Relationships between Prepartal Dietary Calcium and Phosphorus, Vitamin D Metabolism, and Parturient Paresis in Dairy Cows

1982 ◽  
Vol 112 (3) ◽  
pp. 480-487 ◽  
Author(s):  
Thomas S. Kichura ◽  
Ronald L. Horst ◽  
Donald C. Beitz ◽  
E. Travis Littledike
Keyword(s):  
Vitamin D ◽  
Dairy Cows ◽  
Dietary Calcium ◽  
Vitamin D Metabolism ◽  
Calcium And Phosphorus ◽  
Parturient Paresis

Effects of Dietary Calcium and Phosphorus on Vitamin D Metabolism and Calcium Absorption in Hamster

1996 ◽  
Vol 211 (3) ◽  
pp. 281-286 ◽  
Author(s):  
H. P. Schedl ◽  
T. Conway ◽  
R. L. Horst ◽  
D. L. Miller ◽  
C. K. Brown
Keyword(s):  
Vitamin D ◽  
Calcium Absorption ◽  
Dietary Calcium ◽  
Vitamin D Metabolism ◽  
Calcium And Phosphorus

Effect of dietary calcium and phosphorus vitamin D metabolites 25(OH)D and 1,25(OH)2D, and response to bPTH (1-34) in blue duikers

Zoo Biology ◽  
2002 ◽  
Vol 21 (2) ◽  
pp. 171-183 ◽  
Author(s):  
Beverly L. Roeder ◽  
Gabriella A. Varga ◽  
Robert F. Wideman ◽  
Bruce W. Hollis
Keyword(s):  
Vitamin D ◽  
Dietary Calcium ◽  
Vitamin D Metabolites ◽  
Calcium And Phosphorus

Effect of metabolic acidosis in intestinal absorption of calcium and phosphorus

1980 ◽  
Vol 239 (6) ◽  
pp. G480-G484 ◽  
Author(s):  
U. Gafter ◽  
J. A. Kraut ◽  
D. B. Lee ◽  
V. Silis ◽  
M. W. Walling ◽  
...  
Keyword(s):  
Vitamin D ◽  
Metabolic Acidosis ◽  
Plasma Level ◽  
Intestinal Absorption ◽  
Metabolic Balance ◽  
Vitamin D Metabolism ◽  
Calcium And Phosphorus ◽  
Control Plasma ◽  
P Absorption

To investigate the effect of metabolic acidosis on intestinal calcium (Ca) and phosphorus (P) absorption and vitamin D metabolism, metabolic balance studies and in vitro gut sac uptake of 45Ca and [32P]phosphate were performed in rats maintained on low-Ca and moderately low-P diet and fed NH4Cl for 3 or 9 days and pair-fed controls. Plasma 1,25(OH)2D concentration was measured in the rats fed NH4Cl for 9 days and their controls. Net Ca and P absorption was 87–92% in the acidotic rats and did not differ from control. Moreover, gut sac uptakes of 45Ca and [32P]phosphate were not different from control. Plasma 1,25(OH)2D was higher in the ammonium chloride-fed rats than in controls (213 +/- 44 vs. 110 +/- 12 pg/ml), and serum P was lower in the acidotic animals (4.6 +/- 0.7 vs. 7.6 +/- 0.3 mg/dl). These data indicate that metabolic acidosis does not depress the augmented intestinal absorption of calcium and phosphorus noted during their dietary deprivation nor reduce the plasma level of 1,25(OH)2D.

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