Development and Evaluation of a Commercial Direct-Fed Microbial (Zymospore^®) on the Fecal Microbiome and Growth Performance of Broiler Chickens under Experimental Challenge Conditions.

ABSTRACT: Direct-fed microbials (DFM) are added to broiler chicken diets in order to promote the proliferation of beneficial intestinal bacterial populations, which may lead to gains in performance efficiency and, potentially, reduce the level of enteric pathogens in the broiler chickens. The selection and laboratory evaluation of Bacillus subtilis strains as well as the experimental trial results of a novel Bacillus-based commercial DFM product are described. Fifteen wild-type Bacillus subtilis strains were characterized and assayed for their enzyme production capability, spore resistance to pH, salinity, and temperature, and ability to inhibit the growth of E. coli and Salmonella spp. The final DFM formulation was evaluated and compared to an antibiotic growth pr

SUBMITTER: de Souza OF 

PROVIDER: S-EPMC9179881 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature