The Role Effects of Dietary Fiber on Intestinal Microbial Composition and Digestive Physiological Functions of Pigs: A Review

Abstract

The intestinal microbes do not only provide nutrients for their host, but it also contributes to the maintenance of intestinal micro ecological balance, which are essential for ensuring a healthy development of the intestine, dietary fiber is one of the substrates for intestinal microbial fermentation. This can improve the structure of intestinal microflora and is of great significance in maintaining intestinal health. The research on the efficacy of dietary fiber on pig intestinal microbes and the factors affecting the intestinal microbial utilization of dietary fibre in pigs is reviewed, which provides a theoretical basis for further research on the production practice of dietary fiber addition in pig breeding industry. As well, a good digestive physiological environment is essential for pigs to benefit from the nutrients and to increase their productivity. Adding the appropriate amounts of fiber to pig diets plays an important role in regulating the digestive physiology of pig intestinal microflora, digestive tract pH, digestive juice secretion, digestive enzyme activity, digestive tract organs and their morphology. This article reviews the effects of dietary fiber on the digestive physiology of pigs.

Division mechanism of labor in Diqing Tibetan Pigs gut microbiota for dietary fiber efficiently utilization

“…Utilization of dietary ber in pigs mainly depends on fermentation and non-enzymatic hydrolysis by gut microorganisms (Just et al, 1983). The number of ber-degrading strains in pigs is greatly affected by dietary structure (Hussein et al, 2021) and increases with age, having been estimated at 10 8 colonyforming units/g in the gut of growing pigs, which is only one-sixth of that found in adult sows (Varel, 1987;Wang et al, 2006). Other researchers showed that, compared with DLY pigs, the number of fecal microorganisms of DT pigs was higher and more diverse, and the in vitro degradation e ciency of NDF by the fecal microorganisms of DT pigs fed different types of diets was higher .…”