DOI: https://doi.org/10.5513/JCEA01/27.3.5048
Original scientific paper
Energy and nutrient utilisation of laying hen diets containing graded levels of supplementary xylanase
2026, 27 (3) p. 619-626
Isobel WHITING, Stephen ROSE, Alexander Mackay MACKENZIE, Ahmed AMERAH, Vasil PIRGOZLIEV
Abstract
The effect of graded levels of exogenous xylanase (XYL) at 0, 1500, 2000 or 2500 xylanase units (XU/kg) in laying hen diet containing 150 g/kg wheat distillers dried grains with solubles (DDGS) was examined. A total of 72, twenty-two-week-old, Hy-Line Brown laying hens were allocated to 24 cages, three birds in a cage. Each diet was fed for nine days to six cages following randomisation. Overall, supplementary XYL increased (P < 0.05) dietary apparent metabolizable energy (AME), nitrogen corrected AME (AMEn) and nitrogen retention coefficient. For every 100 XU, dietary AME and AMEn increased by 0.020 MJ and 0.018 MJ, respectively. As expected, there were no differences in bird growth or egg production variables. Further research is warranted to study the impact of graded levels of XYL in laying hen diets formulated to contain greater DDGS inclusion.
Keywords
wheat DDGS, graded levels xylanase, metabolisable energy, laying hens
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