Feed endoxylanase type and dose affect arabinoxylan hydrolysis and fermentation in ageing broilers

Despite the general use of endoxylanases in poultry feed to improve broiler performance, abundance different endoxylanase products and variable response their application field prevent a clear understanding functionality vivo. To gain insight into this functionality, we investigated impact type (Belfeed from Bacillus subtilis versus Econase XT Nonomuraea flexuosa) dose (10, 100, 1,000 mg/kg) combination with age on arabinoxylan (AX) hydrolysis fermentation broilers (Ross 308) fed wheat-soy based diet. In digestibility trial performance trial, total 1,057 one-day-old chicks received control diet or 1 6 supplemented diets with, respectively, 5 replicate cages 8 pens per dietary treatment trial. The AX content structure, values short-chain fatty acids produced were analysed at level ileum, caeca excreta d 11 36. Endoxylanase supplementation resulted more extensive solubilisation wheat reduction intestinal viscosity compared (P < 0.05). A high was, however, required obtain increased along gastrointestinal tract against 0.001). Depending endoxylanase, pool distinct physicochemical properties was created. B. created large soluble thereby increasing ileal an N. flexuosa mainly triggered caecal young broilers, by delivering easily fermentable substrates low degree polymerisation = 0.03). effects particularly present (d 11). From study, it is that added determine nature formed. These, turn, affect interplay between compounds microbiota, hence dictating digestion ages outcomes towards slaughter age.