The use of long-acting neuroleptics in impala (Aepyceros melampus)

The long-acting neuroleptics perphenazine enanthate and pipothiazine palmitate were found to be effective for the long-term tranquilization of newly-captured and captive impala (Aepyceros melampus). Perphenazine enanthate (1.5 to 5.7 mg kg-1) produced a favourable state of tranquilization with a maximum effect lasting up to 7 d. Pipothiazine palmitate (4.5 mg kg-1) produced tranquilization lasting 16 d. The animals accepted humans inside their pens, at a distance of 0.5 to 4 m, without showing any excitement. No untoward side-effects were observed.