Prevention of Milk fever: Nutritional Approach
نویسندگان
چکیده
The use of negatively balanced cation-anion rations during the late dry or prepartum period requires excellent monitoring and management. The cows must be separated from the remaining herd and fed a total mixed ration as a group. Lower plasma calcium (Ca) will stimulate the Parathyroid hormone (PTH) and 1-hydroxylase system to increase intestinal absorption of Ca and bone resorption –reduce incidence of milk fever. The incidence of milk fever was increased simply by increasing the potassium (K) concentration in pasture Diet high in K or sodium (Na) -alkalinize the blood decreased bone Ca resorption and renal production of 1, 25-(OH)2 vitamin D, increase incidence of milk fever. Inadequate supply of magnesium (Mg) in dry period reduce the ability of a cow to mobilize Ca at parturition. Anionic salts (-ve DCAD) prevents milk fever by acidifying the blood to restore tissue responsiveness to the PTH.
منابع مشابه
A novel model to explain dietary factors affecting hypocalcaemia in dairy cattle.
Most dairy cows exhibit different degrees of hypocalcaemia around calving because the gestational Ca requirements shift to the disproportionately high Ca requirements of lactation. Ca homeostasis is a robust system that effectively adapts to changes in Ca demand or supply. However, these adaptations often are not rapid enough to avoid hypocalcaemia. A delay in the reconfiguration of intestinal ...
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