Interplay between grain digestion and fibre in relation to gastro-small-intestinal passage rate and feed intake in pigs

Effects of Dietary Fiber on Growth Performance, Nutrient Digestibility and Intestinal Health in Different Pig Breeds

“…However, a dominant concern for mono-gastric animals (e.g., pigs) is that a high-fiber diet (HFD) is associated with reduced nutrient utilization and low net energy values, as the DF cannot be digested by endogenous digestive enzymes [ 3 , 4 ]. Currently, a number of studies have indicated a positive role of DF in maintaining regular physiological functions of the digestive tract, and a significant reduction in DF consumption is always linked to an increased prevalence of gut diseases such as inflammatory bowel disease [ 5 , 6 ]. It is a well-known fact that the influence of DFs on animals depends on their levels, types, and physicochemical properties [ 7 ].…”

Physicochemical properties, structure, and ameliorative effects of insoluble dietary fiber from tea on slow transit constipation

“…Similarly, there were significant differences between the T-IDF middle-dose group and the model group ( p < 0.05), and there were extremely significant differences between the T-IDF low-dose group and the model group ( p < 0.01). The weight loss effect of T-IDF may therefore be attributed to the fact that T-IDF is a non-digestible substance, and so it can reduce food intake, delay gastric emptying, and increase satiety by filling the stomach ( Ratanpaul et al, 2021 ). In addition, T-IDF absorbs fat, which can reduce the intestinal absorption of fat, promote fat excretion, and prevent excess heat and fat accumulation, thereby achieving weight loss and weight regulation ( Liu et al, 2021 ).…”

Manipulating the kinetics and site of colonic fermentation with different fibre combinations – a review

“…The blue dye method might prove useful when used in conjunction with the digestion and fermentation kinetics of dietary nutrients and fibre. Transit rate in the gut is dependent upon relative concentrations of fibre and the macronutrients in the diet, which determines the relative rates and extents of digestion and fermentation in the gut, thus providing the substrates for the gut bacteria (Ratanpaul et al ., 2019a, 2021). Fibres from cereals have been investigated more than fibres from fruits or vegetables in relation to the impact on bowel regularity and transit times, and fibre independent of its source reduces transit when it is over 48 h (de Vries, 2015; de Vries et al ., 2015, 2016).…”

“…Equipped with the understanding of the interplay between colonic fermentation and transit rates (Fig. 1), and the role of insoluble fibre in shortening the colonic transit rate (Muir et al ., 2004; Ratanpaul et al ., 2019a, 2019b, 2021), it is probable to reduce flatus caused by the colonic fermentation of indigestible leguminous oligosaccharides. A clinical study (Gonlachanvit et al ., 2004) investigating the effect of psyllium (soluble fibre) intake in human subjects reported that psyllium with limited fermentability prolonged gas retention (Fig.…”

“…In human subjects, wheat bran reduced the transit time in the gut and the faecal pH, which was a result of increased faecal SCFA concentration (Lewis & Heaton, 1997). Transit rate in the gut inversely correlated to faecal SCFA concentration and positively correlated with faecal pH (Stephen et al ., 1987; ElOufir et al ., 1996; Lewis & Heaton, 1997; El Oufir et al ., 2000; Ratanpaul et al ., 2020, 2021). Despite being a useful indicator of colonic fermentation, faecal pH has not been a focus of recent research studies (Johnson et al ., 2019; Asnicar et al ., 2021) characterising faecal bacterial species to investigate diet‐microbiome relationships.…”