Does release of encapsulated nutrients have an important role in the efficacy of xylanase in broilers?

• DOI: 10.3382/ps/pew002
• Publication Date: 2016-02-17T03:40:03Z
• Authors: A. Khadem; M. Lourenço; E. Delezie; L. Maertens; A. Goderis; R. Mombaerts; M. Höfte; V. Eeckhaut; F. Van Immerseel; G.P.J. Janssens
• Keywords: Prebiotic; Digestion

The non-starch polysaccharides (NSPs) in cell walls can act as a barrier for digestion of intracellular nutrients. This effect is called "cage effect." Part the success fibrolytic enzymes broiler feed assumed to be attributed cage reduction. Further, changes viscosity and potential prebiotic action should also considered. aim this study was gain insight into relative importance xylanase efficacy broilers. Using 2×2 factorial design, 24 pens with 30 Ross 308 male chicks were fed corn-soy based diets consisting normal freeze-thawed (5 d at -18°C) corn, both without xylanase. freeze-thaw method used eliminate effect, whereas corn-based diet exclude effects. Body weights (BW), intake (FI), conversion ratio (FCR) determined 13, 26, 39. A balance executed end growing phase. These birds euthanized 34 (non-fasted) determine digesta, blood metabolites, intestinal morphology, microbiota composition. During finisher period, there significant interaction between enzyme supplementation freeze-thawing FCR, which FCR improved by corn tended corn+enzyme compared control group. improvement performance (finisher period) coincided increased gut absorption glucose (based on postprandial plasma concentrations) number Clostridiumcluster IV caecum, agreed higher villus height. In addition, inclusion significantly glycine triglycerides concentration, led elevated bacterial gene copies butyryl CoA:acetate CoA-transferase, suggesting addition through more than just applied model managed rule out using it possible isolate dietary corn.