Bifidobacterium.In the intestinal tracts of animals and humans,
bifidobacteria are considered one of the key genera. Their presence in
high numbers is associated with good health status of the host. There
is a general belief that bifidobacteria are helpful in maintaining
appropriate balance of the microbiota in the GIT, reducing the risk of
pathogen infection. Several species are host specific(Biavati and
Mattarelli, 2006). Bifidobacteria are very promising probiotics even if
it is to be considered that probiotic properties are species and/or
strain specific. They are frequently used in food and pharmaceutical
preparations and their application in animal feeding is increasing. Due
to the long history of safe use of bifidobacteria, many species are
proposed for QPS statu