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Excess copper levels giving rise to mortality in cows

Visited a farm in County Derry where the farmland is below sea level and there are great imbalances with cobalt, copper and litenum in the soils and very high aluminum.  These farmers had undertaken to supply extra copper in the diet to effectively  flood the system with copper in the hope that copper might be made available for the metabolic requirements of the cow. The farmers in question found that cow mortality has increased dramatically in the past 2 years with this regime of management,  Livers were recovered from the cows that had died and it was found that the copper levels were between 10 and 20 times the range acceptable for a dairy cow.  The vet in question advised the farmers to refrain from feeding such large levels of copper in the diet as would give rise to mortality of  the cows.

Dr.Dan

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