Failure of Pharmacologically - Induced Ejaculation in Donkeys (Equus Asinus) Under Field Conditions: A Test of Two Different Treatment Protocols

The aim of this study was to test pharmacologically-induced ejaculation in male donkeys under field conditions using two different protocols. Two methods were used: The first method was the administration of imipramine (3mg/kg, p.o.), and then 2 hours later, xylazine (0.66 mg/kg, i.v.).The second method was a single administration of a combination of butorphanol (0.02mg/kg, i.v.) and xylazine (0.33 mg/kg, i.v.). Nine male donkeys used in the study and both of the methods were applied to all of them. Ejaculation was not achieved in any of the donkeys using either method. Therefore the conclusion was made that these two methods are not satisfactory for ex-copula induction of ejaculation in male donkeys under the conditions of our study.