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Vetch toxicosis in cattle grazing Vicia villosa ssp dasycarpa and V benghalensis
Author(s) -
HARPER PAW,
COOK RW,
GILL PA,
FRASER GC,
BADCOE LM,
POWER JM
Publication year - 1993
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.1993.tb06107.x
Subject(s) - vicia villosa , biology , grazing , herd , outbreak , veterinary medicine , zoology , medicine , agronomy , cover crop , virology
SUMMARY 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 toxlcosis occurred between midwinter and midsummer in 3 dairy and 6 beef herds on the north coast of New South Wales, between 1982 and 1992. Friesian, Angus, Murray Grey, Guernsey and Hereford breeds were affected. Mean morbidity and case fatality rates in affected herds were 7% (65 of 889) and 69%, 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.