Ulcerative Balanoposthitis

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  • Ulcerative balanoposthitis (pizzle rot):
    • Common in Merino sheep and Angora goats
    • Ulceration around prepucial orifice with brown crust, and occasionally on vulva of ewes
    • Bacteria hydrolyse urea to ammonia which causes mucosal irritation and ulceration
    • High urine urea level, from high protein intake may predispose to condition
    • High oestrogen levels in pastures also predisposes
    • Castration and heavy wool around the prepuce are risk factors

Caused by Corynebacterium renale.