用性别鉴定精液对尼洛拉牛进行人工授精的妊娠率。
Pregnancy rate of Nelore females inseminated with male-sexed semen.
机构信息
Federal University of Mato Grosso do Sul, Faculty of Veterinary Medicine and Animal Science, Av. Filinto Muller 2443, Cidade Universitária, Campo Grande, MS, Brazil.
出版信息
Anim Reprod Sci. 2011 Dec;129(3-4):127-31. doi: 10.1016/j.anireprosci.2011.11.002. Epub 2011 Nov 22.
Pregnancy rates of Nelore females inseminated with male-sexed semen and conventional semen from the same bulls were evaluated. The females included 433 heifers (2 years old) and 230 non-suckling cows, totaling 663 animals. Average body condition score was 3.5 (1-5 scale). Estrus was induced with prostaglandin F2α. The total pregnancy rate of females inseminated with male-sexed semen of bulls A, B and C was 38.8% (131/338) less (P<0.0001) than the total pregnancy rate observed for females inseminated with conventional semen from the same bulls (57.9% [188/325]). Pregnancy rates of non-suckling cows inseminated with male-sexed semen was 43.3% (49/113), which was similar (P≥0.05) to the values found for heifers inseminated with male-sexed semen from the same bulls (36.4% [82/225]). The pregnancy rate of females inseminated with male-sexed semen was less compared with females inseminated with conventional semen. In addition, there was no significant difference in the pregnancy rate of heifers versus non-suckling cows.
评估了使用同一公牛的性别鉴定精液和常规精液对尼洛拉牛雌性的妊娠率。这些雌性动物包括 433 头小母牛（2 岁）和 230 头非哺乳期奶牛，总计 663 头。平均体况评分 3.5（1-5 分制）。使用前列腺素 F2α 诱导发情。使用公牛 A、B 和 C 的性别鉴定精液对雌性进行人工授精的总妊娠率为 38.8%（131/338），显著低于（P<0.0001）使用同一公牛的常规精液对雌性进行人工授精的总妊娠率（57.9% [188/325]）。使用性别鉴定精液对非哺乳期奶牛进行人工授精的妊娠率为 43.3%（49/113），与对同一公牛的性别鉴定精液进行人工授精的小母牛（36.4% [82/225]）的妊娠率相似（P≥0.05）。与常规精液相比，使用性别鉴定精液对雌性的妊娠率较低。此外，小母牛与非哺乳期奶牛的妊娠率没有显著差异。
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