Some aspects of epididymitis of rams in New Zealand

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Abstract
Extract In new Zealand, several different organisms have been isolated from the epididymides or testicles of rams with epididymitis. The classification and the role of some of the organisms involved is, at present, far from clear. The most definitive, and perhaps the best understood isolate is Brucella ovis (Buddie and Boyes, 1953 Buddie, M. B. and Boyes, B. W. 1953. A Brucella mutant causing disease of sheep in New Zealand. Aust. vet. J., 29: 145–153. [Google Scholar] ). Data published since 1953, indicate, however, that Br. ovis is not the only organism associated with epididymitis in rams. Dodd and Hartley ( 1955 Dodd, D. C. and Hartley, W. J. 1955. A specific suppurative epididymitis of rams. N.Z. vet. J., 12: 75–80. [Google Scholar] ) described a suppurative epididymitis of rams yielding an organism which was then, and still is, referred to as a “gram-negative pleomorph.” In Australia, Roberts ( 1956 Roberts, D. S. 1956. A new pathogen from a ewe with mastitis. Aust. vet. J., 32: 330–332. [Google Scholar] ) described an organism, Histopfiilus ovis, which appeared to be identical with the “gram-negative pleomorph.” Histophilus ovis was isolated from a case of ewe mastitis. Further to this, another organism assigned to the genus Actinobacillus has been recovered from ram testicles submitted to this laboratory for diagnostic purposes. The characteristics of this organism are not identical with those of Actinobacillus seminis, isolated from Border Leicester rams in Australia (Baynes and Simmons, 1960 Baynes, I. D. and Simmons, G. C. 1960. Ovine epididymitis caused by Actinobacillus seminis. Aust. vet. J., 36: 454–459. [Google Scholar] ).

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