河南农业科学 ›› 2021, Vol. 50 ›› Issue (4): 162-168.DOI: 10.15933/j.cnki.1004-3268.2021.04.021

• 畜牧·兽医 • 上一篇    下一篇

清远麻鸡体尺与屠宰性状的因子分析及通径分析

董静超1,甘建伉2,李华1,2,张正芬2,康慧敏1   

  1. (1.佛山科学技术学院 生命科学与工程学院,广东 佛山 528225;2.广东天农食品股份有限公司,广东 清远 511827)
  • 收稿日期:2020-10-23 出版日期:2021-04-15 发布日期:2021-04-15
  • 作者简介:董静超(1996-),男,河北邯郸人,在读硕士研究生,研究方向:家禽遗传育种。E-mail:baochao002@163.com
  • 基金资助:
    广东省畜禽育种创新团队项目(2019KCXTD004);广东省动物分子设计与精准育种重点实验室项目 (2019B030301010);广东普通高校动物分子设计与精准育种重点实验室项目(2019KSYS011);广东省肉鸡商业化育种工程技术研究中心项目(〔2017〕1649号)

Factor Analysis and Path Analysis of Body Size and Slaughter Characters in Qingyuan Partridge Chickens

DONG Jingchao1,GAN Jiankang2,LI Hua1,2,ZHANG Zhengfen2,KANG Huimin1   

  1. (1.School of Life Science and Engineering,Foshan University,Foshan 528225,China;2.Guangdong Tinoo’s Food Co.,Ltd.,Qingyuan 511827,China)
  • Received:2020-10-23 Published:2021-04-15 Online:2021-04-15

摘要: 为揭示清远麻鸡体尺与屠宰性状的关系,剖析各体尺指标对屠宰性状直接和间接作用的大小,屠宰测定了125日龄清远麻鸡的体尺性状(冠高、胫长、胫围、体斜长和龙骨长)与屠宰性状(体质量、屠体质量和全净膛质量),其中公鸡98只,母鸡62只。因子分析结果表明,从5个体尺性状和3个屠宰性状中提取了3个相对独立的因子,分别与质量、高度和宽度密切相关,即质量因子、纵向躯体结构因子和横向躯体结构因子。在公鸡中各因子的贡献率分别为44.027%、19.256%和10.778%,在母鸡中各贡献率分别为47.641%、20.685%和10.617%。通径分析结果表明,胫围对清远麻公鸡的体质量、屠体质量和全净膛质量影响最大,直接效应分别为0.492、0.383和0.281;在母鸡中,胫围对体质量和屠体质量的影响最大,直接效应分别为0.473和0.472,胫长对全净膛质量影响最大,直接效应为0.397。

关键词: 清远麻鸡, 屠宰性状, 体尺性状, 因子分析, 通径分析

Abstract: To reveal the relationship between body measurements and slaughter traits, and further investigate the direct and indirect effect sizes of body measurements on slaughter traits in Qingyuan partridge chickens, 125-day-old Qingyuan partridge chickens were slaughtered and their body measurements (crown height, shank length, shank circumference, body length and keel length) and slaughter traits(body mass,carcass mass and eviscerated mass) were determined,including 98 roosters and 62 hens. The results of factor analyses showed that three relatively independent factors extracted from five body measurements and three slaughter traits were closely related to mass,height and width, named weight factor,longitudinal body structure factor and transverse body structure factor.The contributions of each factor for roosters were 44.027%, 19.256% and 10.778%, respectively, and for hens were 47.641%,20.685% and 10.617%,respectively.The results of path analyses showed that hank girth had the largest effect on the body mass,carcass mass and eviscerated mass of roosters,with the direct effeck sizes of 0.492,0.383 and 0.281,respectively.In hens, shank circumference had the largest effect on body mass and carcass mass,with the direct effects of 0. 473 and 0. 472,respectively. Shank length had the largest effect on eviscerated mass,with the direct effect size of 0.397.The results of this study provide a new perspective and theoretical basis for precise breeding and rational development of Qingyuan partridge chickens.

Key words: Qingyuan partridge chicken, Slaughter trait, Body measurement, Factor analysis, Path analysis