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Improving gut health with a second generation MOS


Gut health, what does it mean and what are the benefits of its improvement in animal production?


BY ELIANA DANTAS, BIORIGIN GLOBAL TECHNICAL MANAGER, MONOGASTRIC A


healthy gut is synonymous of a functional gut, a gut that can perform its functions as expected in animal production constitutes good animal health. The functions of a gut encompasses a


number of physiological and functional features, including nutrient digestion and absorption, host metabolism and en- ergy generation, a stable microbiome, mucus layer develop- ment, barrier function, and mucosal immune responses. Improvement of the gut health can be achieved by the use of additives in animal feed, so it is important to highlight that Saccharomyces cerevisiae yeast derivative products such as au- tolysed yeast, products rich in mannan oligosaccharides (MOS) and dietary nucleotides play an important role in gut function- ality and health, through enhanced nutrient digestibility, im- proved villi development, improved gut barrier function and local defences. Considering all these options, a complete feed programme for the different production phases can be defined by adding yeast derivative products to enrich animal nutrition, improve gut health and reduce the use of antibiotics.


Second generation MOS HyperGen (Biorigin) is a second generation MOS that was de- veloped to supply highly soluble mannans, which allows the partial exposition of β-glucans, resulting in a potent prebiotic effect and a local immune-modulating action. In order to un- derstand the benefits of HyperGen, you need to understand MOS mode of actions. It is known that the digestive tract in


Table 1 - The effects of dietry supplementation of HyperGen.


Parameter


Final weight (Kg) Weight gain (Kg)


Average daily gain (Kg) Feed conversion


100


Control Group 9.475 b 1.977 b 0.179 b 1.597 b


Resende et. al. Allen D. Leman Swine Conference, University of Minnesota, 2018. ▶ GUT HEALTH | DECEMBER 2020


HyperGen Group 10.968 a 3.470 a 0.315 a 1.135 a


an animal needs to have well-balanced microflora for normal functioning, and MOS can contribute to reducing the load of pathogenic bacteria and enhancing the growth of beneficial bacteria. The adhesion of bacteria with harmful effects for an- imals is carried out by type-1 fimbriae (Ex.: Salmonella and E. coli), which contains mannose-specific lectins, and it has a high affinity on intestinal mucosa. MOS works by binding with type-1 fimbriae, so bacteria move through the intestine without colonising. Researchers also observed an increase in the synthesis of goblet cells, that are present in the villi mem- brane of the intestine and are responsible for secreting mu- cins, which competitively bind to the bacteria and support the clearance of pathogens from the intestine. MOS was also related to long villi and shallow crypts in the intestine, so a larger surface area helped with the absorption of nutrients and improved animal performance.


Pathogens associated molecular patterns Another MOS effect is the improvement of cellular, humoral and mucosal immunities. In the intestine are present a variety of macrophages as components of gut-associated lymphoid tissue (GALT), that recognise pathogens by a unique type of molecules that are only on microbes, called ‘pathogens asso- ciated molecular patterns (PAMP), present in MOS and others yeast cell wall components. Consequently, MOS bind with the PAMP receptors present on defence cells of GALT and then triggers the immune system. A study was carried out to investigate the impact that HyperGen had on gut health and performance in weaned piglets challenged with E. coli K88 and supplemented with 0.1% of HyperGen for 11 days (Table 1). Piglets challenged and supplemented with the second generation MOS had a greater final body weight and ADG than challenged and non- supplemented animals. The supplementation improved the FCR of piglets and enhanced the number of proliferating cells in the lymphoid tissues of the ileum and mesenteric lymph node, and it was also observed longer intestinal villi.


Improved piglet performance In conclusion, the supplementation of the soluble prebiotic improved weaned piglets’ performance, especially those under challenged conditions. It was proven that the potent prebiotic effect of HyperGen had a positive impact on gut health which encouraged natural intestinal defences and performance.


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