Summary Three of twelve experimental sheep developed benign foot‐rot after grazing for three months with a steer infected with Fusiformis nodosus. F. nodosus was isolated from the steer, and it had a similar protcolytic index to strains isolated from benign foot‐rot in sheep. Histological changes in the interdigital skin of the infected steer and sheep were similar. In both species F. nodosus, F. necrophorus and spirochaetes had invaded the epidermis. Chronic inflammation and hyperkeratosis were associated with this invasion. The relevance of these findings to ovine foot‐rot eradication campaigns on properties where sheep graze with cattle is discussed.
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Wilkinson et al. (1970) studied this question.