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A Genome Scan For Quantitative Trait Loci Affecting Male Reproductive Traits In A White Duroc × Chinese Erhualian Resource Population, Dongren Ren, J. Ren, Y. Y. Xing, Y. M. Guo, Y. B. Wu, G. C. Yang, H. R. Mao

Psychology Faculty Publications

Chinese Erhualian boars have dramatically smaller testes, greater concentrations of circulating androgens, and fewer Sertoli cells than Western commercial breeds. To identify QTL for boar reproductive traits, testicular weight, epididymal weight, seminiferous tubular diameter at 90 and 300 d, and serum testosterone concentration at 300 d were measured in 347 F₂ boars from a White Duroc × Chinese Erhualian cross. A whole genome scan was performed with 183 microsatellites covering 19 porcine chromosomes. A total of 16 QTL were identified on 9 chromosomes, including 1% genome-wide significant QTL for testicular weight at 90 and 300 d and seminiferous tubular …