Feed additives in broiler diets to produce healthy chickens without in-feed antimicrobial compounds

Abstract : Antibiotics in the diets for poultry were not only used for avoiding and (or) control bacterial infections but for promoting growth of the birds. However, there has been massive concerns of negative effects of antibiotics on human health such as development of antibiotics-resistance bacteria and (or) genes. Subsequently, some of countries (i.e., European Union member of country and South Korea) banned the use of antibiotics as growth promoters in the diets for livestock industries in 2006 and 2011, respectively. Thus, it has become important to develop feeding strategies and feed additives to control and reduce the occurrence of diseases in livestock without using in-feed antibiotics. In this review, therefore, it is attempted to gather information with respect to (1) understanding the digestive physiology and (2) knowledge pertaining to interaction linking feed additives and its physiological and metabolic responses in broiler chickens. Key words : additives, antibiotics, chickens, grwoth, feed