Inclusion of excess dietary calcium in diets for 100- to 130-kg growing pigs reduces feed intake and daily gain if dietary phosphorus is at or below the requirement

Journal of Animal Science
L A MerrimanH H Stein

Abstract

An experiment was conducted to test the hypothesis that the requirement for standardized total tract digestible (STTD) Ca by pigs from 100 to 130 kg depends on the concentration of STTD P in the diet. Ninety pigs (average initial BW: 99.89 ± 3.34 kg) were randomly allotted to 15 experimental diets. Each diet was fed to 6 replicate pigs using a randomized complete block design. Fifteen corn and soybean meal-based diets were formulated and phytate and Na were constant among treatments. Diets were formulated using a 3 × 5 factorial design with diets containing 0.11%, 0.21%, or 0.31% STTD P and 0.12%, 0.29%, 0.46%, 0.61%, or 0.78% total Ca (0.08%, 0.18%, 0.29%, 0.38%, or 0.49% STTD Ca). The P concentrations ranged from 48 to 152% of the STTD P requirement for 100- to 125-kg pigs and the Ca concentrations ranged from 27 to 173% of the total Ca requirement. Experimental diets were fed for 28 d and pigs were individually housed. Pig and feeder weights were recorded at the beginning and at the conclusion of the experiment to calculate ADFI, ADG, and G:F. On d 28, all pigs were euthanized and the right femur was extracted. Ash, Ca, and P concentrations were determined from the de-fatted, dried femurs. Results indicated that as dietary c...Continue Reading

References

May 1, 1983·Journal of Animal Science·P F Maxson, D C Mahan
Apr 4, 2006·Journal of Animal Science·K R RobbinsL L Southern
Dec 12, 2012·Journal of Animal Science·R C Sulabo, H H Stein

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Citations

Jul 2, 2020·Animal : an International Journal of Animal Bioscience·M LautrouM P Létourneau-Montminy
Aug 6, 2019·Journal of Animal Science·Carine M VierJason C Woodworth
Aug 4, 2019·Journal of Animal Science·Carine M VierJason C Woodworth

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