Effect of direct-fed microbials on culturable gut microbiotas in broiler chickens: a meta-analysis of controlled trials.

ABSTRACT:

Objective

This meta-analysis was conducted to evaluate the overall effect of direct-fed microbial (DFM) or probiotic supplementation on the log concentrations of culturable gut microbiota in broiler chickens.

Methods

Relevant studies were collected from PubMed, SCOPUS, Poultry Science Journal, and Google Scholar. The studies included controlled trials using DFM supplementation in broiler chickens and reporting log concentrations of the culturable gut microbiota. The overall effect of DFM supplementation was determined using standardized mean difference (SMD) with a random-effects model. Subgroups were analyzed to identify pre-specified characteristics possibly associated with the heterogeneity of the results. Risk of bias and publication bias were assessed.

Results

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SUBMITTER: Heak C 

PROVIDER: S-EPMC6212764 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature