非遗传因素对高山美利奴羊早期生长性状及其遗传力估计的影响
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摘要
本研究利用ASReml软件分析了不同非遗传因素组合对20 057只高山美利奴羊早期生长性状及其遗传力估计的影响。结果表明:血统、性别、出生类型、出生年份、配种月份、初生月份、群别以及某些非遗传因素间的互作效应对高山美利奴羊早期生长性状均有极显著影响(P<0.001)。研究发现,高山美利奴羊早期生长性状遗传参数估计过程中有无考虑非遗传因素间的互作效应对其结果影响较大,未考虑固定效应间互作效应时所估计各性状的直接遗传力均高于考虑了固定效应间互作效应所估计出的各性状直接遗传力;考虑了固定效应间互作效应后所估计的母体效应遗传力略高于未考虑固定效应间互作效应时所估计的母体效应遗传力。本研究结果不仅为优化高山美利奴羊早期生长性状遗传评估模型提供科学依据,更为该品种的早期科学选种及后期选育提高奠定了基础。
In this study, ASReml software was used to analyze the effects of different combinations of non-genetic factors on the early growth traits and their heritability estimation in 20,057 Alpine Merino sheep. The results showed that bloodline, gender, birth type, birth year, birth month, mating month, fl ocks and the interaction between some non-genetic factors highly affected the early growth traits of Alpine Merino sheep(P<0.001). The study found that whether the interaction between non-genetic factors in the process of estimating the genetic traits of early growth traits in Alpine Merino sheep has a great infl uence on the estimation results. The estimated heritability of early growth traits without considering the interaction effects was higher than that with considering the interaction effects of non-genetic factors. After taking the interaction between nongenetic factors into consideration, the heritability estimated for the maternal effect was slightly higher. The results may provide a scientifi c basis for optimizing the genetic evaluation model of early growth traits in Alpine Merino sheep.
In this study, ASReml software was used to analyze the effects of different combinations of non-genetic factors on the early growth traits and their heritability estimation in 20,057 Alpine Merino sheep. The results showed that bloodline, gender, birth type, birth year, birth month, mating month, fl ocks and the interaction between some non-genetic factors highly affected the early growth traits of Alpine Merino sheep(P<0.001). The study found that whether the interaction between non-genetic factors in the process of estimating the genetic traits of early growth traits in Alpine Merino sheep has a great infl uence on the estimation results. The estimated heritability of early growth traits without considering the interaction effects was higher than that with considering the interaction effects of non-genetic factors. After taking the interaction between nongenetic factors into consideration, the heritability estimated for the maternal effect was slightly higher. The results may provide a scientifi c basis for optimizing the genetic evaluation model of early growth traits in Alpine Merino sheep.
引文
[1]岳耀敬,王天翔,刘建斌,等.高山美利奴羊新品种种质特性初步研究[J].中国畜牧杂志,2014,50(21):16-19.
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[5]徐新明,李彦飞,付雪峰,等.中国美利奴羊(新疆型)初生重的遗传力估计及非遗传因素分析[J].中国畜牧兽医,2014,41(6):168-171.
[6]王鹏宇,官却扎西,祁全青,等.影响青海细毛羊早期性状非遗传因素的研究[J].内蒙古农业大学学报(自然科学版),2011,32(4):29-33.
[7]Abbasi M A,Abdollahi-Arpanahi R,Maghsoudi A,et al.Evaluation of models for estimation of genetic parameters and maternal effects for early growth traits of Iranian Baluchi sheep[J].Small Ruminant Res,2012,104(1-3):62-69.
[8]范景胜,俄木曲者,熊朝瑞,等.非遗传因素对简阳大耳羊生长性状的影响[J].中国畜牧杂志,2013,49(5):13-17.
[9]梅花.影响科尔沁细毛羊主要数量性状的非遗传因素分析[J].黑龙江畜牧兽医,2015,11(21):120-121.
[10]Jalil-Sarghale A,Kholghi M,Shahrebabak M M,et al.Model comparisons and genetic parameter estimates of growth traits in Baluchi sheep[J].Slovak J Anim Sci,2014,47(1):12-18.
[11]Boujenane I,Diallo I T.Estimates of genetic parameters and genetic trends for pre-weaning growth traits in Sardi sheep[J].Small Ruminant Res,2017,146(1):61-68.
[12]Maniatis N,Pollott G E.The impact of data structure on genetic(co)variance components of early growth in sheep,estimated using an animal model with maternal effects[J].J Anim Sci,2003,81(1):101-108.
[2]Afolayan R A,Fogarty N M,Gilmour A R,et al.Genetic correlations between early growth and wool production of crossbred ewes and their subsequent reproduction[J].Anim Prod Sci,2009,49(1):17-23.
[3]林元震,陈晓阳.R与ASReml-R统计分析教程[M].北京:中国林业出版社,2014.
[4]Safari E,Fogarty N M,Gilmour A R,et al.Across population genetic parameters for wool,growth,and reproduction traits in Australian Merino sheep.1.Data structure and non-genetic effects[J].Aust J Agr Res,2007,58(2):169-175.
[5]徐新明,李彦飞,付雪峰,等.中国美利奴羊(新疆型)初生重的遗传力估计及非遗传因素分析[J].中国畜牧兽医,2014,41(6):168-171.
[6]王鹏宇,官却扎西,祁全青,等.影响青海细毛羊早期性状非遗传因素的研究[J].内蒙古农业大学学报(自然科学版),2011,32(4):29-33.
[7]Abbasi M A,Abdollahi-Arpanahi R,Maghsoudi A,et al.Evaluation of models for estimation of genetic parameters and maternal effects for early growth traits of Iranian Baluchi sheep[J].Small Ruminant Res,2012,104(1-3):62-69.
[8]范景胜,俄木曲者,熊朝瑞,等.非遗传因素对简阳大耳羊生长性状的影响[J].中国畜牧杂志,2013,49(5):13-17.
[9]梅花.影响科尔沁细毛羊主要数量性状的非遗传因素分析[J].黑龙江畜牧兽医,2015,11(21):120-121.
[10]Jalil-Sarghale A,Kholghi M,Shahrebabak M M,et al.Model comparisons and genetic parameter estimates of growth traits in Baluchi sheep[J].Slovak J Anim Sci,2014,47(1):12-18.
[11]Boujenane I,Diallo I T.Estimates of genetic parameters and genetic trends for pre-weaning growth traits in Sardi sheep[J].Small Ruminant Res,2017,146(1):61-68.
[12]Maniatis N,Pollott G E.The impact of data structure on genetic(co)variance components of early growth in sheep,estimated using an animal model with maternal effects[J].J Anim Sci,2003,81(1):101-108.