Retrospective study of ruminant cases (cattle, sheep and goats) presented to the Veterinary Teaching Hospital, University of Ibadan, Ibadan between a period of ten years (January1996 to December 2005) was conducted to determine the most prevalent diseases using clinical case file records. Within the period of study, a total of 601 cases were handled out of which 394 (65.56%) occurred in goats, 171(28.45 %) sheep and 36(5.99%) cattle. The most prevalent infections in the three species were ectoparasitism (31.11%), endoparasitism (16.97%) and reproductive cases (13.31%). Among caprine species, endoparasitism was 27.16%, while ectoparasitism and reproductive conditions had 20.96% and 13.96% respectively. As for ovine species endoparasitism was 38.01% while ectoparasitism 9.94% and reproductive conditions had 9.94. But among bovine species, endoparasitism was 41.67%, reproductive conditions had 22.22% and bacterial diseases had 16.67%. The high prevalence of these conditions may be due to poor management practices, improper health/veterinary care, stress on pregnant animals, and neglect of prophylactic measures for disease prevention. There is therefore need for awareness and education of livestock farmers/owners on effective prevention and control measures through livestock extension services and proper management system that restrict animals from roaming freely thereby preventing injuries caused by trauma.
Key words: Cattle, Diseases, Goats, Ibadan, Retrospective Study, Sheep