All the nutrients in the feed do not reach the birds. It is either reduced or wasted during handling, processing, storage, and feeding, resulting in deficient in nutrients and become stunted in growth, inferior quality of eggs and prone to diseases.
Spores of the Probiotic microorganisms germinate in the duodenum and transform into vegetative cells and increase their number by repeated multiplication and they produce a sufficient quantity of Lactic acid, thus creating an acidic environment in the intestine. This helps in the growth of indigenous normal microbial flora and helps in bringing back disturbed microbial flora to normalcy and the lactic acid produced prevents the growth of enteric pathogens and putrefactive bacteria.
The probiotics produce efficacious substances as that of vitamin B-Complex and Vitamin-K. They also serve as a source of amino acids to their hosts. They play a role in diminishing the number of pathogenic bacteria. Probiotic microorganisms also assimilate cholesterol into the intestine and do not allow entrance into the bloodstream thereby reducing cholesterol level in blood.