湖北农业科学 ›› 2021, Vol. 60 ›› Issue (9): 102-105.doi: 10.14088/j.cnki.issn0439-8114.2021.09.019

• 畜牧·兽医 • 上一篇    下一篇

标准化生产牦牛屠宰性状的主成分分析

吴锦波1, 何世明1, 李铸1, 王泰1, 蹇尚林2, 塔英3, 谭本旭3   

  1. 1.阿坝藏族羌族自治州畜牧科学技术研究所,四川 红原 624402;
    2.阿坝藏族羌族自治州畜牧工作站,四川 马尔康 624099;
    3.阿坝藏族羌族自治州动物疫病预防控制中心,四川 马尔康 624099
  • 收稿日期:2020-04-13 发布日期:2021-05-14
  • 通讯作者: 李 铸(1991-),男,四川蓬安人,畜牧师,主要从事高原特色资源研究,(电话)18780105552(电子信箱)515971391@qq.com。
  • 作者简介:吴锦波(1983-),男(侗族),贵州黎平人,高级畜牧师,硕士,主要从事畜禽遗传育种研究,(电话)18980994013(电子信箱)25974453@qq.com。
  • 基金资助:
    阿坝州应用技术研究与开发资金项目(19YYJSYJ0036)

Principal component analysis of carcass traits of yak under standardized production conditions

WU Jin-bo1, HE Shi-ming1, LI Zhu1, WANG Tai1, JIAN Shang-lin2, TA Ying3, TAN Ben-xu3   

  1. 1. Institute of Animal Science and Technology of Aba Tibetan and Qiang Autonomous Prefecture,Hongyuan 624402,Sichuan,China;
    2. Animal Husbandry Workstation of Aba Tibetan and Qiang Autonomous Prefecture,Barkam 624099,Sichuan,China;
    3. Animal Disease Prevention and Control Center of Ngawa Tibetan and Qiang Autonomous prefecture,Barkam 624099,Sichuan,China
  • Received:2020-04-13 Published:2021-05-14

摘要: 为了探究标准化生产的牦牛屠宰性状之间的相关性,选取了年龄和体重相近的麦洼牦牛和金川牦牛各15头饲养100 d后屠宰,测定了11个屠宰性能指标,并进行了主成分分析。结果表明,屠宰后麦洼牦牛脾重为0.75 kg,高于金川牦牛的0.57 kg,且差异极显著(P<0.01),其余各指标无显著差异(P>0.05);麦洼牦牛肝重和肾重变异系数分别为11.28%和14.81%,金川牦牛肝重和肾重变异系数分别为12.39%和11.76%,暗示这两个指标还有一定的选育潜力;主成分分析确定了3个主成分,累积贡献率达70.844%,第一主成分可反映牦牛的体重情况,第二主成分可反映牦牛的脾脏和肝脏发育情况,第三主成分可反映牦牛肾脏重量情况。

关键词: 标准化生产, 牦牛, 屠宰性状, 主成分分析

Abstract: In order to explore the difference and correlation of yak laughter traits under standardized production conditions, we selected 15 Maiwa yaks and 15 Jinchuan yaks which with similar age and weight, then all the animals were slaughtered after breeding 100 days. 11 slaughter traits such as were determined and analyzed statistically. The results showed that the spleen weight of Maiwa yak was 0.75 kg, higher than that of Jinchuan yak (0.57 kg), and the difference was significant (P<0.01), while the other indicators showed no significant difference (P>0.05). The variation coefficients of liver weight and kidney weight in Maiwa yak were 11.28% and 14.81%, respectively, and those in Jinchuan yak were 12.39% and 11.76%, respectively, which suggesting that these two indexes have breeding potential. Three principal components were identified by principal component analysis, and the cumulative contribution rate was up to 70.844%. The first principal component could reflect the weight of yaks, the second principal component could reflect the development of spleen and liver of yaks, and the third principal component could reflect the kidney weight of yaks.

Key words: standardized production, yak, slaughter performance, principle component analysis

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