Abstract
Xylanase and xylo-oligosaccharide have a positive effect on body weight and indicators of immune function in broilers at 28 days of age.
Allison Craig1,3, Farina Khattak1, Peter Hastie3, Mike Bedford2 and Oluyinka Olukosi1.
1Monogastric Science Research Centre, SRUC, Edinburgh, EH9 3JG
²AB Vista, Marlborough Business Park, Marlborough, Wiltshire, SN8 4AN
3School of Veterinary Medicine , Glasgow University, Glasgow, G61 1QH, Scotland
Key words; broiler, xylanase, β-glucanase, prebiotic, XOS
The aim of this study was to investigate the effect of xylanase and xylo-oligosaccharides (XOS) on indicators of the gut immune response of broilers fed a nutritionally deficient diet and raised on new or mix of recycled and new (50/50) (dirty) litter. Six hundred and forty male Ross 308 broilers were used in this 28 day study. The treatments were arranged into a 2 × 4 factorial arrangement with 8 replicates per treatment. The factors were 2 litter types (dirty litter or clean litter) and 4 additives (control- without any additive, xylanase alone, xylanase + β- glucanase and 0.025% XOS). The energy and protein contents of the diets were reduced by 1MJ/kg and 30g/kg to 12.0 MJ/kg and 200 g/kg, respectively, and all diets contained 500FTU of phytase. On day 28, birds and feed were weighed and 2 birds per pen were randomly selected and euthanised. The spleen, bursa of fabricius and gizzard were removed and weighed. There was no significant effect of treatment on feed intake or FCR. Birds receiving diets containing xylanase + β- glucanase or XOS gained significantly (P < 0.05) less weight than those receiving control diets or diets containing xylanase alone. There was a significant (P < 0.05) litter type × additive type interaction for bursa of fabricius weight. Birds raised on dirty litter and receiving xylanase and β-glucanase had significantly lighter bursa than those raised on dirty litter and receiving XOS but there was no such effect for birds raised on clean litter. There was no significant effect of treatment on gizzard or spleen weight. In conclusion, litter type had no effect on growth performance however; the use of xylanase + β-glucanase decreased the weight of an organ associated with immune function compared to XOS. These observations indicate that carbohydrases supplementation possibly influences immune response in broilers, the effect of this on genes related to inflammatory and immune responses are being further investigated.
Allison Craig1,3, Farina Khattak1, Peter Hastie3, Mike Bedford2 and Oluyinka Olukosi1.
1Monogastric Science Research Centre, SRUC, Edinburgh, EH9 3JG
²AB Vista, Marlborough Business Park, Marlborough, Wiltshire, SN8 4AN
3School of Veterinary Medicine , Glasgow University, Glasgow, G61 1QH, Scotland
Key words; broiler, xylanase, β-glucanase, prebiotic, XOS
The aim of this study was to investigate the effect of xylanase and xylo-oligosaccharides (XOS) on indicators of the gut immune response of broilers fed a nutritionally deficient diet and raised on new or mix of recycled and new (50/50) (dirty) litter. Six hundred and forty male Ross 308 broilers were used in this 28 day study. The treatments were arranged into a 2 × 4 factorial arrangement with 8 replicates per treatment. The factors were 2 litter types (dirty litter or clean litter) and 4 additives (control- without any additive, xylanase alone, xylanase + β- glucanase and 0.025% XOS). The energy and protein contents of the diets were reduced by 1MJ/kg and 30g/kg to 12.0 MJ/kg and 200 g/kg, respectively, and all diets contained 500FTU of phytase. On day 28, birds and feed were weighed and 2 birds per pen were randomly selected and euthanised. The spleen, bursa of fabricius and gizzard were removed and weighed. There was no significant effect of treatment on feed intake or FCR. Birds receiving diets containing xylanase + β- glucanase or XOS gained significantly (P < 0.05) less weight than those receiving control diets or diets containing xylanase alone. There was a significant (P < 0.05) litter type × additive type interaction for bursa of fabricius weight. Birds raised on dirty litter and receiving xylanase and β-glucanase had significantly lighter bursa than those raised on dirty litter and receiving XOS but there was no such effect for birds raised on clean litter. There was no significant effect of treatment on gizzard or spleen weight. In conclusion, litter type had no effect on growth performance however; the use of xylanase + β-glucanase decreased the weight of an organ associated with immune function compared to XOS. These observations indicate that carbohydrases supplementation possibly influences immune response in broilers, the effect of this on genes related to inflammatory and immune responses are being further investigated.
| Original language | English |
|---|---|
| Publication status | Print publication - 17 Sept 2018 |
| Event | European Poultry Conference, - Valamar Lacroma Dubrovnik, Dubrovnik, Dubrovnik, Croatia Duration: 17 Sept 2018 → 21 Sept 2018 |
Conference
| Conference | European Poultry Conference, |
|---|---|
| Abbreviated title | EPC |
| Country/Territory | Croatia |
| City | Dubrovnik |
| Period | 17/09/18 → 21/09/18 |