The pathology of bacterial infection of the genitalia in rams

Details are given of the macroscopic and histopathological changes brought about by infection of the genitalia of rams by bacteria other than Brucella ovis. Lesions of the seminal vesicles and ampullae are described which, in addition to the clinically evident lesions of the testes and epididymis, could be an important reasons for impaired fertility. The name "bacterial infection of the genitalia", abbreviated to BIG, is suggested as a more appropriate designation for this condition than "ram epididymitis".