Article (Scientific journals)
Effect of feed enzymes on digestibility and growth in weaned pigs: A systematic review and meta-analysis
Torres-Pitarch, Alberto; Hermans, David; Manzanilla, Edgar Garcia et al.
2017In Animal Feed Science and Technology, 233, p. 145-159
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Keywords :
weaning; piglet; phytase; protease; xylanase; mannanase
Abstract :
[en] Supplementation of post-weaning diets with exogenous enzymes has been suggested to control post-weaning syndrome, by compensating for the under-developed endogenous enzyme secretory capacity and increasing nutrient digestibility in newly weaned pigs. The effect of in-feed enzymes in improving gut maturation, growth and/or health in weaned piglets is not always consistent. A systematic review and a meta-analysis were therefore conducted to determine which exogenous enzymes are most consistent in improving piglet growth and digestibility when supplemented to post-weaning diets. The mean difference effect of enzyme supplementation on growth and digestibility of dry matter (DM), gross energy (GE), crude protein (CP), and P digestibility was calculated for each study and this was used as the effect size estimate in the meta-analysis. The impact of feed enzyme supplementation on intestinal health and bone mineralization was also discussed where information was available in the literature. From a total of 90 studies included in the metaanalysis, G:F was improved in 55, remained un-changed in 28 and deteriorated in 7, in response to enzyme supplementation. Average daily gain, average daily feed intake (ADFI) and G:F was improved when phytase was supplemented in the diet. Phosphorous digestibility was increased with phytase supplementation while GE digestibility was reduced. Dietary phytase supplementation increased bone mineralization in pigs fed diets with a reduced Pcontent. Supplementation with multi-enzyme complexes increased DM and CP digestibility. In conclusion, the most consistent improvement in piglet growth, P digestibility and bone mineralization were found due to exogenous phytase supplementation. Supplementation with xylanase alone or in combination with β-glucanase had inconsistent effects on piglet growth and nutrient digestibility. The most consistent improvements in growth and nutrient digestibility due to supplementation with multi-enzymes complexes were found when mannanase and/or protease were included in the complex.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Torres-Pitarch, Alberto
Hermans, David
Manzanilla, Edgar Garcia
Bindelle, Jérôme  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Everaert, Nadia ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Beckers, Yves  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Torrallardona, David
Bruggeman, Geert
Gardiner, Gillian E.
Lawlor, Peadar G.
Language :
English
Title :
Effect of feed enzymes on digestibility and growth in weaned pigs: A systematic review and meta-analysis
Publication date :
2017
Journal title :
Animal Feed Science and Technology
ISSN :
0377-8401
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
233
Pages :
145-159
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
COST Action FA1401 PiGutNet
Funders :
UE - Union Européenne [BE]
Available on ORBi :
since 08 June 2017

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