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Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm

2021-02Artigo científico Acesso aberto
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dc.contributor.authorLozano, João
dc.contributor.authorPalomero Salinero, Antonio
dc.contributor.authorAnaya, Adriana
dc.contributor.authorLux Hoppe, Estevam G.
dc.contributor.authorGomes, Lídia
dc.contributor.authorOliveira, Manuela
dc.contributor.authorPaz-Silva, Adolfo
dc.contributor.authorRebelo, Maria Teresa
dc.contributor.authorMadeira de Carvalho, Luís
dc.date.accessioned2022-06-14T11:26:48Z
dc.date.available2022-06-14T11:26:48Z
dc.date.issued2021-02
dc.description.abstractIn free-range broiler production, animals are highly exposed to gastrointestinal parasitism, namely by coccidia, due to their long contact with the outdoor environment. Also, the prevalence of gastrointestinal parasites in extensive poultry production, is frequently influenced by biotic and abiotic factors. The current national pioneer long-term survey aimed to assess the prevalence and faecal shedding of Eimeria spp. oocysts in a traditional Portuguese free-range broiler farm, on different production conditions. Between July 2018 and March 2019, a total of 350 faecal samples were collected from different groups of free-range broilers at the fattening phase, in a poultry farm located in North-western Lisbon district, Portugal. Quantitative and qualitative coprological techniques were performed, aiming to quantify the Eimeria spp. prevalence and faecal shedding level. Coccidia prevalence was higher in Summer and Autumn groups (72% and 80%, respectively), although faecal shedding levels were higher in the Autumn and Winter groups (1191 and 1562 Oocysts Per Gram, OPG). Animals showed clinical signs of coccidiosis during the survey, especially in Autumn’s 1st sampling, in which 42% of the faecal samples had blood. The lack of sanitary depopulations, length of the fattening phase (1 month), short pre-patent period of coccidia, exposure to different environmental conditions and irregular drug treatments with amprolium, were key factors responsible for the different parasitic scenarios observed during this survey.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLozano J, Palomero Salinero A, Anaya A, Lux-Hoppe E, Gomes L, Oliveira M, Paz-Silva A, Teresa Rebelo M, Madeira de Carvalho L. 2021. Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range chicken farm. Revista Portuguesa de Zootecnia. 6(1):13-23pt_PT
dc.identifier.issn2182-4975
dc.identifier.urihttp://hdl.handle.net/10400.5/24519
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAssociação Portuguesa de Engenharia Zootécnicapt_PT
dc.relationCentre for Interdisciplinary Research in Animal Health
dc.relationCentre for Environmental and Marine Studies
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectFree-range broilerspt_PT
dc.subjectGastrointestinal parasitismpt_PT
dc.subjectEimeria spp.pt_PT
dc.subjectPortugalpt_PT
dc.titleLong-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farmpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Interdisciplinary Research in Animal Health
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00276%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAMB%2F50017%2F2019/PT
oaire.citation.endPage23pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage13pt_PT
oaire.citation.titleRevista Portuguesa de Zootecniapt_PT
oaire.citation.volume1pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePestana Lozano
person.familyNamePalomero Salinero
person.familyNameDIAZ ANAYA
person.familyNameLux Hoppe
person.familyNameOliveira
person.familyNamePaz-Silva
person.familyNameFERREIRA RAMOS NABAIS DE OLIVEIRA REBELO
person.familyNameMadeira de Carvalho
person.givenNameJoão Miguel
person.givenNameAntonio Miguel
person.givenNameADRIANA MARIA
person.givenNameEstevam G.
person.givenNameManuela
person.givenNameAdolfo
person.givenNameMARIA TERESA
person.givenNameLuís Manuel
person.identifierA-3772-2013
person.identifier.ciencia-idA81D-BFE3-3D35
person.identifier.ciencia-idBE1E-2B3B-92D2
person.identifier.ciencia-id6D14-E73D-B333
person.identifier.ciencia-id9416-643A-4E0C
person.identifier.orcid0000-0001-5390-6998
person.identifier.orcid0000-0002-1693-3409
person.identifier.orcid0000-0002-8192-6379
person.identifier.orcid0000-0003-3958-7227
person.identifier.orcid0000-0002-3910-1525
person.identifier.orcid0000-0002-0208-3861
person.identifier.orcid0000-0002-2724-2195
person.identifier.orcid0000-0002-7548-667X
person.identifier.ridD-7560-2013
person.identifier.ridI-2788-2015
person.identifier.scopus-author-id57201665937
person.identifier.scopus-author-id55928513700
person.identifier.scopus-author-id16401732300
person.identifier.scopus-author-id8253074800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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