EFFECT OF KERINCI DUCK’S INTESTINAL PROBIOTIC (Bacillus Circulans And Bacillus Sp) AS FEED ADDITIVE ON BROILER PERFORMANCE

Abstract

The aim of this study was to determine the effectiveness of probiotics Bacillus circulans and Bacillus sp as feed additive on broiler performance. The study was assigned using completely randomised design with 5 treatments and 4 replications. The treatments were R-0 (Basal diet/RB without probiotics and antibiotics), R-1 (RB + 35 ppm of Oxytetracycline in the drinking water), R-2 (RB + 35 ppm of Virginiamycine in the ration). R-3 (RB + 5 cc ofliquid probiotic per litre drinking water) and R-4 (RB + 5 g of probiotics powder per kg ration). The measured parameters were broiler performance, amount of Bacillus circulans, Bacillus sp and Escherichia coli, total cholesterol in meat and antibiotic residue in meat. Results of this study showed that there was no significant effect (P>0.05) on broiler performance (feed intake, body weight gain and feed conversion ratio). However, the treatments highly significant (P<0.0l) have decreased total cholesterol in meat and amount of Escherichia coli. Amount of Bacillus and lactic acid bacteria were highly significant (P<0.0l) increased by the treatments. Oxytetracycline residue was not detected in meat, whereas, virginiamycine was detected. It is concluded that probiotics can be used in the broiler ration as feed additive and effectively decreased total cholesterol of meat, amount of pathogenic bacteria in broiler and prevented the oxytetracycline residue accumulation.