Effects of Probiotics on production performance of broiler

Abstract

The present study was conducted to investigate the effects of probiotic on growth performance of broiler chickens from d1-28 days. A total of 96 day-old broiler chicks (Ross 308) was assigned into four dietary treatment groups, i.e D1 (Control), D2 (Poultry Starsol), D3 (Avilac plus) and D4 (Avibac) and each of the treatment replicated three times with eight birds per replicate in a completely randomized block design. The chicks were raised in battery cages all the trial period. Ready-made starter diet (crumble) was fed the birds up to 14 days, after that, grower (pellet) diet fed the broiler from d15 to 28 days. The water treated with probiotics at the rate of Poultry Starsol (1g/L), Avilac plus (1.0 ml/L) and Avibac (1g/L) in D2, D3 and D4 treatment groups, respectively, and supplied the birds’ ad libitum entire the trial period. Data on feed intake (FI), body weight gain (BWG) and feed conversion ratio (FCR) were collected. The data revealed that feed intake of broilers had no difference (P>0.05) between treatment on 28d. Except for first week, BWG was improved significantly (P<0.05; P<0.01) in the birds fed probiotics during d1-21 and d1-38, respectively. Superior FCR values (1.30, 1.34) were observed in the broilers of probiotics supplemented groups from d1-28 days of age. It can be concluded that broilers responded positively as a result of probiotics supplementation in water, and can be raised profitably under farming condition.