Effects of a mono-component endo-xylanase supplementation on the nutritive value of wheat-based broiler diets

• Published in: British poultry science Vol. 53; no. 6; pp. 809 - 816
• Main Authors: Francesch, M., Pérez-Vendrell, A.M., Broz, J.
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis Group 01.12.2012
• Subjects: Animal Nutritional Physiological Phenomena; Animals; Cellulase - administration & dosage; Chickens - growth & development; Chickens - physiology; Diet - veterinary; Dietary Supplements - analysis; Digestion; Dose-Response Relationship, Drug; Energy Metabolism; Eurotiales - chemistry; Male; Nutritive Value; Triticum - chemistry
• ISSN: 0007-1668; 1466-1799
• DOI: 10.1080/00071668.2012.750714

1. Two trials were conducted to evaluate the effects of a mono-component thermostable endo-1,4-β-xylanase derived from Thermomyces lanuginosus on the nutritive value of wheat-based broiler diets. In a 5-week growth trial, the efficacy of xylanase supplementation at 0, 100, 150, 200, 400 and 4000 FXU/kg diet was evaluated. A short-term balance trial was carried out according to a 4 × 2 factorial arrangement of treatments, involving 4 wheat cultivars and endo-xylanase at 0 or 200 FXU/kg. 2. In the growth trial, enzyme supplementation from 0 to 400 FXU/kg reduced feed intake and improved feed conversion linearly. Digesta viscosity was significantly reduced by all enzyme inclusion levels by 49·6-56·9%, in a quadratic manner. 3. In the balance trial, xylanase supplementation resulted in a significant improvement of protein, lipid and dry matter apparent digestibility coefficients of diets, accompanied by improved dietary AME N values. There was a significant wheat × enzyme interaction on AME N and lipid digestibility. There was a significant effect of wheat cultivar on dry matter digestibility.