R. Bras. Zootec.12/May/2026;55:e20240230.
Toward precision phosphorus nutrition in broilers: insights from a meta-analytical model assessment
Ariane Miranda
, Carolina Haubert Franceschi
, Alexandre Bonadiman Mariani
, Jéssica Pereira Silva
, Danrlei Velasque Nogueira
, Gabriela Miotto Galli
, Marcos Kipper
, Ines Andretta
ABSTRACT
This study used a systematic review and meta-analysis to evaluate a model for estimating the available phosphorus (aP) requirements of broilers. Databases (PubMed, Scopus, and Web of Science) were searched using the PICo methodology, including 90 studies from 1997–2023. The variables analyzed included performance (average daily gain (ADG) and feed efficiency (FE)) and bone traits (tibia P, ash, and shear force), expressed relative to the highest response in each study. The aP levels were compared to the Brazilian Tables for Poultry and Swine (BT), which were considered 100% aligned with the BT recommendations. Nonlinear regressions assessed the responses by phase (starter, grower, and finisher). In the starter phase, aP intake to maximize ADG and FE was 99% of the BT recommendations, with similar results for FE during the grower phase (99%), indicating slight overestimation. However, the ADG requirements in the grower and finisher phases were underestimated (102% of BT recommendations). The FE in the finisher phase matched BT recommendations (100%). Bone traits required a slightly higher aP intake (>100%) across all phases. The BT model reliably estimates aP needs, but may require additional supplementation to optimize bone mineralization.
Keywords: meta-analysis; minerals; modeling; nutrition; poultry; systematic review
