Conclusion
It has been suggested that antibiotic
alternatives cause reduce pathogenic bacteria
in digestive tract of broiler chickens which can
help to improve intestinal health of these birds.
Moreover, the above mentioned feed additives
reduce the levels of serum lipids and induce
broilers immune response. A beneficial effect
of additives on the villous parameters of
chickens could be due to better utilization of
feed and improve the microflora and reduce
harmful bacteria of the gut. According to
results of this experiment it can be
recommended that probiotics additives, herbal
extracts and organic acids can be used as
antibiotic alternatives in broilers feed