Mg for Ruminant Animals
Disturbances in magnesium metabolism can have serious health effects on the animal, and magnesium deficiency (hypomagnesaemia) can be a life-threatening condition.
A common example of hypomagnesaemia in ruminant animals is a disease known as grass tetany, which primarily afflicts dairy cows. Grass tetany, or the grass staggers as it is commonly called, is caused by a decrease in the plasma magnesium concentration and was first described by Sjollema. The normal blood serum level of magnesium in cows has been reported to be 1.2 and 3.8 mg/100ml. Magnesium homeostasis is not regulated by hormonal system. The concentration of magnesium in the plasma depends upon the continuous absorption of magnesium from the gastrointestinal tract inflow and the requirements for maintenance, milk production, growth, and pregnancy (outflow). The plasma concentration of magnesium remains normal as long as the magnesium inflow exceeds the outflow, the difference being excreted in the urine. If the reverse situation is in effect, then magnesium deficiency will occur.
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Mg for Poultry, pigs and fishes
Feedstuffs commonly used for poultry generally contribute 1100-2400 ppm to the ration, so when the value is down to 500 ppm, dietary magnesium is recommended for growing turkeys, ducks, chicks and more other poultry species.
Information concerning the magnesium nutrition of swine is not as extensive as that for ruminant animals. Magnesium deficiency in swine is not as common as it is in cows since the feedstuffs making up the ration typically have well over 1000 ppm mg. Growing pigs fed magnesium-deficient diets developed signs of hyperirritability, a reluctance to stand, reduced growth tetany, and death. It was concluded from this research that newly weaned pigs required 400-500 ppm per day Mg.
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What we can provide for animal feed grade:
