Vetch toxicosis in cattle grazing Vicia villosa ssp dasycarpa and V. benghalensis [New South Wales]
1993
Harper, P.A.W. (New South Wales Agriculture, Grafton (Australia). Agricultural Research and Advisory Station) | Cook, R.W. | Gill, P.A. | Fraser, G.C. (New South Wales Agriculture, Wollongbar (Australia). Regional Veterinary Lab.) | Badcoe, L.M. (New South Wales Agriculture, Armidale (Australia). Regional Veterinary Lab.) | Power, J.M.
The epidemiological, clinical and pathological features of a disease syndrome in adult cattle grazing woolly-pod vetch (Vicia villosa ssp dasycarpa) or popany vetch (V. benghalensis) are reported. Outbreaks of toxicosis occurred between midwinter and midsummer in 3 dairy and 6 beef herds on the north coast of New South Wales, between 1982 and 1992. Friesians, Angus, Murray Grey, Guernsey and Hereford breeds were affected. Mean morbidity and case fatality rates in affected herds were 7 percent (65 of 889) and 69 percent, respectively. Signs of pruritic dermatitis, illthrift and death were associated with an eosinophilic granulomatous inflammation of many organs, particularly involving the renal cortex, dermis, myocardium, adrenal glands, lymph nodes and hepatic portal triads.
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