Monaco Davide, Fatnassi Meriem, Padalino Barbara, Aubé Lydiane, Khorchani Touhami, Hammadi Mohamed, Lacalandra Giovanni Michele
Department of Emergency and Organ Transplantation (D.E.T.O.), Veterinary Clinics and Animal Production Section, University of Bari Aldo Moro, Valenzano, Bari, Italy.
Livestock and Wildlife Laboratory, Arid Lands Institute (I.R.A.), University of Gabès, Médenine, Tunisia; Institut Supérieur Agronomique de Chott-Meriem, University of Sousse, Tunisia.
Res Vet Sci. 2015 Oct;102:212-6. doi: 10.1016/j.rvsc.2015.08.011. Epub 2015 Sep 2.
GnRH treatment has been suggested to increase testosterone levels temporarily and to stimulate libido in stallions, but its use has not fully ascertained in dromedary camels. The aim of this work was to study the effects of administering 100 μg of GnRH on testosterone profile, libido and semen parameters in dromedary camels. The same bulls were used as self-controls and experimental group. Blood samples were collected every 20 min (T0-T12) for 4h, and semen collections were performed over a 2-hour period after T12. GnRH was administered immediately after T0. In GnRH-treated bulls, testosterone levels showed an upward trend, peaking after 140 min, and then slowly decreasing. GnRH administration also led to a decrease in mating time and an increase in spermatozoa concentration. Overall, it seems that administration of 100 μg GnRH might increase testosterone levels temporarily and enhance camel reproduction performance.
促性腺激素释放激素（GnRH）治疗已被建议可暂时提高种马的睾酮水平并刺激性欲，但在单峰骆驼中其使用尚未得到充分证实。这项工作的目的是研究给予100μg GnRH对单峰骆驼睾酮水平、性欲和精液参数的影响。使用相同的公牛作为自身对照和实验组。每20分钟采集一次血样（T0 - T12），持续4小时，并在T12之后的2小时内进行精液采集。GnRH在T0后立即给药。在接受GnRH治疗的公牛中，睾酮水平呈上升趋势，在140分钟后达到峰值，然后缓慢下降。给予GnRH还导致交配时间减少和精子浓度增加。总体而言，给予100μg GnRH似乎可能会暂时提高睾酮水平并增强骆驼的繁殖性能。
