Probiotics (bacteria or yeasts) were defined by the Food Agricultural Organization (FAO) and the World Health Organization
(WHO) joint report as live microorganisms which when administered in adequate amounts (in food or as a dietary supplement)
confer a health benefit on the host. The best-demonstrated potential clinical benefits of probiotic agents are in the prevention and
management of acute diarrhea. Evidences are being compiled on
their potential benefits in atopic diseases. Their beneficial effects
seem to be strain specific. The yeast strainW. anomalusLV-6, isolated from the fermented excreta of broilers, showed excellent
characteristics to be further evaluatedin vivostudies as a probiotic
candidate in poultry production.