title: Regulation of calcium and phosphorus homeostasis in the dairy cow.
abstract: This paper describes the mechanism of calcium and phosphorus homeostasis in dairy cows in an effort to provide a clearer understanding of the rationale behind current management and supplementation practices. Specifically addressed is the need to keep prepartum dietary calcium intake at less than or equal to 50 g/d to minimize the incidence of milk fever. Also discussed is the need to increase National Research Council recommendations for postpartum dietary calcium from 2.7 to 3.4 g/kg milk. This is particularly important during the first 1 to 2 mo of lactation to maintain calcium balance.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001842:Bone and Bones / Q000378:metabolism; D002118:Calcium / Q000378:metabolism*; D002417:Cattle / Q000378:metabolism*; D002418:Cattle Diseases / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control; D005260:Female; D006706:Homeostasis; D007408:Intestinal Absorption; D007774:Lactation; D010319:Parturient Paresis / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control; D010758:Phosphorus / Q000378:metabolism*; D011247:Pregnancy; D014807:Vitamin D / Q000378:metabolism
chemical_list: D014807:Vitamin D; D010758:Phosphorus; D002118:Calcium