Abstract
In Switzerland between 35,000 and 50,000 farm calves per year are fed rations containing concentrated whey. If the ration is balanced, whey has no adverse effects on health and growth rates of calves. Feeding whey to farm animals makes ecological and economical sense and constitutes a sound management for the disposal of milk by-products. The described case consisted of 53 calves of which 7 (13.2%) died within the feedlot-period. Based on clinical and management findings, salt-intoxication was diagnosed because of deprivation of free access to water. When large amounts of hypertonic feed containing low quality whey are fed to calves, their health is adversely affected. Therefore, article 16 of the Swiss Animal Protection Regulation should be changed.
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