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  • Title: Association of age of ram with distribution of epididymal lesions and etiologic agent.
    Author: Walker RL, LeaMaster BR, Stellflug JN, Biberstein EL.
    Journal: J Am Vet Med Assoc; 1986 Feb 15; 188(4):393-6. PubMed ID: 3949615.
    Abstract:
    A 2-year study of the frequency of isolation of various organisms from mature and yearling rams with epididymitis was conducted at the US Sheep Experiment Station at Dubois, Idaho. Investigation into the distribution of lesions in the epididymis in relation to age of the ram also was studied. Serologic or bacteriologic evidence of Brucella ovis infection was demonstrated in 79.5% of the mature rams with epididymal lesions. Actinobacillus seminis and Histophilus ovis were the 2 most frequently isolated organisms from yearling rams with lesions. The tail(s) of the epididymis was the most frequent site of lesion development in the mature rams (86.4%). Yearling rams developed lesions twice as frequently in the tail(s) of the epididymis as in the head(s) of the epididymis. When lesions were localized in the head(s) of the epididymis, an etiologic agent usually was not demonstrated.
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