Predictive potential of microsatellite markers on heterosis of fecundity in crossbred sheep
文献类型: 外文期刊
作者: Di, R. 1 ; Chu, M. X. 1 ; Li, Y. L. 2 ; Zhang, L. 3 ; Fang, L. 1 ; Feng, T. 1 ; Cao, G. L. 1 ; Chen, H. Q. 2 ; Li, X. W. 3 ;
作者机构: 1.Chinese Acad Agr Sci, Inst Anim Sci, Minist Agr, Key Lab Farm Anim Genet Resources & Utilizat, Beijing 100193, Peoples R China
2.Anhui Agr Univ, Coll Anim Sci & Technol, Hefei 230036, Peoples R China
3.Sichuan Agr Univ, Coll Anim Sci & Technol, Yaan 625014, Peoples R China
关键词: Sheep;Microsatellite;Heterosis;Litter size
期刊名称:MOLECULAR BIOLOGY REPORTS ( 影响因子:2.316; 五年影响因子:2.357 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Small Tail Han (STH) sheep is a famous Chinese local breed and has perfect prolificacy performance, but it is inferior to imported mutton sheep breeds on meat production. In this study, six imported male sheep populations (White Suffolk, Black Suffolk, Texel, Dorper, South African Mutton Merino and East Friesian) were crossbred with STH female sheep respectively. The heterosis values of litter size, average daily gain (ADG) and feed conversion ratio (FCR) of crossbred sheep were analyzed for seeking the optimal cross. Meanwhile 28 microsatellite markers were used to measure the genetic distance between imported populations and STH population. Regression between the genetic distance and heterosis was analyzed for evaluating potential of microsatellite on predicting heterosis. Results showed a significant positive linear correlation (r = 0.892, P < 0.05) between heterosis of litter size and genetic distance D-A of six crosses. This implied that these microsatellite markers had moderate potential to forecast heterosis of litter size in sheep. Results of this study also indicated that South African Mutton Merino and East Friesian sheep would be the optimal sire breeds for the litter size and might bring the greatest economic benefit in six imported populations; Suffolk sheep could be prior consideration as sire breeds when breeding objective focused on ADG. Finally these results provided valuable information for Chinese sheep industry.
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