Abstract
The apparent total tract digestibility and retention of calcium (Ca) and phosphorus (P) and concentrations of digestible energy and metabolizable energy in diets fed to late-gestating sows were not affected by Ca and P levels, but they were increased by dietary supplementation with 1-alpha-hydroxycholecalciferol. There was no interaction between dietary Ca and P and supplementation with 1-alpha-hydroxycholecalciferol.
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