Apparent metabolizable energy, ileal digestibility and bone quality of broiler chickens fed wheat-based diets supplemented with carbohydrases

Published: October 10, 2025

Source : M. AL-QAHTANI 1, M.M. BHUIYAN 1, M.R. BEDFORD 2 and P.A. IJI 1 / 1 School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; 2 AB Vista; 3 Woodstock Court, Marlborough, Wilts SN8 4AN, UK.

Summary

The objective of this study was to assess apparent metabolizable energy (AME), ileal digestibility and bone quality of broiler chickens offered wheat-based diets supplemented with carbohydrases. Birds were raised in cages in climate-controlled rooms. Excreta samples were collected from trays underneath each replicate cage between 20 and 23 days for estimation of AME. Samples of ileal digesta were collected from three randomly selected birds per cage at 24d for estimation of digestibility of amino acids, crude protein, gross energy and starch. At day 35 two birds per cage were randomly selected; the right drumstick was collected for assessment of bone breaking strength and concentrations of minerals in the tibia.

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