The Reliability of Two Different Protocols for Pharmacologically Induced Ejaculation in Donkeys (Equus asinus)

The aim of this study was to pharmacologically induce ejaculation in male donkeys. Two methods for pharmacological ejaculation were used. The first method was the administration of xylazine (0.66 mg/kg, intravenous); the second method was the administration of detomidine chloride (0.02 mg/kg, intramuscular), and when ejaculation was not achieved in 15 minutes, the administration of a half dose of detomidine chloride (0.01 mg/kg, intramuscular) was repeated. Both of these methods were used in all animals. In the study, 10 male donkeys were used. After the administration of xylazine, no ejaculation was observed. After the administration of detomidine, ejaculation was achieved in 20% of the cases (2 of 10). We assume that these methods are not satisfactory for ex-copula induction of ejaculation in male donkeys.