The Effect of Bactocell and Protexin Probiotics on Performance and Carcass Characteristics of Broiler Chickens

To investigate the effect of bactocell and protexin probiotics on performance and carcass characteristics of broilers, an experiment was conducted with completely randomized design with 3 treatments in 4 replicates and 25 day old female cobb 500 broiler chickens for each replicate for fortytwo days. Treatments include: 1-Control diet (without probiotics), 2-Control diet containing bactocell probiotic, 3-Control diet containing protexin probiotic.Traits major were feed intake ,weight gain, feed conversion ratio, percent of mortality, carcass characteristics and total cost of nutrition were measured at the end of 42 days.The results of this study indicated that feed consumption of control diet was higher but, the highest body weight gain was related to probiotics specially bactocell treated. Also, the best feed conversion ratio belonged to probiotic treated with bactocell and control treatment had the highest percentage of mortality.The results of carcass characteristics indicated that the treatment containing bactocell probiotic has the highest percentage of carcass efficiency and control treatment is the minimum. The highest percentage of abdominal fat related to protexin probiotic and the lowest it is related to treatment containing bactocell probiotic. The highest percentage relative liver related to control treatment and the lowest is related to treatment containing bactocell probiotic. Also, the highest percentage relative breast, thigh, neck and wing and shulder was observed in treatment containing bactocell probiotic. The percentage of relative gizzard between treatments was not significant and finally the lowest feed cost per kg of body weight was observed in the group containing bactocell probiotic.