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Experiments on the cause of hypomagnesaemic tetany in calves

Vet. Rec, 71: 256-260

Experiments on the cause of hypomagnesaemic tetany in calves

Calves fed on milk from which a large proportion of the magnesium had been removed became magnesium-deficient, as was indicated by a fall of serum Mg from just over 2 mg. per 100 ml. in calves 1 week old to about 1 mg. at 10 weeks. Blood cholinesterase values, estimated from the seventh week, were not related to either serum Mg values or to clinical signs of Mg deficiency.

Accession: 014043223

Related references

Blaxter, K.L.; Cowlishaw, B.; Rook, J.A.F., 1960: Potassium and hypomagnesaemic tetany in calves. Four groups of four calves were given amounts of magnesium, both with or without an excess of potassium, added as potassium chloride. The excess of potassium resulted in the death of three of the eight calves, the clinical signs observed before de...

Parr, W.H., 1957: Hypomagnesaemic tetany in calves fed on milk diets. Calves were fed (i) whole milk, (ii) artificial milk, (iii) whole milk + flaked maize, (iv) whole milk + hay (low in Mg), (v) artificial milk + B-vitamin or (vi) whole milk + antibiotics, and the rate of development of hypomagnesaemia studied. The...

Todd, J.R.; Horvath, D.J.; Anido, V., 1969: Plasma creatine phosphokinase levels in hypomagnesaemic tetany in calves. Four bull calves were reared on Mg-free milk and three controls on natural milk. Plasma creatine phosphokinase (CPK) activity of the control calves was 72-120 mu M/min./litre. All four experimental calves developed hypomagnesaemia, and in two a fa...

Todd, J.R.; Horvath, D.J., 1970: Magnesium and neuromuscular irritability in calves, with particular reference to hypomagnesaemic tetany. Four calves were maintained on low-magnesium milk from birth to about 20 weeks of age. Severe hypomagnesaemia occurred in all four and typical signs of hypomagnesaemic tetany in two. No changes occurred in other plasma electrolytes. Measurements w...

Kemp, A., 1958: Influence of fertiliser treatment of grassland on the incidence of hypomagnesaemia and hypomagnesaemic tetany (grass tetany) in milking cows. During 1956 and 1957 serum Mg was estimated in 4 groups of 3 or 4 milking cows grazing plots given different combinations of K, P and N fertilizers at different levels. High K, 60 per cent. muriate of potash at the rate of 450 kg. K2O per hectare,...

Todd, J.R., 1976: Calcium, phosphorus and magnesium metabolism, with particular reference to milk fever (parturient hypocalcaemia) and grass tetany (hypomagnesaemic tetany) in ruminant animals. Studies of the effects of calcium and phosphorus intakes on parathyroid function indicate that a high calcium diet for dairy cows prepartum is a predisposing cause of milk fever, and recent studies indicate that milk fever can be prevented by limi...

Wittwer, F.; Contreras, P.A.; Silva, N.; Bohmwald, H., 1997: Effects of magnesium supplementation as magnesium oxide in food or magnesium sulphate in water on the prevention of hypomagnesaemic tetany and blood and urine magnesium concentrations in hypomagnesaemic Hereford herds. Two systems of supplementation were tested in 4 grazing Hereford herds between July and December 1993. The herds, with an average of 100 cows and between 7 months pregnant and 2 months post-calving, presented clinical cases of grass tetany, dead c...

Ramage, I.J.; Ray, M.; Paton, R.D.; Logan, R.W.; Beattie, T.J., 1996: Hypomagnesaemic tetany. Hypomagnesaemic tetany (hypomagnesaemic tetany with secondary hypocalcaemia) is a rare inherited form of hypomagnesaemia. Initial reports involved affected males only; however, affected females have also been reported. The case of a child with hyp...

West, D.M.; Bruere, A.N., 1981: Hypomagnesaemic tetany in sheep. The occurrence of hypomagnesaemic tetany in a flock of 2500 mixed age Perendale ewes in New Zealand is described. Twelve ewes died suddenly 2-3 weeks after lambing. They were mainly older twin-rearing ewes and the flock was in poor condition. One...

Rogers, R.; Fairfield, J.E., 1994: Latent hypomagnesaemic tetany. Lancet 343(8888): 63-63