Effects of protease supplementation on the ileal digestibility of amino acids for protein ingredients in broiler chickens.

ABSTRACT: This study aimed to evaluate the effects of dietary protease supplementation on the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of amino acids (AA) in five protein feedstuffs fed to broilers. A total of 504 one-day-old male broiler chickens (Cobb 500) were randomly assigned to 84 cages in Petersime battery cages (6 birds/cage). From days 0 to 14, all birds were fed a commercial starter diet. From day 14 onward, birds were randomly assigned to one of ten dietary treatments in a 5 × 2 factorial design (8 replicates/treatment), consisting of five protein sources, including soybean meal (SBM), expeller-extruded SBM (ESBM), canola meal (CM), corn dried distillers grains with solubles (DDGS), and high-protein DDGS (HP-DDGS), and two protease dosages (0 and 250 m

SUBMITTER: Hong J 

PROVIDER: S-EPMC12329081 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature