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

Br Poult Sci. 2012;53(6):809-16. doi: 10.1080/00071668.2012.750714.

Abstract

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.

MeSH terms

  • 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

Substances

  • Cellulase