摘要
Artificial insemination (AI) plays a vital role in animal breeding programs. AI is applied to enhance animal genetics and facilitate the widespread integration of desirable characteristics with a high potential for productivity. However, in sheep, this biotechnology is not commonly practicable due to multi-factorial challenges, resulting in inconsistent outcomes and unpredictable results. Thoughtful selection of semen donors and recipients based on genetic merit deeply impacts ovine AI outcomes. Additionally, endogenous factors such as breed, age, fertility traits, genetic disorders, and cervical anatomy in ewes contribute to ovine AI success. Extensive research has studied exogenous influences on sexual behavior, reproductive health, and hormonal regulation, all impacting ovine AI success. These exogenous factors include techniques like estrus induction, synchronization, semen handling methods (fresh/chilled/frozen), and insemination methods (cervical/laparoscopic), as well as nutritional factors and climatic conditions. This overview of the literature highlights the endogenous and exogenous challenges facing successful ovine AI and proposes strategies and best practices for improvement. This paper will serve as a guide for understanding and optimizing the success of ovine AI.
摘要译文
人工授精（AI）在动物育种计划中起着至关重要的作用。AI用于增强动物遗传学，并促进具有高生产力潜力的理想特征的广泛整合。但是，在绵羊中，由于多因素的挑战，这种生物技术通常不可行，从而导致不一致的结果和不可预测的结果。基于遗传优点的精液捐助者和接受者的周到选择会对卵AI的结果产生深远的影响。此外，类母羊中的内源性因素，例如品种，年龄，生育特征，遗传疾病和宫颈解剖结构，有助于卵AI的成功。广泛的研究研究了对性行为，生殖健康和荷尔蒙调节的外在影响，所有这些都影响了卵AI的成功。这些外源性因素包括诸如Estrus诱导，同步，精液处理方法（新鲜/冷冻/冷冻）以及授精方法（宫颈/腹腔镜）以及营养因素和气候条件等技术。文献的概述突出了成功的卵AI面临的内源性和外源性挑战，并提出了改进的策略和最佳实践。本文将作为理解和优化卵AI成功的指南。
Bouchra El Amiri;Abdellatif Rahim. Exploring Endogenous and Exogenous Factors for Successful Artificial Insemination in Sheep: A Global Overview[J]. Veterinary Sciences, 2024,11(2): 86