作者: David W. Coltman , Paul O'Donoghue , Jon T. Jorgenson , John T. Hogg , Curtis Strobeck
DOI: 10.1038/NATURE02177
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摘要: … The mean sire breeding value of individuals fathered by rams that died a natural death was also significantly less than zero for both weight (one-sample t-test: mean = -1.24, sem = 0.17, …