Abstract
The use of antibiotics in poultry feed as a growth promoter has been restricted in many countries around the world. Consequently, there is a growing interest in finding viable alternatives for growth enhancement and disease prevention in the poultry sector. Probiotics are considered alternative feed additives to antibiotics and can be defined as microbial food supplements which beneficially affect the host by improving its intestinal microbial balance. In this review, the special characteristics of probiotics and their mechanisms of action have been described. Probiotics enhance the growth and production of poultry birds, protect the host against pathogens, enhance the immune system, improve bone strength and fight parasitism. In the following paragraphs the available literature on the uses of probiotics in poultry production is reviewed.
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