It is clear that function of ileum and caecum is different. However, to answer a simple question how these two compartments of intestinal tract differ is not so simple. This why we addressed this topic and what we have found out, you can find in the following paper Volf_Animals.

In this review we reminded characteristics of chicken gut anaerobes and related them to the probiotic potential of individual gut microbiota members. By comparison of already published data we proposed  that bacterial species from the intestinal tract which exhibit any form of adaptation to aerobic environment (spore forming bacteria, aerotollerant or facultative anaerobes) are less efficient in the colonisation of chicken intestinal tract and are therefore less suitable as probiotics intended for a single dose administration.

ReviewIntJMolSci

After extended testing under laboratory conditions and contained environment of experimental animal houses we moved towards verification of probiotic efficacy under real field conditions. Key for the success is the administration of strictly anaerobic cultures. This is why we test different approaches like administration via drinking water, fermented feer or spraying in hatcharies.