1. Repositório Institucional da UFMG
  2. Publicações Científicas e Culturais
  3. Artigo de Periódico
Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/49334
Full metadata record
DC FieldValueLanguage
dc.creatorBruno Serpa Vieirapt_BR
dc.creatorFelipe Gomes da Silvapt_BR
dc.creatorCléber Franklin Santos de Oliveirapt_BR
dc.creatorAndré Brito Corrêapt_BR
dc.creatorJoão Garcia Caramori Júniorpt_BR
dc.creatorGerusa Da Silva Salles Corrêapt_BR
dc.date.accessioned2023-02-01T12:02:12Z-
dc.date.available2023-02-01T12:02:12Z-
dc.date.issued2017-10-
dc.citation.volume232pt_BR
dc.citation.spage21pt_BR
dc.citation.epage30pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.anifeedsci.2017.07.016pt_BR
dc.identifier.issn1873-2216pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/49334-
dc.description.resumoThe aim of this meta-analysis was to critically determine whether citric acid (CA) improves performance and bone mineralization of broilers when used in combination with phytase (PHY) in low-phosphorus diets. A systematic review of the literature was performed electronically on PubMed, Scielo, Science Direct, Scopus, and Web of Science databases; from the total of 574 identified studies, only seven met all the inclusion criteria (3862 broilers). Dietary PHY ranged from 300 to 4000 FTU/kg; CA from 20 to 50 g/kg. Mean differences between PHY+CA and PHY treatments on daily weight gain (DWG), daily feed intake (DFI), feed conversion ratio (FCR), and tibia ash content (TAC) were compared using a random-effects model. Also, subgroup analyses were performed to assess the potential interference of feed and non-feed related characteristics on the overall effect estimates. Chickens fed PHY+CA gained, on average, 2.46 g/day more (P = 0.005) than those fed exclusively with PHY. While no differences on DFI and FCR were detected between treatments, broilers supplemented with PHY+CA increased (P = 0.002) TAC in 3.27%. In general, better performance results for PHY+CA were found on males and broilers receiving PHY up to 500 FTU/kg or CA higher than 20 g/kg. Higher concentrations of phytate phosphorus and calcium also favored the detection of positive effect of PHY+CA on DWG and TAC. Improvement on DWG by PHY+CA was more pronounced in the finishing phase, but TAC responded better to PHY+CA during the starter period. Moreover, treatment period required to detect significant differences between PHY and PHY+CA was larger for DWG than for TAC. No outliers were observed and sensitivity analysis did not modify the overall effect estimates and its associated P value. However, the small number of studies and a possible publication bias in favor of studies with positive effects on FCR might have affected the strength of meta-analysis results. In conclusion, there is evidence that CA improves performance and bone mineralization of broilers when used in combination with PHY, which in individual studies was inconclusive. Moreover, feed and non-feed related characteristics could affect how DWG and TAC respond to PHY and CA.pt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIASpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofAnimal Feed Science and Technologypt_BR
dc.rightsAcesso Restritopt_BR
dc.subject.otherAves domésticas - Criaçãopt_BR
dc.subject.otherFrango de cortept_BR
dc.subject.otherÁcido cítricopt_BR
dc.subject.otherÁcidos orgânicospt_BR
dc.subject.otherCitratospt_BR
dc.titleDoes citric acid improve performance and bone mineralization of broilers when combined with phytase? A systematic review and meta-analysispt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0377840117304972pt_BR
Appears in Collections:Artigo de Periódico

Files in This Item:
There are no files associated with this item.
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.