Characteristics of Libido and Testosterone Concentration of Polled and Horned Bali Bulls after GnRH Injection

IF 0.3 Q4 VETERINARY SCIENCES

Jurnal Ilmu Ternak dan Veteriner Pub Date : 2021-11-30 DOI:10.14334/jitv.v26i3.2851

H. Hasbi, H. Sonjaya, S. Baco, Reski Amalia, S. Gustina

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引用次数: 1

Abstract

Bali cattle are one of the original Indonesian germplasm, which in its development were found to be hornless or polled. Polled are Balinese cattle whose horns do not grow naturally, but have the same characteristics as those with horns. However, there are indications that polled have a lower libido. The purpose of this study was to determine the characteristics of libido and testosterone concentration after gonadotrophin releasing hormone (GnRH) injection. In this study each of 7 male polled and horned Bali cattle aged 3.5-6 years were used. Libido characteristics were observed by recording the first time the male fondled the teaser until ejaculation, while the testosterone concentration was measured using blood plasma taken on day 0 or before injection, day 7th, and day 14th after GnRH injection. Testosterone analysis used enzyme linked immunosorbent assay (ELISA) method. The results showed that the libido of polled was not different (P>0.05) compared to that of the horned on the 0, 7th and 14th days after GnRH injection. However, in polled on the 7th day after GnRH injection, it was significantly lower than on day 0 and 14, but on day 0 it was not different with day 14. Testosterone concentration on day 7 after injection of GnRH was not different (P>0.05) compared to day 0 both in polled and horned bulls, but on day 14 after injection was significantly higher (P<0.05) in horned than polled. In conclusion, polled and horned Bali bulls had high libido with a score of +1, but on the 7th day after GnRH injection, polled had lower libido than horns. The testosterone concentrations of polled and horned on day 7 after GnRH injection were not different compared to day 0, while the 14th day was higher in horned bull.

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注射GnRH后巴厘公牛的性欲和睾酮浓度特征

巴厘牛是印度尼西亚的原始种质之一，在其发育过程中被发现是无角的或有毛的。被调查的是巴厘岛牛，它们的角不是自然生长的，但与有角的牛有着相同的特征。然而，有迹象表明，受访者的性欲较低。本研究的目的是确定注射促性腺激素释放激素（GnRH）后的性欲和睾酮浓度的特征。在这项研究中，使用了7头年龄在3.5-6岁的雄性受访和有角的巴厘牛。通过记录雄性第一次抚摸挑逗物直到射精的时间来观察利比多特征，同时使用注射GnRH后第0天或注射前、第7天和第14天采集的血浆来测量睾酮浓度。睾酮分析采用酶联免疫吸附试验（ELISA）方法。结果表明，在GnRH注射后第0、7和14天，轮询者的性欲与角鲨相比没有差异（P>0.05）。然而，在GnRH注射后第7天的民意调查中，它显著低于第0天和第14天，但第0天与第14天没有差异。注射GnRH后第7天，角牛和角牛的睾酮浓度与第0天相比没有差异（P>0.05），但注射后第14天，角公牛的睾酮浓度显著高于角牛（P<0.05）。总之，受访和有角的巴厘岛公牛性欲很高，得分为+1，但在注射GnRH后的第7天，受访公牛的性欲低于角。注射GnRH后第7天，轮询和角牛的睾酮浓度与第0天相比没有差异，而角牛在第14天的睾酮浓度更高。

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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