Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/62267
Title: Improving sorghum digestion in broilers by targeting fermentation of xylan
Contributor(s): Morgan, Natalie K  (author)orcid ; Wallace, Andrew  (author); Bedford, Michael R  (author)
Publication Date: 2022-09
Early Online Version: 2022-04-25
Open Access: Yes
DOI: 10.1016/j.aninu.2022.03.004
Handle Link: https://hdl.handle.net/1959.11/62267
Abstract: 

This study was to examine if it is possible to accelerate sorghum digestion in broiler chickens by targeting fermentation of the xylan. Cobb 500 broilers (n = 960, 80 birds per treatment) were fed 12 sorghum-soybean meal-based dietary treatments fed as 3 phases (starter d 0 to 12, grower d 13 to 23, finisher d 24 to 35), with 8 replicate pens of 10 birds per treatment. For half of the treatments (n = 6), 10% of the sorghum in the diet was directly replaced with 10% wheat bran, as a source of fermentable fibre. The diets were supplemented with either 0, 50 or 2,000 mg/kg xylo-oligosaccharides (XOS), with or without xylanase application. Body weight gain (BWG), feed intake (FI) and feed conversion corrected for mortality (cFCR) was determined at d 0 to 35, and male and female body weight were measured on d 35. On d 35, ileum and caeca samples were collected from 2 birds per pen, for determination of caecal cellulase and xylanase activity, microbiota composition and short chain fatty acid (SCFA) concentration, and ileal XOS concentration. Supplementation with 2,000 mg/kg XOS caused increased BWG at d 0 to 35 (P = 0.007) and enhanced caecal propionic, valeric and succinic acid concentration (P < 0.05). Wheat bran increased FI (P = 0.018) and BWG (P = 0.016), as well as caecal Bifidobacteria concentration (P < 0.001). Ileal XOS concentration was greatest when feeding combined wheat bran, 2,000 mg/kg XOS, and xylanase, resulting in increased caecal total SCFA, acetic acid and butyric acid concentration, and xylanase and cellulase activity (P < 0.05). Results from this study present that feed efficiency in birds fed sorghum-based diets is improved as a consequence of supplementing with fermentable fibre, xylanase and XOS.

Publication Type: Journal Article
Source of Publication: Animal Nutrition, v.10, p. 198-206
Publisher: Zhongguo Xumu Shouyi Xuehui,Chinese Association of Animal Science and Veterinary Medicine
Place of Publication: China
ISSN: 2405-6383
2405-6545
Fields of Research (FoR) 2020: 3003 Animal production
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science
School of Science and Technology

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