The role and significance of inulin in the feeding of farm animals

Abstract

Restrictions on the use of antibiotics in Regulation (EC) No 1831/2003 of the European Parliament and of the Council have increased the need for preventive measures in animal nutrition. The positive dietary effects of inulin have been documented since the early 1900s. Although today's literature often gives different results on the performance-enhancing properties of chicory extract, its effect on the body cannot be ignored. Inulin affects the composition of the gut microbiome. Increased microbial digestion increases the volatile fatty acid concentration and decreases the intestinal pH, which inhibits the growth of pathogens in the digestive tract. It affects the intestinal morphology, the body's immune system, and its clinical chemical parameters. The measurable changes depend on the structure of inulin, the species, age, health and nutritional status of the animal. Observations in piglets have shown a reduction in feed efficiency and nitrogen metabolism at certain doses. In the light of scientific results, the practical role of inulin as a dietary supplement to improve health is well established, but the precise study of upper limits and the structure of efficiently functioning fructan is still a challenge for science.