Use of a slow-release GnRH implant in an adult billy goat

A 9.4 mg deslorelin slow-release implant was inserted into an adult, healthy billy goat to achieve temporary infertility and a reduction in sexual behavior. The implant was inserted in late autumn. No significant change in testis size was observed over the following 6 weeks. The endocrine function of the testis, which was examined by stimulation with human chorionic gonadotropin, was also unchanged after 6 weeks compared to the initial examination. Histological examination revealed a preserved spermatogenesis. In conclusion, the application of a GnRH analogue implant in the adult male goat has no influence on the investigated parameters – and thus probably also on its fertility.