Performance and morphology of intestinal mucosa of broilers fed mannan-oligosaccharides and enzymes

Abstract

Performance and morphology of intestinal mucosa of broilers fed mannan-oligosaccharides and enzymes ABSTRACTThe performance and the morphology of intestinal mucosa of broilers fed mannan-oligosaccharides (MOS) and enzymes (E) from one to 21-day-old were evaluated using 750 one-day-old chicks, assigned to a 2 x 2 + 1 factorial design -two levels of MOS (0 and 0.1%), two levels of E (0 and 0.05%) plus an antibiotic positive control diet -performing five treatments of five replications each one. MOS x E interaction was significant for both duodenal (P<0.002 and P<0.002) and ileal (P<0.04 and P<0.05) perimeters and heights of villi, being the values lower in the mucosa of birds fed non-supplemented diets. MOS based-diet determined an increase on perimeter of jejunal villi (P<0.05). Compared with antibiotic treatment group, villi perimeter (P<0.02) and height (P<0.005), and crypt depth (P<0.02) of duodenum of broiler fed MOS were higher. Broilers fed MOS and/or E did not perform better, but higher villi perimeter and height were observed in the intestinal mucosa of those birds.

Effects of prebiotics and probiotics on the performance and bacterial colonization of broiler chickens

“…On the other hand, antibiotic supplementation caused a decrease in ileal villi height. Similar results were reported by Oliveira et al (2008), who found that antibiotic supplementation caused low villi height. They explained this by the suppressing effect of the antibiotic on beneficial bacteria in the gut, such as Lactobacillus and Bifidobacteria.…”

Performance of broilers experimentally inoculated with Salmonella Typhimurium and fed diets with addition of lactulosis

“…Considering that lactulosis is a non-digestible disaccharide with prebiotic action, the results were different from the results obtained by Oliveira et al (2008), who utilized a mannan-oligosaccharide in diet for broilers and observed increment in jejunum villous height.…”

“…Salmonellae belongs to the group of enteropathogens that are commercial barriers to poultry products and present extremely important serovars to public health (Marcus et al, 2007;Perdoncini et al, 2011). In these serovars, S. Typhimurium stands out as a source of feed toxinfections in humans (Fernandes et al, 2006), and its control is officially recognized by the Brazilian Plan of Poultry Health Control.…”

Morphological and HistochemicalStudy of Small Intestine InIndigenousDucks (Anasplayrhynchos)

“…The intestinal epithelial cells are change constantly and compensate villi cells losses through proliferation and maturation inside crypts and upward migration. The crypts depth was correlated with the intestinal cells turnover rate and the increase in crypts depth indicates the need for enterocyte replacement and higher tissue turnover [31]. The crypt depth may be an important factor that determines the ability of the crypts to sustain the increase in the villus height as well as to maintain the villus structure [32].The ratio of villus 30.09 ± 1.90 The different letters in one raw denoted that there were significant differences between male and female indigenous ducks, in all traits at p≤0.01.…”