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首页> 外文期刊>Turkish Journal of Veterinary and Animal Sciences >The effect of ovulatory follicle size at the time of insemination onpregnancy rate in lactating dairy cows
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The effect of ovulatory follicle size at the time of insemination onpregnancy rate in lactating dairy cows

机译：授乳时排卵卵泡大小对泌乳奶牛妊娠率的影响

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The aims of this study were to determine the factors that affect follicle size at the time of artificial insemination (AI) and to detect the relationship between ovulatory follicle size at the time of AI and pregnancy rate in dairy cows. A total of 1428 follicle size measurements were obtained from Holstein-Friesian (HF) and Swedish Red (SR) cows that were inseminated with the fixed-timed AI protocols used in this study. Follicle size was affected by breed (P = 0.0001), milk production (P = 0.01), parity (P = 0.05), and season (P = 0.04). Follicle size was greater (P = 0.0001) in the HF (15.55 mm) than the SR cows (14.88 mm). Multiparous cows had larger (P = 0.04) follicles (15.35 mm) than the primiparous cows (15.07 mm). Cows with follicle sizes between 13.5 and 17.5 mm were more likely to be pregnant than cows with other sizes follicles (P
机译：这项研究的目的是确定影响人工授精（AI）时卵泡大小的因素，并检测AI时的排卵卵泡大小与奶牛妊娠率之间的关系。从荷斯坦-弗里斯兰（HF）和瑞典红（SR）奶牛中获得了总计1428个卵泡大小测量值，这些奶牛使用了本研究中使用的定时AI协议进行授精。卵泡大小受品种（P = 0.0001），产奶量（P = 0.01），胎次（P = 0.05）和季节（P = 0.04）的影响。 HF（15.55 mm）的卵泡大小大于（SR = 14.88 mm）（P = 0.0001）。多头母牛的卵泡（P = 0.04）（15.35毫米）比初头母牛（15.07毫米）大。卵泡大小在13.5至17.5毫米之间的母牛比其他卵泡大小的母牛更容易怀孕（P

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