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Investigations into the use of supplements for the control of hypomagnesaemia in dairy cows during the spring grazing period
Published online by Cambridge University Press: 27 March 2009
Extract
1. Three experiments are described on the feeding of supplements of calcined magnesite, linseed cake and vitamin D to dairy cows for the control of hypomagnesaemia and the prevention of hypomagnesaemic tetany on spring pastures.
2. A daily supplement of 2 oz. calcined magnesite either contained in 2 lb. of dredge corn cubes or 4 lb. dredge corn mix, or as a drench, gave adequate protection against the development of hypomagnesaemia in the fifty-six cows to which it was given.
3. The supplements of 3½–4 lb. linseed cake and 12,500 i.u. vitamin D gave only partial protection.
4. The economics of providing dairy herds with magnesite during the early grazing period is discussed.
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- Copyright © Cambridge University Press 1958
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