Effect of liquid probiotic administration on performances, carcass and giblet characteristics in commercial broiler chickens

Administration of antibiotic as feed additive in animal nutrition has been highly concerned due to adverse effect of antibiotic. The purpose of this study was to evaluate administration of liquid probiotic on performances, carcass and giblet characteristics in commercial broiler chickens. Totally 100 mixed sex commercial chickens were randomly distributed to four various treatment groups. Each treatment was administrated various concentration of liquid probiotic in the water (P1=control, P2= 1.0 % of liquid probiotic, P3= 1.5 % of liquid probiotic, and P4= 2.0 % of liquid probiotic) in the drinking water. Broiler chickens were fed commercial feed. Parameters evaluated in this study were broilers performances body weight (BW), feed intake (FI), feed conversion ratio (FCR) and water consumption (WTC) for 4 weeks. The results of the study showed that administration of probiotics was no significantly different (P>0.05) on animal performances (BW, FI and FCR) but significantly different on WTC. Drumstick as part of carcass significantly improved (P