Differences in semen quality, testicular histomorphology, fertility, reproductive hormone levels, and expression of candidate genes according to sperm motility in Beijing-You chickens

Abstract excerpt

Sperm motility is used to predict the semen quality and fertilization ability of breeder roosters. Indigenous chicken breeder roosters show variation in sperm motility, but less has been known about its relationship with other reproductive attributes. In this study, 40- to 44-wk-old Beijing-You breeder roosters with the high and low sperm motility phenotypes (n = 15 in each group) were identified and compared,...

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