Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/24519 |
Resumo: | In 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. |
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Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farmFree-range broilersGastrointestinal parasitismEimeria spp.PortugalIn 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.Associação Portuguesa de Engenharia ZootécnicaRepositório da Universidade de LisboaLozano, JoãoPalomero Salinero, AntonioAnaya, AdrianaLux Hoppe, Estevam G.Gomes, LídiaOliveira, ManuelaPaz-Silva, AdolfoRebelo, Maria TeresaMadeira de Carvalho, Luís2022-06-14T11:26:48Z2021-022021-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/24519engLozano 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):13-232182-4975info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:54:09Zoai:www.repository.utl.pt:10400.5/24519Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:08:32.404416Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
title |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
spellingShingle |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm Lozano, João Free-range broilers Gastrointestinal parasitism Eimeria spp. Portugal |
title_short |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
title_full |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
title_fullStr |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
title_full_unstemmed |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
title_sort |
Long-term survey of Eimeria spp. prevalence and faecal shedding in a traditional Portuguese free-range broiler farm |
author |
Lozano, João |
author_facet |
Lozano, João Palomero Salinero, Antonio Anaya, Adriana Lux Hoppe, Estevam G. Gomes, Lídia Oliveira, Manuela Paz-Silva, Adolfo Rebelo, Maria Teresa Madeira de Carvalho, Luís |
author_role |
author |
author2 |
Palomero Salinero, Antonio Anaya, Adriana Lux Hoppe, Estevam G. Gomes, Lídia Oliveira, Manuela Paz-Silva, Adolfo Rebelo, Maria Teresa Madeira de Carvalho, Luís |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Lozano, João Palomero Salinero, Antonio Anaya, Adriana Lux Hoppe, Estevam G. Gomes, Lídia Oliveira, Manuela Paz-Silva, Adolfo Rebelo, Maria Teresa Madeira de Carvalho, Luís |
dc.subject.por.fl_str_mv |
Free-range broilers Gastrointestinal parasitism Eimeria spp. Portugal |
topic |
Free-range broilers Gastrointestinal parasitism Eimeria spp. Portugal |
description |
In 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. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-02 2021-02-01T00:00:00Z 2022-06-14T11:26:48Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/24519 |
url |
http://hdl.handle.net/10400.5/24519 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Lozano 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):13-23 2182-4975 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Associação Portuguesa de Engenharia Zootécnica |
publisher.none.fl_str_mv |
Associação Portuguesa de Engenharia Zootécnica |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799131179515904000 |