Monensin toxicity in preruminant dairy heifers
2003
Gabor, L.J. | Downing, G.M.
Four-to six-week-old calves from a seasonal dairy herd in North Western Tasmania were presented for veterinary attention due to the occurrence of sudden deaths. Necropsy examination of one of the calves revealed several small pale foci of 1cm diameter on the epicardium. Mortalities were found to be caused by monensin that was added to the milk diet as part of a vitamin/mineral commercial premix that also controlled coccidiosis. No cases of monensin toxicity in preruminant calves have been previously documented, although there have been numerous reports in older cattle and other species.
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