About 85% of the phosphorus (P) in a normal corn-soybean meal diet fed to swine is not utilized because it is bound as phytate phosphate and cannot be digested by the swine. The objective of this study was to evaluate the effects of feeding low phytic acid (LPA corn, LPA soybean meal and the Phytase enzyme on P digestibility and excretion with grower pigs.
This study suggests that the feeding of any combination of LPA corn, LPA soybean meal, and phytase can significantly improve P digestibility while dramatically decreasing P excretion. In addition, the feeding of LPA corn can reduce fecal K excretion while improving overall K digestibility. The modifications of commercial swine diets with LPA corn, LPA soybean meal and/or phytase can significantly improve P utilization and thus reduce the potential negative impacts of swine production on the environment.
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