Show simple item record

dc.contributor.authorTorres-Pitarch, Alberto
dc.contributor.authorManzanilla, Edgar G
dc.contributor.authorGardiner, Gillian E.
dc.contributor.authorO'Doherty, John V.
dc.contributor.authorLawlor, Peadar G
dc.date.accessioned2020-05-26T14:14:33Z
dc.date.available2020-05-26T14:14:33Z
dc.date.issued2019-12-28
dc.identifier.citationTorres-Pitarch, A., Manzanilla, E., Gardiner, G., O’Doherty, J. and Lawlor, P. Systematic review and meta-analysis of the effect of feed enzymes on growth and nutrient digestibility in grow-finisher pigs: Effect of enzyme type and cereal source. Animal Feed Science and Technology, 2019, 251, 153-165. doi: https://doi.org/10.1016/j.anifeedsci.2018.12.007en_US
dc.identifier.urihttp://hdl.handle.net/11019/1902
dc.descriptionpeer-revieweden_US
dc.description.abstractDietary supplementation of pig diets with exogenous enzymes has been suggested as a strategy to increase nutrient digestibility and improve feed efficiency in grow-finisher pigs. However, inconsistent results are found in the literature. Ingredient composition of the diets is one of the most important sources of variation that may affect enzyme efficacy and consistency of results. A systematic review and a meta-analysis was therefore conducted to determine which exogenous enzymes with which diet type most consistently improve pig growth, nutrient digestibility and feed efficiency. Enzyme type and dietary cereal source were the main explanatory variables included in the models. The mean difference effects of enzyme supplementation on average daily gain (ADG), average daily feed intake (ADFI), gain to feed (G:F), apparent ileal digestibility (AiD) and apparent total tract digestibility (ATTD) of dry matter (DM), crude protein (CP), and gross energy (GE) were calculated for each study and these were used as the effect size estimates in the meta-analysis. A dataset with 139 comparisons from 67 peer-reviewed publications was used in the meta-analysis. In response to enzyme supplementation, G:F was improved in 38 of the 120 comparisons reporting pig growth data, remained un-changed in 78 and deteriorated in 4. Overall, DM and GE AiD, and ATTD were improved by xylanase, xylanase + β-glucanase, mannanase and protease dietary supplementation (P < 0.05). Crude protein AiD was only improved by protease dietary supplementation (P < 0.001). Dietary supplementation with xylanase alone improved ADG of maize- (P < 0.05) and co-product- (P < 0.05) based diets but had no effect on the G:F of grow-finisher pigs. Dietary supplementation with xylanase + β-glucanase had no effect on ADG, ADFI and G:F. Protease supplementation tended to improve the ADG of grow-finisher pigs fed co-product-based diets (P = 0.08) but had no effect on G:F. Dietary supplementation with multi-enzyme complexes improved the ADG (P < 0.05) and G:F (P < 0.01) of maize-, wheat-, barley- and co-product-based diets. In conclusion, dietary supplementation with all enzyme types improved nutrient digestibility depending on ingredient content, while mannanase and multi-enzyme complex supplementation most consistently improved growth and feed efficiency.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofseriesAnimal Feed Science and Technology;Vol. 251
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectCarbohydrasesen_US
dc.subjectMannanaseen_US
dc.subjectProteaseen_US
dc.subjectSwineen_US
dc.subjectXylanaseen_US
dc.subjectβ-glucanaseen_US
dc.titleSystematic review and meta-analysis of the effect of feed enzymes on growth and nutrient digestibility in grow-finisher pigs: Effect of enzyme type and cereal sourceen_US
dc.typeArticleen_US
dc.embargo.terms2019-12-28en_US
dc.identifier.doihttps://doi.org/10.1016/j.anifeedsci.2018.12.007
dc.contributor.sponsorTeagascen_US
dc.contributor.sponsorEuropean Union’s Seventh Framework Programmeen_US
dc.contributor.sponsorTeagasc Walsh Fellowship Programmeen_US
dc.contributor.sponsorGrantNumberPDPG6671en_US
dc.contributor.sponsorGrantNumber311794en_US
refterms.dateFOA2019-12-28T00:00:00Z


Files in this item

Thumbnail
Name:
1-s2.0-S0377840118306588-main.pdf
Size:
917.8Kb
Format:
PDF
Description:
main article

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-ShareAlike 3.0 United States
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States