Saccharomyces cerevisiae as Natural Growth Promoter in Broilers: Meta-analysis of Performance and Meat Quality

The global demand for meat is increasing, and recent bans on antibiotic growth promoters (AGPs) have heightened the need for sustainable, effective alternatives in poultry production. Probiotic yeast Saccharomyces cerevisiae has emerged as a promising natural growth promoter in this context. This meta-analysis aims to evaluate the effects of S. cerevisiae on growth performance, feed efficiency, and meat quality (both physical and chemical) by synthesizing findings from previously reported studies. This meta-analysis used data from PubMed and Scopus to screen 377 studies and identify 14 relevant trials published from 2000 to 2025. It examined the effects of S. cerevisiaeon broiler chicken growth and meat quality parameters (body weight (BW), feed conversion ratio (FCR), color, pH, dressing rate, cooking/drip loss, shear force, and water holding capacity [WHC]). Randomized controlled trials were analyzed with OpenMEE software to determine standard mean differences and heterogeneity. S. cerevisiae supplementation significantly improved broiler BW (standard mean difference [SMD]=0.446, P