title: Interactions of dietary cation-anion balance and phosphorus: effects on blood, bone and faecal phosphorus concentration in dairy calves.
abstract: Dietary levels of cations and anions are shown to have an effect on concentrations of phosphorus (P) in blood, bone and faeces of dairy calves between 9 and 19 weeks of age. Calves fed diets high in anions, demonstrated higher concentrations of P in blood and faeces than calves whose diets were high in cations, and at the same time demonstrated lower concentrations of P in bone. Compared to diets with high cation levels, diets high in anions produced significantly (p less than 0.05) higher concentrations of total P in the faeces at different stages in the experiment, higher serum inorganic phosphorus (SiP) concentrations and lower P concentrations in the bone, which were significant at the end of the trial (P less than 0.06). When the diet was low in P (0.22%), the cation-anion balance of the diet seemed to have the greatest effect, so that the interaction of dietary P and dietary cation-anion balance (DCAB) was responsible for changes in blood, bone and faeces.
authors: Department of Animal Health, School of Agriculture, University of Bophuthatswana, Mmabatho.
authors: D E
authors: DE
authors: Beighle
authors: W B
authors: WB
authors: Tucker
authors: R W
authors: RW
authors: Hemken
mesh_terms: D000821:Animal Feed / Q000592:standards; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000838:Anions; D001842:Bone and Bones / Q000737:chemistry; D002412:Cations; D002417:Cattle / Q000378:metabolism*; D003612:Dairying; D005243:Feces / Q000737:chemistry; D005260:Female; D008297:Male; D010758:Phosphorus / Q000097:blood / Q000378:metabolism*; D016226:Phosphorus, Dietary / Q000008:administration & dosage*
chemical_list: D000838:Anions; D002412:Cations; D016226:Phosphorus, Dietary; D010758:Phosphorus