The Effects of Some Alternative Feed Additives for Antibiotic Growth Promoters on the Performance and Gut Microflora of Broiler Chicks

Authors : Necmettin CEYLAN, İbrahim ÇİFTÇİ

Pages : 727-733

View : 17 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this research, the effects of some alternative feed additives for antibiotic growth promoters on performance and gut microflora were examined using 500, one-day-old Ross 508 broiler chicks. Commercial corn-soy-based broiler starter and finisher diets were formulated as basal diets for control treatment. Basal diets were supplemented with an antibiotic growth promoter, a probiotic, a prebiotic insert ignore into journalissuearticles values(mannan oligosaccharide); and a humic-acid-based mixture, respectively. It total, five dietary treatments were employed in the experiment. Live weight, weight gain and feed consumption values were not affected significantly by dietary treatments throughout the experiment insert ignore into journalissuearticles values(P > 0,05);. However, chicks which received diets supplemented with growth promoter, prebiotic, probiotic and humic-acid-based mixture had better feed conversion than the control group in both the 4-6 and 0-6 week periods insert ignore into journalissuearticles values(P < 0.05);. Mortality rate, hot carcass yield, and feed cost for kg live weight gain did not show any significant differences among the groups insert ignore into journalissuearticles values(P > 0.05);. Gut microorganism growth was determined in the 2nd and 6th weeks of age by counting the number of aerobic bacteria, total yeast, coliform, E. coli and Entereccoccus. For both periods, no significant differences among the groups were obtained for those microorganisms. Salmonella and Campylobacter were not isolated in any of the samples. In conclusion, prebiotic insert ignore into journalissuearticles values(mannan oligosccaride);, humic-acid-based mixture and probiotic have the potential to be an alternative to antibiotic growth promoters in broiler diets.
Keywords : Growth promoter, probiotic, prebiotic, humic acids, broiler performance, gut microflora