Evaluation of the effect of different wheats and xylanase supplementation on performance, nutrient and energy utilisation in broiler chicks

• DOI: 10.1016/j.aninu.2016.06.005
• Publication Date: 2016-07-03T00:03:25Z
• Authors: Gemma González-Ortiz; Oluyinka Olukosi; Michael R. Bedford
• Keywords: Amen

The aim of this study was to evaluate the performance, nutrient utilisation and energy metabolism broiler chicks fed 8 different wheat samples, supplemented or not with xylanase. Seven-hundred sixty eight male broilers (1-day-old) were distributed 16 experimental treatments (6 replicates per treatment). in a factorial arrangement wheats 2 levels xylanase (0 16,000 BXU/kg). predicted apparent metabolisable (AME) samples ranged from 13.0 13.9 MJ/kg all diets formulated contain same amount wheat. Body weight gain (BWG) feed intake (FI) measured at 21 d, as jejunal digesta viscosity, conversion ratio (FCR) calculated. On day 24, one representative bird pen selected calculate whole body energetics. At 3 replicate randomly allocated cages for determinations, continued on until 24-d-old. No interactions observed any performance response variables, ileal viscosity. Xylanase improved BWG reduced FCR viscosity (P < 0.05). Wheat influenced dry matter (DM) increased digestible = 0.04). also 0.05) DM nitrogen retention. Apparent AME corrected (AMEn) subject an interaction whereby 6, which returned lowest AMEn values, responded supplementation remainder did not. Net production efficiency use by xylanase, but affected Despite significant differences between regards their birds, removed variance resulted more homogeneous performance.