title: Determination of calcium, phosphorus, and magnesium values in rib bones from clinically normal cattle.
abstract: Mean phosphorus (P) content in bovine rib bone was 102.9, 108.3, and 182.7 mg/g of bone on fresh, dry, and ash weight bases, respectively. Values for calcium (Ca) were 194.3, 203.7, and 344.6 mg/g, respectively, and for magnesium (Mg) were 5.3, 5.5, and 9.4 mg/g, respectively. Mean percentage of ash in rib bone was 59.12%. Expected concentrations of Ca, P, and Mg were determined on fresh, dry, and ash weight bases and for 3 age groups, 3 breeds, and bulls, females, and steers. On an ash weight basis, cattle 6 to 18 months old had 185.74 mg of P/g, 372.52 mg of Ca/g, and 12.37 mg of Mg/g. Those 19 to 36 months old had 182.02 mg of P/g, 322.35 mg of P/g, and 8.09 mg of Mg/g. Those > 36 months old had 174.80 mg of P/g, 340.36 mg of Ca/g, and 6.62 mg of Mg/g. Steers had 183.93 mg of P/g, 352.73 mg of Ca/g, and 10.15 mg of Mg/g. Females had 178.47 mg of P/g, 320.28 mg of Ca/g, and 6.5 mg of Mg/g. Males had 176.15 mg of P/g, all on an ash weight basis. Dairy breeds were found to have 186.08 mg of P/g, 351.25 mg of Ca/g, and 10.47 mg of Mg/g. Cattle of mixed breeding had 177.42 mg of P/g, 341.28 mg of Ca/g, and 6.54 mg of Mg/g. The Africander breed of beef cattle had 167.07 mg of P/g, all on an ash weight basis.
authors.affiliation: Department of Animal Health, School of Agriculture, University of Bophuthatswana, South Africa.
authors.forename: D E
authors.initials: DE
authors.lastname: Beighle
authors.forename: P A
authors.initials: PA
authors.lastname: Boyazoglu
authors.forename: R W
authors.initials: RW
authors.lastname: Hemken
authors.forename: P A
authors.initials: PA
authors.lastname: Serumaga-Zake
mesh_terms: D000375:Aging / Q000502:physiology; D000818:Animals; D001846:Bone Development; D001842:Bone and Bones / Q000737:chemistry*; D002118:Calcium / Q000032:analysis*; D002417:Cattle; D005260:Female; D008274:Magnesium / Q000737:chemistry*; D008297:Male; D009919:Orchiectomy; D010758:Phosphorus / Q000032:analysis*; D012016:Reference Values; D012272:Ribs / Q000737:chemistry*; D012737:Sex Factors
chemical_list: D010758:Phosphorus; D008274:Magnesium; D002118:Calcium