Effect of phytase and protease combination on performance, metabolizable energy, and amino acid digestibility of broilers fed nutrient-restricted diets
Romário Duarte Bernardes, Carlos Henrique de Oliveira, Arele Arlindo Calderano, Rafael de Sousa Ferreira, Kelly Morais Maia Dias, Bruno Figueiredo de Almeida, Pedro Eleutério Aleixo, Luiz Fernando Teixeira Albino
Abstract
Three experiments were carried out to evaluate the effect of dietary combination of different enzymes (phytase + protease) on performance, metabolizable energy, and amino acid digestibility of broiler chickens fed diets with nutritional reduction. A total of 1,400, 336, and 384 male chickens were distributed in a completely randomized design, in the experiments of performance, metabolism, and digestibility, respectively. Treatments were divided as follows: positive control (PC), negative control – NC1 (PC minus 0.16% Ca, 0.15% available P (aP), [...]