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Response of broiler chickens to dietary supplementation of enzymatically hydrolyzed glucan or mannan yeast products


Ahiwe, EU and Omede, AA and Abdallh, ME and Chang'a, EP and Al-Qahtani, M and Gausi, H and Graham, H and Iji, PA, Response of broiler chickens to dietary supplementation of enzymatically hydrolyzed glucan or mannan yeast products, The Journal of Applied Poultry Research, 28, (4) pp. 892-901. ISSN 1056-6171 (2019) [Refereed Article]

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C 2019 The Author(s). Published by Oxford University Press on behalf of Poultry Science Association. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial International (CC BY-NC 4.0) License, (, which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact

DOI: doi:10.3382/japr/pfz047


The effect of varying levels of enzymatically hydrolyzed soluble yeast glucan (YG) and yeast mannan (YM) products on broiler chickens was studied. A total of 486 day-old male Ross 308 broiler chicks were allocated to 9 dietary treatments consisting of YG and YM supplemented at 0.05, 0.10, 0.15, or 0.20 g/kg diet, respectively, and a control without yeast supplementation. Each treatment was replicated 6 times with 9 birds per replicate. The supplements did not affect body weight gain (BWG) and feed conversion ratio (FCR) in the starter phase nor feed intake at any stage. However, birds especially in the 0.20 g YM/kg diet group had improved (P < 0.05) BWG and FCR than the other groups over 024 d and 035 d. There were no treatment effects on visceral organ weight at 10 d, but the small intestine was heavier (P < 0.05) in the 0.20 g YM/kg diet group compared to others at 24 d. Broilers fed 0.15 or 0.20 g YM/kg diet had a significantly (P < 0.05) higher ileal protein digestibility than the control group. Total protein and endogenous enzyme activities were not affected by the supplements. On 35 d, the dressing percentage of broiler carcass and breast weight was significantly (P < 0.05) improved by 0.20 g YM/kg diet. The results from this study confirm the usefulness of YM at 0.15 or 0.20 g/kg diet performance and may be beneficial in improving productivity for broiler chicken farmers.

Item Details

Item Type:Refereed Article
Keywords:nutrition, poultry, yeast cell wall
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Animal production
Research Field:Animal nutrition
Objective Division:Animal Production and Animal Primary Products
Objective Group:Livestock raising
Objective Field:Poultry
UTAS Author:Omede, AA (Dr Apeh Omede)
ID Code:152195
Year Published:2019
Web of Science® Times Cited:3
Deposited By:Agriculture and Food Systems
Deposited On:2022-08-12
Last Modified:2022-10-12
Downloads:4 View Download Statistics

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