Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler
While arabinoxylans (AX), an important dietary fiber fraction of wheat-based broiler diets, are known for exerting antinutritional effects in the gastrointestinal (GI) tract of broilers, the prebiotic potential of arabinoxylan-oligosaccharides (AXOS) is also well-documented. However, inconsistent pe...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-05-01
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| Series: | Poultry Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S003257912030047X |
| _version_ | 1828878666914856960 |
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| author | A. Bautil J. Verspreet J. Buyse P. Goos M.R. Bedford C.M. Courtin |
| author_facet | A. Bautil J. Verspreet J. Buyse P. Goos M.R. Bedford C.M. Courtin |
| author_sort | A. Bautil |
| collection | DOAJ |
| description | While arabinoxylans (AX), an important dietary fiber fraction of wheat-based broiler diets, are known for exerting antinutritional effects in the gastrointestinal (GI) tract of broilers, the prebiotic potential of arabinoxylan-oligosaccharides (AXOS) is also well-documented. However, inconsistent performance responses as well as the effectiveness of low amounts of AXOS used in diets of previously conducted experiments put into question the classical prebiotic route being the sole mode of action of AXOS. The objective of this study was to investigate the effects of dietary AXOS addition on the rate of AX digestion in the gastrointestinal tract of broilers as a function of broiler age to gain more insight into the mode of action of these oligosaccharides. A feeding trial was performed on 480 one-day-old chicks (Ross 308) receiving a wheat-based diet supplemented with or without 0.50% AXOS, containing no endoxylanases. Digesta samples from ileum and caeca and fecal samples were analyzed for AX content, AX digestibility, intestinal viscosity, and microbial AX-degrading enzyme activities at 6 different ages (day 5, 10, 15, 21, 28, 35). Chicks fed from hatching with 0.50% AXOS demonstrated a higher ileal viscosity (P < 0.05). Also higher levels of AX solubilization and fermentation compared to control birds at 10 D were observed. This was noted by the higher total tract AX digestibility of water-extractable AX (WE-AX) and total AX (TOT-AX) at this age (P < 0.05). Although no significant difference in AX-degrading enzyme activities was observed among the dietary treatments, AXOS supplementation in young broilers was shown to stimulate or “kick-start” dietary AX digestion, thereby speeding up the development of a fiber-fermenting microbiome in the young broiler. This stimulation effect of AXOS could enable greater functional value to be extracted from dietary fiber in broiler feeds. |
| first_indexed | 2024-12-13T09:11:33Z |
| format | Article |
| id | doaj.art-5a6c722dede1461099f66214e4fc40e2 |
| institution | Directory Open Access Journal |
| issn | 0032-5791 |
| language | English |
| last_indexed | 2024-12-13T09:11:33Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Poultry Science |
| spelling | doaj.art-5a6c722dede1461099f66214e4fc40e22022-12-21T23:52:56ZengElsevierPoultry Science0032-57912020-05-0199525552565Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broilerA. Bautil0J. Verspreet1J. Buyse2P. Goos3M.R. Bedford4C.M. Courtin5Laboratory of Food Chemistry and Biochemistry, Department of Microbial and Molecular Systems (M2S), KU Leuven, 3001 Leuven, BelgiumLaboratory of Food Chemistry and Biochemistry, Department of Microbial and Molecular Systems (M2S), KU Leuven, 3001 Leuven, BelgiumLaboratory of Livestock Physiology, Department of Biosystems, KU Leuven, 3001 Leuven, BelgiumMeBioS Division, Department of Biosystems, KU Leuven, 3001 Leuven, BelgiumAB Vista, Marlborough, Wiltshire SN8 4AN, United KingdomLaboratory of Food Chemistry and Biochemistry, Department of Microbial and Molecular Systems (M2S), KU Leuven, 3001 Leuven, Belgium; Corresponding author:While arabinoxylans (AX), an important dietary fiber fraction of wheat-based broiler diets, are known for exerting antinutritional effects in the gastrointestinal (GI) tract of broilers, the prebiotic potential of arabinoxylan-oligosaccharides (AXOS) is also well-documented. However, inconsistent performance responses as well as the effectiveness of low amounts of AXOS used in diets of previously conducted experiments put into question the classical prebiotic route being the sole mode of action of AXOS. The objective of this study was to investigate the effects of dietary AXOS addition on the rate of AX digestion in the gastrointestinal tract of broilers as a function of broiler age to gain more insight into the mode of action of these oligosaccharides. A feeding trial was performed on 480 one-day-old chicks (Ross 308) receiving a wheat-based diet supplemented with or without 0.50% AXOS, containing no endoxylanases. Digesta samples from ileum and caeca and fecal samples were analyzed for AX content, AX digestibility, intestinal viscosity, and microbial AX-degrading enzyme activities at 6 different ages (day 5, 10, 15, 21, 28, 35). Chicks fed from hatching with 0.50% AXOS demonstrated a higher ileal viscosity (P < 0.05). Also higher levels of AX solubilization and fermentation compared to control birds at 10 D were observed. This was noted by the higher total tract AX digestibility of water-extractable AX (WE-AX) and total AX (TOT-AX) at this age (P < 0.05). Although no significant difference in AX-degrading enzyme activities was observed among the dietary treatments, AXOS supplementation in young broilers was shown to stimulate or “kick-start” dietary AX digestion, thereby speeding up the development of a fiber-fermenting microbiome in the young broiler. This stimulation effect of AXOS could enable greater functional value to be extracted from dietary fiber in broiler feeds.http://www.sciencedirect.com/science/article/pii/S003257912030047Xarabinoxylan-oligosaccharidesarabinoxylan degradationbroiler agedietary fiber |
| spellingShingle | A. Bautil J. Verspreet J. Buyse P. Goos M.R. Bedford C.M. Courtin Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler Poultry Science arabinoxylan-oligosaccharides arabinoxylan degradation broiler age dietary fiber |
| title | Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler |
| title_full | Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler |
| title_fullStr | Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler |
| title_full_unstemmed | Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler |
| title_short | Arabinoxylan-oligosaccharides kick-start arabinoxylan digestion in the aging broiler |
| title_sort | arabinoxylan oligosaccharides kick start arabinoxylan digestion in the aging broiler |
| topic | arabinoxylan-oligosaccharides arabinoxylan degradation broiler age dietary fiber |
| url | http://www.sciencedirect.com/science/article/pii/S003257912030047X |
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