Determinants of ram sexual behavior and its impact on sheep breeding

IF 2.2 2区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Animal Reproduction Science Pub Date : 2024-09-11 DOI:10.1016/j.anireprosci.2024.107599

Rodolfo Ungerfeld , Brenda M. Alexander

引用次数: 0

Abstract

In sheep, anatomical characteristics of the cervix and animal value limit application of reproductive technologies; therefore, most breeding is natural service. Rams are selected based on desired physical traits and semen capacity, but their contribution to flock genetics is constrained by expression of sexual behavior. In 1964, it was first reported that approximately one-third of rams expressed limited sexual interest toward ewes in estrus. Therefore, if rams were evaluated for expression of sexual behavior, it is estimated that as many rams would be culled for the lack of behavior as are currently culled for semen quality or physical deficiencies. Sexual behavior is complex, requiring sensory recognition and processing, integration of ram cohorts and social dominance, female mate choice, and a physical response. This review of the literature aims to provide insights into factors influencing expression of ram sexual behavior.

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公羊性行为的决定因素及其对绵羊育种的影响

在绵羊中，子宫颈的解剖特征和动物价值限制了繁殖技术的应用；因此，大多数繁殖都是自然服务。公羊是根据所需的体格特征和精液能力来选择的，但它们对羊群遗传的贡献受到性行为表达的限制。1964 年，首次有报道称，大约三分之一的公羊对发情母羊表示出有限的性兴趣。因此，如果对公羊的性行为表现进行评估，据估计，因缺乏性行为而被淘汰的公羊数量与目前因精液质量或身体缺陷而被淘汰的公羊数量一样多。性行为很复杂，需要感官识别和处理、公羊群的整合和社会支配、雌性配偶选择以及身体反应。本文献综述旨在深入探讨影响公羊性行为表达的因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Animal Reproduction Science 农林科学-奶制品与动物科学

CiteScore

4.50

自引率

9.10%

发文量

136

审稿时长

54 days

期刊介绍： Animal Reproduction Science publishes results from studies relating to reproduction and fertility in animals. This includes both fundamental research and applied studies, including management practices that increase our understanding of the biology and manipulation of reproduction. Manuscripts should go into depth in the mechanisms involved in the research reported, rather than a give a mere description of findings. The focus is on animals that are useful to humans including food- and fibre-producing; companion/recreational; captive; and endangered species including zoo animals, but excluding laboratory animals unless the results of the study provide new information that impacts the basic understanding of the biology or manipulation of reproduction. The journal''s scope includes the study of reproductive physiology and endocrinology, reproductive cycles, natural and artificial control of reproduction, preservation and use of gametes and embryos, pregnancy and parturition, infertility and sterility, diagnostic and therapeutic techniques. The Editorial Board of Animal Reproduction Science has decided not to publish papers in which there is an exclusive examination of the in vitro development of oocytes and embryos; however, there will be consideration of papers that include in vitro studies where the source of the oocytes and/or development of the embryos beyond the blastocyst stage is part of the experimental design.