Effects of feed form and xylanase supplementation on metabolizable energy partitioning in broiler chicken fed wheat-based diets

Journal of Animal Physiology and Animal Nutrition
Rouhollah NourmohammadiNazar Afzali

Abstract

An experiment was conducted to investigate the effects of feed form and xylanase supplementation on the growth performance, energetic efficiencies, energy partitioning, and nitrogen (N) balance of Ross 308 male broilers fed wheat-based diets. The experiment was conducted as a 2 × 2 × 5 factorial arrangement with 2 levels of feed forms (mash or pellets) and xylanase (0 or 500 mg/kg), and five feeding levels (ad libitum, 85%, 70%, 55%, and 40% of ad libitum intake). Each of the 20 dietary treatments was fed to 5 replicate pens (5 birds/pen) from 22 to 42 days of age. A significant interaction between feed form and xylanase on was observed for average daily feed intake and heat production (p < 0.01). Pelleting and dietary supplementation with xylanase increased average daily gain and feed conversion ratio but decreased (p < 0.05) average daily feed intake. Broilers fed xylanase-supplemented diet ingested and pelleted diet retained more than in those fed the mash form or the diet without xylanase. Xylanase and pellets decreased (p < 0.01) heat production and metabolizable energy intake (MEI), but increased retained energy (p < 0.05). The birds fed xylanase also needed less MEI per gram of N retained than those fed the diets without...Continue Reading

References

Aug 1, 1995·The British Journal of Nutrition·R NietoJ F Aguilera
Feb 1, 1994·Journal of Animal Science·J NobletS Dubois
Oct 9, 2002·The Journal of Nutrition·Jaap van Milgen
Dec 20, 2008·Poultry Science·J D Latshaw, J S Moritz
Feb 26, 2010·Poultry Science·V Rivera-TorresJ van Milgen

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Citations

May 1, 2021·International Journal of Molecular Sciences·Gautam AnandMaya Bar

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