Effects of probiotic and organic acid on the performance of broiler chickens

Pervin, MST. Gulshanara, Hossain, Md. Shahadat, Morshed, Mohammad Golam, Haque, Md. Samiul and Mahbub, A.S.M. 2020. Effects of probiotic and organic acid on the performance of broiler chickens. Indian Journal of Poultry Science, 55(3): 199-203.An experiment was conducted with 120 day old straight run broiler chicks to evaluate the effect of supplementation of protexin, organic acid and combination of the two on the performance of broiler. The dietary treatments were control group (T₁), 1 g protexin/5 lit of water (T₂), 3 ml organic acid/lit of water (T₃) and 0.5 g protexin/5 lit of water + 1.5 m1 organic acid/lit of water (T₄). 2068 g, 2225 g, 2167 g and 2300 g body weight were gained at 35 days of age in T₁, T₂ T₃ and T₄ group respectively and the difference were statistically significant at 3^rd- 4^th and 5^th week. Feed consumption during the experimental period of 35 days were non-significant at 7, 14, 21 and 28 days whereas, significantly difference was found at 35 days of age where treatment group T₁ showed higher consumption. Feed conversion ratio was significantly different at 7, 21,28 and 35 days of experiments whereas non-significant at 14 days of age. No mortality was observed in any treatment throughout the experimental period. So livability was 100%. The supplementations of additives increased the production cost of broiler rearing slightly but improve the net return of broiler chickens.