| 郭 军，曲 亮，窦套存，王星果，胡玉萍，王克华.鸡产蛋数遗传力的 Meta 分析[J].广东农业科学,2020,47(3):111-116 |
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鸡产蛋数遗传力的 Meta 分析 |
| Heritability of Egg Production of Chickens: A Meta-analysis |
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| DOI：10.16768/j.issn.1004-874X.2020.03.015 |
| 中文关键词: 产蛋数 Meta 分析 亚组分析 回归分析 遗传力 周龄 |
| 英文关键词: egg production Meta analysis subgroup analysis regression analysis heritability week age |
| 基金项目:江苏省公益类科研院所自主科研经费（BM2018026）；江苏现代农业产业技术体系建设项目（JATS［2019］378）；国家现代农业产业技术体系建设专项（CARS-40-K01）；江苏省农业重大新品种创制项目（PZCZ201729） |
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| 中文摘要: |
| 【目的】产蛋数是蛋鸡、肉种鸡育种工作中主选性状，但已有研究报道的产蛋数遗传力跨度较大，
使育种工作者无从选择。对鸡产蛋数遗传力进行 Meta 分析，旨在评估蛋鸡、肉种鸡及地方鸡种产蛋数遗传力及
其动态变化规律。【方法】通过检索中国知网、ISI Web of Science、PubMed、EBSCO 及 ProQuest 数据库，收集
1990—2019 年国内外发表的产蛋数遗传评估相关文献，共获得 72 篇符合内控标准的论文。应用随机效应模型、
亚组分析及两步法回归分析评估产蛋数遗传力数据集。【结果】随机效应模型分析结果表明，产蛋数遗传力为
0.234±0.009，不同研究结果之间异质性较高；亚组分析结果表明，白壳蛋鸡、褐壳蛋鸡亚群产蛋数遗传力分别
为 0.242±0.022、0.224±0.017，肉种鸡、地方鸡亚群产蛋数遗传力分别为 0.221±0.029、0.240±0.014，产蛋后
期遗传力呈现下降。产蛋数遗传力方程为 h2=-0.0023t+0.2253。【结论】遗传因素对鸡产蛋数变异贡献较低，遗
传力的异质性可归因于遗传背景和周龄。 |
| 英文摘要: |
| 【Objective】Egg production is a major selected trait in the breeding of layer and broiler breeder. A number
of researches and reports on the heritability of egg production have been conducted, however, the results were discrepant,
which resulted in the tough choice of breeders. The meta-analysis aimed to evaluate the heritability of egg production of
layers, broiler breeders and local chickens and the dynamics on the heritability.【Method】Relevant documents on the
evaluation of heritability of egg production published at home and abroad from 1990 to 2019 were collected by searching
the databases of CNKI, ISI web of science, PubMed, EBSCO and ProQuest. A total of 72 papers were included in the meta analysis. The dataset of the heritability of egg production was assessed with random effect model, subgroup analysis and two stepwise regression analysis.【Result】Random effect model showed that the heritability of egg production was 0.234±0.009
and there were great differences between different studies. Subgroup analysis showed that the heritability of white shelled
layers and brown shelled layers was 0.242±0.022 and 0.224±0.017, respectively, and that of broiler breeders and local
chickens was 0.221±0.029 and 0.240±0.014, respectively. The heritability showed a declining trend during late laying
period. Regression analysis showed that the heritability function expressed as: h2=-0.0023t+0.2253.【Conclusion】A small proportion of egg production variation could attribute to the genetic factors, and the genetic background and week age might
contribute to the heterogeneity between different studies. |
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