Pyridoxine Deficiency in the Calf

Abstract
The bovine species requires vitamin B6, supplied either in the diet or by rumen or intestinal symbiosis. On a pyridoxine-deficient diet calves do not grow, and the excretion of pyridoxine and its metabolites is lowered. Pyridoxine deficiency in the young calf reared on a pyridoxine-low “synthetic milk” ration is characterized by lack of apppetite, anorexia, poor growth, sluggishness and listlessness, poor haircoat (dull and falling out), and in some cases by the appearance of severe epileptiform fits and death. If administered early enough, the calves respond to vitamin B6 given as pyridoxal, pyridoxamine or pyridoxine.

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