Q Q: 823715579
Q Q: 823715579
Pig zinc needs to be affected by calcium, phosphorus, iron, copper, acid and other effects in the feed. The absorption rate of zinc in piglets was between 60% and 40%. There are many reasons for the deficiency of zinc in pigs. The effective content of zinc in the main material is too low and the use of high copper in recent years; methionine and cysteine will also accelerate the efflux of zinc in the body; liver disease can also cause zinc deficiency.
Therefore, pigs are prone to zinc deficiency, especially in newly weaned piglets. Zinc deficiency in the diet of piglets, mainly as follows: (1) appetite and growth rate was significantly lower. (2) suffer from incomplete keratosis: skin and esophageal epithelial cells become thick or hyperkeratosis, manifested as skin inflammation and scar tissue, hair loss, vomiting, diarrhea, malnutrition. (3) skeletal deformation: the zinc deficiency on cartilage formation is blocked, the phosphatase activity in skeletal reduced, leading to skeletal dysplasia, long bone becomes short thickening.
Zinc deficiency will bring harm to the piglets, zinc excess will also bring harm to the piglets. An excess of zinc can cause piglet thymus, bone marrow and spleen T, B lymphocyte DNA, RNA and protein decreased cell proliferation is reduced, so that the outer peripheral blood granulocyte and macrophage cell decreased phagocytic bactericidal (Jian Jin Zhu, 1996).
Excessive zinc can lead to iron, copper secondary deficiency, resulting in Piglet Anemia and slow growth. But production practice in general will not be caused by too much zinc poisoning, because zinc normal physiological needs between quantity and poisoning scope, pigs can be 20 to 30 times the normal tolerance, and feed in the zinc excess could make piglets anorexia, so as to avoid harm to the body caused by excessive zinc.
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