Feeding dietary non-starch polysaccharides supplemented with xylanase could improve the performance of broilers

Venuste Maniraguha1, Jun Seon Hong1, Myunghwan Yu1, Elijah Ogola Oketch1, Young-Joo Yi2, Hyeonho Yun3, Dinesh Jayasena4, Jung Min Heo1,*
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1Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea.
2Department of Agricultural Education, College of Education, Suncheon National University, Suncheon 57922, Korea.
3CJ CheilJedang BIO, Seoul 04560, Korea.
4Department of Animal Science, Uva Wellassa University of Sri Lanka, Badulla 90000, Sri Lanka.
*Corresponding Author: Jung Min Heo, Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea, Republic of. E-mail:

© Copyright 2023 Korean Society of Animal Science and Technology. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


The impact of dietary non-starch polysaccharides (NSP) on performance and carcass traits of broilers fed wheat-bran substituted into corn-soybean meal-based diets supplemented with xylanase was investigated. A total of 280 (7-day-old) Ross 308 broilers were randomly allotted to one of five dietary treatments with 8 replicates, 7 chicks per pen. Treatments were; i) CON: Control diet, ii) CON-X (CON + 3,000 U/kg xylanase), iii) L-X: low NSP (2% wheat bran in CON + 3,000 U/kg xylanase), iv) M-X: medium NSP (4% wheat bran in CON + 3,000 U/kg xylanase), v) H-X: higher NSP (8% wheat bran in CON+ 3,000 U/kg xylanase). Birds fed the H-X diet increased (<italic>p</italic> &lt; 0.05) daily gains, and average daily feed intake and had marginally improved body weights (<italic>p</italic> = 0.074) on day 35. Relatively, the H-X diet tended to increase the average daily gains (<italic>p </italic>= 0.053; <italic>p</italic> = 0.073) of birds during the grower phase (d 24-35) and the entire experimental period (d 8-35), respectively. Moreover, there were no significant differences among treatments in the feed conversion ratio of birds throughout the entire experiment period. Birds fed diets CON-X, L-X, and M-X had improved (<italic>p </italic>&lt; 0.05) the ileal digestibility of energy on d 24 and 35 compared to those fed the H-X diet. Furthermore, birds fed diet CON-X improved (<italic>p</italic> &lt; 0.05) N digestibility on d 24. Improved carcass moisture content and lowered crude fat of leg meat (<italic>p</italic> &lt; 0.05) were noted in birds fed the diet M-X and H-X on d 35, respectively. The intestinal viscosity was reduced (<italic>p </italic>&lt; 0.05) in xylanase-supplemented treatments CON-X, L-X, M-X, and H-X diets when compared to CON. Our results suggest that supplementing 3,000 U/kg xylanase in a higher NSP (8% wheat bran substituted level) diet could improve the intestinal viscosity and growth performance of broilers.

Keywords: Broiler; Digestibility; Non-starch polysaccharide; Wheat bran; Xylanase