Marcin Taciak, Ph.D., DSc. is an associate professor working at the Department of Animal Nutrition at The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences. His main scientific goals concern the effects of diet on microbiota activity and composition, and their relation to the large intestine health of laboratory rats and pigs as a model animals for human. He is focused on the impact of indigestible polysaccharides and protein on fermentation intensity and profile.