Abstract
THIRTEEN adult animals (7 sheep and 6 goats) were utilized in experiments to study the effect of experimental infection of T. vivax on reproductive organs. Sheep infected with T. vivax had abnormalities of sperm morphology (24 to 28 %). Degeneration and calcification and, occasionally, infarction were observed in testes of sheep and goats infected with T. vivax. T. vivax was present in the amniotic fluid of infected pregnant sheep. The effects of these changes on the reproductive capacity of sheep and goats in endemic areas of trypanosomiasis are discussed.