EVALUATION OF OPTIMUM LEVELS OF BIOTRONIC® SE AS ALTERNATIVE FOR OXYTETRACYCLINE ON PERFORMANCE OF BROILER CHICKENS
Keywords:Broiler chickens, Antibiotics, Oxytetracycline, Biotronic® SE, Organic acid and Performance parameters
The study was conducted to evaluate the efficacy of optimum levels of Biotronic ® SE as an alternative to the use of Oxytetracycline on growth performance, carcass characteristics and digestibility of broiler chickens. A total of 396 Ross Day old broiler chicks were randomly allotted to six (6) dietary treatments with 22 chicks/replicate in a completely randomized design. Treatments were as follows: Treatment one was the negative control (NC) diet without Biotronic® SE, while treatments 2, 3, 4, 5 contained 100, 200, 300, 400 and 500g Biotronic® SE and treatment 6 positive control (PC) contained 100g Oxytretracycline. The diets were formulated to meet standard requirements for starter and finisher broiler chickens. Feed and water were given to the birds ad libitum for the 8-weeks experimental period. Growth parameters measured were average body weight gain, feed intake, feed conversion ratio, carcass characteristics and nutrient digestibility percent. The results at the starter phase showed that 500g Biotronic® SE supplementation (P<0.05) had (1.7) feed conversion ratio (FCR) and feed cost per kilogram gain (?151.42) values. The finisher phase result showed no significant (P>0.05) difference in weight gain. Birds on 400g Biotronic® SE had a lower (P>0.05) FCR (2.02) and feed cost per kilogram gain ((?1159.36). The dressing percentages of carcass were similar both in the 500g Biotronic® SE and Oxytetracycline treatments. Prime cuts: breast, drumstick and wings were better in birds on diets containing 400g Biotronic® SE. The crude protein values (86.54, 89.31 and 94.50 %) for nutrient digestibility was significantly (P<0.05) higher in the 200, 300 and 400g Biotronic® SE groups respectively. The crude fibre (76.43 %) and ether extract (89.82 %) values were significantly (P<0.05) lower across the treatment groups. The use of Biotronic® SE as growth promoter gave a result comparable to the antibiotic treatment and better than the negative control. Therefore, Biotronic® SE can be use at 500g /100kg at the starter phase and 400g/kg at finisher phase as an alternative to antibiotics in broiler diets.