The aim of the study was to determine the effects of solid-state fermentation of cottonseed meal (FCSM) with Candida utilis on broiler growth performance and toxicity in comparison to unfermented cottonseed meal (CSM) or soyabean meal (SBM, control). In total 150 one-day-old male Cobb 400 broilers were randomly assigned to 3 dietary treatments with 5 replications of 10 birds each. Animals were fed control diet with SBM, diet with CSM: SBM (1:1) and diet with FCSM: SBM (1:1) until 21 day of life. Fermentation decreased free gossypol content in CSM from 583.40 to 191.70 mg kg-1, and degraded tot...