Exogenous xylanase improves broiler production efficiency by increasing proximal small intestine digestion of crude protein and starch in wheat-based diets of various viscosities

Matthiesen, Connie Frank; Pettersson, Dan; Smith, A.G.; Pedersen, Ninfa Rangel; Storm, A. C.

doi:10.1016/j.anifeedsci.2020.114739

Cited by 13 publications

(11 citation statements)

References 32 publications

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“…Conflicting to the previously described results, the combination of MBM∗wheat bran (diet Z) proved to influence N disappearance rate positively by as much as 9% compared with diets based on single ingredients. The effect of the different feed ingredients in the present study supports that that digesta viscosity is an important parameter, when it comes to digestion kinetics ( Choct et al., 1996 ; Matthiesen et al., in press ).…”

Section: Discussionsupporting

confidence: 85%

“…Higher viscosity in digesta reduces the mixing of feed with endogenous enzymes, which decrease nutrient digestibility ( Choct et al., 1996 ). Matthiesen et al. (in press) showed that supplementation of a xylanase to normal and high viscous wheat-based diets for broilers increased the nutrient disappearance rate of N and starch.…”

Section: Discussionmentioning

confidence: 99%

“…Difference in the starch digestion can be ascribed to starch granular structure, antinutritional factors, and coarse particles ( Carré, 2004 ). Disappearance rates of both N and starch have been shown to be affected by viscosity of diets, indicating that ingredients can interact in complex diets in a nonadditive way ( Matthiesen et al., In Press ). However, how feed ingredients interact in complex diets and how this affects the digestion rate of starch and protein is not clear.…”

Section: Introductionmentioning

confidence: 99%

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The influence of feed ingredients on CP and starch disappearance rate in complex diets for broiler chickens

et al. 2021

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The influence of feed ingredients on digestion kinetics of N and starch in complex diets was investigated in the current experiment. A total of 34 diets with different inclusion levels of 10 commonly used feed ingredients (corn, wheat, sorghum, soybean meal, canola meal, full-fat soybean meal [ FFSB ], palm kernel meal, meat and bone meal, wheat distillers grain with solubles and wheat bran) were randomly allocated to 170 cages with 8 birds in each. Apparent jejunal and ileal digestibility of N and starch was determined on a cage level in broilers feed the experimental diets ad libitum from 21 to 24 d after hatch. Disappearance rate of N and starch from the intestine was estimated through a first-order decay function fitted to the digesta data from the jejunum and ileum. The fit of the decay functions was evaluated with root mean squared error as percentage of the observed mean. The influence of the feed ingredients on the disappearance rates were found through a linear regression model, including the effect of the single ingredients, 2-way and 3-way interactions and evaluated with a Student t test test. Starch digestion kinetics were in general faster than N digestion kinetics. The N disappearance rate was both influenced by single ingredients and interaction amongst ingredients, whereas starch disappearance rate mainly was influenced by single ingredients. A combination of FFSB and soybean meal decreased the N digestion rate by 22 to 25% compared with diets with only soybean meal or FFSB, respectively. These results indicate that nutrients from 1 feed ingredient can influence the rate of disappearance of nutrients from other feed ingredients in a complex diet. This highlights the importance of understanding nutrient digestion kinetics and how these are influenced both additively and nonadditively by different feed ingredients in complex diets.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of feed ingredients on CP and starch disappearance rate in complex diets for broiler chickens

et al. 2021

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“…The activity of dietary NSPases in the gizzard has been reported to be limited, mainly due to the acidic environment [ 42 ]. Nevertheless, cell wall degradation during the early stages of digestion [ 43 ] could set the scene for improved feed assimilation in the small intestine and the hindgut. Hence, the potential influence of dietary NSPases on carbohydrate content in the gizzard was investigated.…”

Section: Discussionmentioning

confidence: 99%

Impact of Xylanase and Glucanase on Oligosaccharide Formation, Carbohydrate Fermentation Patterns, and Nutrient Utilization in the Gastrointestinal Tract of Broilers

Kouzounis

Hageman

Soares³

et al. 2021

Animals

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This study aimed at determining how the degradation of cereal non-starch polysaccharides (NSP) by dietary enzymes during feed digestion can influence nutrient digestibility and NSP fermentability in broilers. Ninety-six one-day-old male broilers were assigned to 4 different treatments: control and enzyme-supplemented wheat-based (WC, WE) or maize-based (MC, ME) treatments. Enzyme supplementation with endo-xylanase and endo-glucanase occurred from day 20 onwards. On day 28, digesta samples were collected. Nutrient digestibility, NSP recovery, oligosaccharide profile, and short-chain fatty acids (SCFA) content were determined. Enzyme supplementation in WE resulted in a higher starch (3%; p = 0.004) and protein (5%; p = 0.002) digestion in the ileum compared to WC. Xylanase activity in WE led to in situ formations of arabinoxylan-oligosaccharides consisting of 5 to 26 pentose units in the ileum. This coincided with decreased arabinose (p = 0.059) and xylose (p = 0.036) amounts in the ceca and higher acetate (p = 0.014) and butyrate (p = 0.044) formation in WE compared to WC. Conversely, complete total tract recovery of arabinoxylan in MC and ME suggested poor maize NSP fermentability. Overall, enzyme action improved nutrient digestibility and arabinoxylan fermentability in the wheat-based diet. The lower response of the maize-based diet to enzyme treatment may be related to the recalcitrance of maize arabinoxylan as well as to the high nutritive value of maize.

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“…Lazaro [28] reported a similar trend in the decreased viscosity through exogenous supplementation of a carbohydrase blend in the diet. Exogenous xylanase supplementation was also shown to significantly reduce jejunal and ileal digesta viscosity in broilers fed wheat-based diets [29,30].…”

Section: Discussionmentioning

confidence: 95%

Coccidia Vaccine Challenge and Exogenous Enzyme Supplementation in Broiler Chicken 1. Effect on Digesta Viscosity, Diet Energy Utilization, and Apparent Metabolizable Energy Value of Wheat

Dunaway

Adedokun

2021

Animals

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This study examined the effect of exogenous mixed-enzyme supplementation (xylanase, β-glucanase, and pectinase) to a corn-SBM (CS) and a wheat-CS-based (WCS) diet in birds challenged with coccidia vaccine (Coccivac B-52™). The WCS-based diet was produced by replacing 30% of the energy-yielding portions of the CS-based diet with wheat. On day 14, 448 (n = 7) Cobb by-product breeder male broilers were assigned to a 2 (diet types) × 2 (with or without enzyme supplementation) × 2 (0 or 20 × coccidia vaccine challenge; CVC) factorial arrangement of treatments in a completely randomized design for the determination of the apparent metabolizable energy (AME) value of wheat. Treatment effects on jejunum digesta viscosity and AME corrected for nitrogen (AMEn) of the diets were evaluated within each diet type as a 2 × 2 factorial arrangement of treatments, 7- and 14-day post-challenge. Seven-day post-challenge (day 21), dry matter (DM) and energy utilization, AME, and AMEn of the CS- and WCS-based diets decreased (p < 0.05) with CVC. Both AME and AMEn of wheat decreased (p < 0.05) by about a 20% in CVC-birds 7-day post-challenge. Enzyme and CVC resulted in a decrease (p < 0.05) in jejunal digesta viscosity in birds fed the CS-based diets, while there was an interaction (p < 0.05) between CVC and enzyme, with enzyme lowering (p < 0.05) the viscosity of digesta 7-day post-challenge. Results from this study showed that CVC resulted in a 20% decrease in AMEn 7-day post-challenge, while the interaction between exogenous enzyme supplementation and CVC resulted in an improvement in nitrogen utilization (~6%) in CVC birds fed the corn-SBM-based diet 7-days post challenge.

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Exogenous xylanase improves broiler production efficiency by increasing proximal small intestine digestion of crude protein and starch in wheat-based diets of various viscosities

Cited by 13 publications

References 32 publications

The influence of feed ingredients on CP and starch disappearance rate in complex diets for broiler chickens

The influence of feed ingredients on CP and starch disappearance rate in complex diets for broiler chickens

Impact of Xylanase and Glucanase on Oligosaccharide Formation, Carbohydrate Fermentation Patterns, and Nutrient Utilization in the Gastrointestinal Tract of Broilers

Coccidia Vaccine Challenge and Exogenous Enzyme Supplementation in Broiler Chicken 1. Effect on Digesta Viscosity, Diet Energy Utilization, and Apparent Metabolizable Energy Value of Wheat

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