Mechanistic model of metabolic use of dietary phosphorus and calcium and dynamics of body ash deposition in growing pigs: version 2.0

摘要

A more precise estimation of phosphorus and calcium requirements in growing pigs will reduce these minerals utilization and excretion and increase the sustainability of the current phase-feeding systems.Precision feeding may reduce phosphorus (P) and calcium (Ca) excretion and enhance sustainability but requires an accurate estimate of P and Ca requirements. Given the complexity of P metabolism because of multiple interactions, response criteria, and production objectives, mathematical modeling has been chosen to represent it. The aim of this paper is to update an existing model and evaluate its accuracy to predict growing pig body Ca and P repartition with the purpose of giving recommendations.