摘要
Successful artificial breeding underpins rapid genetic and production gains in animal agriculture. In sheep, artificial insemination with frozen semen is performed via intrauterine laparoscopy as frozen-thawed spermatozoa do not traverse the cervix in sufficient numbers for high fertility and transcervical insemination is anatomically impossible in most ewes. Historically, laparoscopic artificial insemination has always been considered reasonably successful, but recent anecdotal reports of poor fertility place it at risk of warning adoption. Understanding the male, female and environmental factors that influence the fertility of sheep is warranted if the success of artificial insemination is to be improved and genetic progress maximised for the sheep industry. This review details the current practice of laparoscopic AI in sheep. It explores the effects of semen quantity and quality, the ewe, her preparation, and environmental conditions, on the fertility obtained following laparoscopic artificial insemination.
摘要译文
成功的人工育种基于动物农业的快速遗传和生产增长。在绵羊中，通过宫内腹腔镜检查进行的冷冻精液的人工授精，因为冷冻透射的精子不会以足够数量的数量横穿子宫颈，以获得高生育能力，而在大多数母羊中则是解剖学上不可能的。从历史上看，腹腔镜人工授精一直被认为是合理的成功，但是最近的轶事报道使其有害采用警告的风险。如果要改善人工授精的成功并最大程度地提高了绵羊行业的遗传进步，则必须了解影响绵羊生育能力的男性，女性和环境因素。本评论详细介绍了腹腔镜AI在绵羊中的当前实践。它探讨了精液数量和质量，母羊，制备和环境条件对腹腔镜人工授精后获得的生育能力的影响。
J.P. Rickard. Factors affecting the success of laparoscopic artificial insemination in sheep[J]. Animal Reproduction Science, 2024,264: 107453