稿日期:2023-09-26 出版日期:2024-06-23 发布日期:2024-06-28
  • 作者简介:闫田田(1996-),女,北京市平谷区人,硕士,主要从事种猪育种工作,E-mail:18201035448@163.com
    武建亮(1979-),男,山西文水人,博士,主要从事种猪育种、生产与管理工作,E-mail: wwwjl1617@163.com
    第一联系人:

    闫田田和武建亮为同等贡献作者

  • 基金资助:
    北京市科技支撑乡村产业振兴项目:猪分子设计育种技术体系创建与中育配套系选育提高(Z211100004621005);首农食品集团自立科技项目(SNSPKJ(2021)13)

Genetic Parameter Estimation and Genetic Progress Analysis of Reproductive Traits in French Large White Pigs

Tiantian YAN(), Jianliang WU(), Zhaojun WANG, Li XU, Qingli MENG, Meiyu SU, Hanqiao LI, Guoying HUANG, Chao WANG, Jiaqi LIN   

  1. Beijing Zhongyu Pig Breeding Co., Ltd, Beijing 100194, China
  • Received:2023-09-26 Online:2024-06-23 Published:2024-06-28

摘要:

旨在对北京市某母猪场法系大白猪繁殖性状进行遗传参数估计,评估其遗传进展,为该育种场制定合理的育种方案提供理论依据。本研究共收集北京市某母猪场2016-2022年法系大白母猪原始配种记录29 269条,原始分娩记录20 770条,原始系谱记录146 871条,估计该公司法系大白母猪繁殖性状的遗传参数,采用基于动物模型的最佳线性无偏预测(best linear unbiased prediction, BLUP)方法,利用DMU软件使用单性状和双性状重复力模型进行遗传力、遗传相关、表型相关和育种值的估计。结果显示,本研究中法系大白猪TNB为12.67头,NBA为10.90头,NSB为1.35头,MUM为0.14头,LWT为13.99 kg,LW21为73.93 kg;繁殖性状遗传力估计值范围为0.017~0.134,属于低遗传力;繁殖性状间的遗传相关在-0.368~0.856之间,表型相关在-0.213~0.847之间;通过绘制繁殖性状表型趋势图及遗传趋势图发现,个体的繁殖性状表型值呈上升趋势,育种值呈先上升后下降趋势。本研究结果表明,该群体遗传改良取得了良好的进展,研究结果可为法系大白猪的品种选育和遗传改良提供参考指导和理论基础。

关键词: 大白猪, 繁殖性能, 遗传参数估计, 遗传趋势

Abstract:

The aim of this study was to estimate the genetic parameters of the reproductive traits of a sow farm in Beijing, evaluate their genetic progress, and provide a theoretical basis for developing a reasonable breeding scheme. In this study, a total of 29 269 original breeding records, 20 770 original birth records, and 146 871 original pedigree records were collected from a sow farm in Beijing from 2016 to 2022. The genetic parameters of reproductive traits of French Large White sows in the company were estimated. The best linear unbiased prediction (BLUP) method based on animal model was used to estimate heritability, genetic correlation, phenotypic correlation and breeding value by DMU software using single-trait and double-trait repeatability models. The results showed that the TNB was 12.67 heads in this study, the NBA was 10.90 heads, NSB for 1.35 heads, the MUM was 0.14 heads, the LWT was 13.99 kg, the LW 21 was 73.93 kg; The estimated heritability of reproductive traits ranged from 0.017 to 0.134, belongs to the low heritability; Genetic correlations among reproductive traits was between -0.368 and 0.856, phenotypic correlation was between -0.213 and 0.847; By mapping the phenotypic trends and genetic trends of reproductive traits, individuals showed increasing reproductive trait phenotypic values, breeding values rose first and then decreased. The results of this study show that the genetic improvement in this population is good, and the results can provide reference guidance and theoretical basis for the breeding and genetic improvement of French Large White pigs.

Key words: Large White pig, reproductive traits, genetic parameter estimation, genetic trend

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