Harighi M F, Wahid H, Khumran A M, Baiee Falah
Institute of Tropical Agriculture and Food Security (ITAFOS), Faculty of Agriculture, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, University Putra Malaysia, Serdang, Malaysia.
Trop Anim Health Prod. 2022 Apr 29;54(3):174. doi: 10.1007/s11250-022-03178-8.
Breeding soundness examination (BSE) is a common evaluation to predict the reproductive ability of male livestock. The generated guideline for BSE is specified for each animal species to enhance the performance of BSE. However, there is no particular BSE guideline for bucks yet; then, the BSE guidelines for ram and bull are commonly used for bucks. This investigation was conducted to determine the main BSE characteristics and the appropriate age range for assessment in Boer goats. For this purpose, semen was collected using electro-ejaculation, and seminogram variables (semen-BSE traits) were evaluated using conventional methods. The association between common testicular biometric variables (TBVs) and semen-BSE traits were assessed using Pearson's correlation coefficients and multiple linear regression. Logistic regression was used to test the validity of TBVs for the BSE of Boer goats. In this study, a strange appearance of the head of sperm, known as "rod-in-head" (RIH), was observed. The results showed that the appropriate age range for performing BSE in bucks is 12-30 months. Moreover, scrotal length in the range of 10-15.9 cm was the eligible TBV to be used as a predictor for semen-BSE traits. It was suggested that developing a BSE guideline for bucks is necessary for unbiased selection in performing BSE.
繁殖力鉴定（BSE）是一种用于预测雄性家畜繁殖能力的常见评估方法。为提高BSE的性能，针对每种动物制定了相应的BSE指南。然而，目前尚无针对公羊的特定BSE指南；因此，公羊通常采用绵羊和公牛的BSE指南。本研究旨在确定波尔山羊BSE的主要特征以及合适的评估年龄范围。为此，采用电刺激采精法采集精液，并使用传统方法评估精液图变量（精液BSE性状）。使用Pearson相关系数和多元线性回归评估常见睾丸生物特征变量（TBV）与精液BSE性状之间的关联。采用逻辑回归检验TBV对波尔山羊BSE的有效性。在本研究中，观察到一种精子头部的奇特外观，称为“头部带杆”（RIH）。结果表明，公羊进行BSE的合适年龄范围为12至30个月。此外，阴囊长度在10至15.9厘米范围内是可作为精液BSE性状预测指标的合格TBV。建议制定公羊的BSE指南，以便在进行BSE时进行无偏选择。
