Phytase and its extraphosphoric effects in broiler diets: review
DOI:
https://doi.org/10.52945/rac.v33i1.491Keywords:
performance, exogenous enzyme, inorganic phosphorusAbstract
Broiler`s diets are mainly composed of plant origin products, where most of the phosphorus (P) is in the unavailable form, called phytate. The phytate molecule and the nutrients attached to it cannot be absorbed in the digestive tract without enzymatic degradation by the phytases. Phytases hydrolyze phytate in one molecule of inositol and six inorganic phosphate molecules reducing their antinutritional effects. The magnitude of phytase response may be more significant with increasing inclusion levels and phytate degradation correlates with large increases in P retention, tibia ash concentration, weight gain, feed intake, feed efficiency, retention of nitrogen, apparent metabolizable energy and Ca retention. Therefore, this review has the objective of to characterize phytase and to address aspects related to its efficacy and its extra phosphoric effects in diets for broilers.Metrics
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