Concentration of dietary calcium supplied by calcium carbonate does not affect the apparent total tract digestibility of calcium, but decreases digestibility of phosphorus by growing pigs

A regional experiment was conducted to test the hypothesis that the concentration of dietary Ca does not affect the digestibility of Ca or P in diets fed to growing pigs. Six diets based on corn, potato protein isolate, cornstarch, and soybean oil were formulated. All diets also contained monosodium...

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Bibliographic Details
Published in:Journal of animal science 2011-07, Vol.89 (7), p.2139-2144
Main Authors: STEIN, H. H, ADEOLA, O, CROMWELL, G. L, KIM, S. W, MAHAN, D. C, MILLER, P. S
Format: Article
Language:English
Subjects:
Animal productions
Animals
Biological and medical sciences
Calcium Carbonate - chemistry
Calcium Carbonate - pharmacology
Calcium, Dietary - administration & dosage
Calcium, Dietary - analysis
Calcium, Dietary - pharmacology
Digestion - drug effects
Dose-Response Relationship, Drug
Fundamental and applied biological sciences. Psychology
Male
Phosphorus - metabolism
Swine - growth & development
Terrestrial animal productions
Vertebrates
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Summary:A regional experiment was conducted to test the hypothesis that the concentration of dietary Ca does not affect the digestibility of Ca or P in diets fed to growing pigs. Six diets based on corn, potato protein isolate, cornstarch, and soybean oil were formulated. All diets also contained monosodium phosphate, crystalline AA, salt, and a vitamin-micromineral premix. The only difference among the diets was that varying concentrations of calcium carbonate were used to create diets containing 0.33, 0.46, 0.51, 0.67, 0.92, and 1.04% Ca. All diets contained between 0.40 and 0.43% P. Six universities participated in the experiment and each university contributed 2 replicates to the experiment for a total of 12 replicates (initial BW: 23.1 ± 4.4 kg). Pigs were placed in metabolism cages that allowed total, but separate, collection of feces and urine from the pigs. Pigs within each replicate were randomly allotted to the 6 diets and fed experimental diets for 14 d with urine and feces being collected over a 5-d period. Diets, feces, and urine samples were analyzed for Ca and P, and the daily balance, the apparent total tract digestibility (ATTD), and the retention of Ca and P were calculated. Results indicated that intake, fecal excretion, and urinary excretion of Ca increased (linear, P
ISSN:0021-8812
1525-3163
DOI:10.2527/jas.2010-3522