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Anthelmintic efficacy in sheep and goats under different management and deworming systems in the region of Lisbon and Tagus Valley, Portugal

2022-12-01Journal article Open access
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dc.contributor.authorAntunes, Maria Inês
dc.contributor.authorLima, Miguel Saraiva
dc.contributor.authorStilwell, George
dc.contributor.authorRomeiras, Maria Inês
dc.contributor.authorFragoso, Luis
dc.contributor.authorMadeira de Carvalho, Luís
dc.date.accessioned2023-02-22T22:48:20Z
dc.date.available2023-02-22T22:48:20Z
dc.date.issued2022-12-01
dc.descriptionResearch Areas: Microbiologypt_PT
dc.description.abstractABSTRACT - Infections caused by gastrointestinal parasites have been described worldwide as one of the most important issues impacting small ruminant production. The systematic administration of anthelmintic (AH) drugs without following good practice principles has led to an increase in anthelmintic resistance (AR). There is scarce information regarding AH efficacy in small ruminants in Portugal. This study aimed to characterize by in vivo methods the presence and level of AR in four farms in the region of Lisbon and Tagus Valley. All four farms kept small herds in extensive management systems and used different deworming protocols. The active substances used were fenbendazole and a combination of mebendazole plus closantel in a dosage according to the manufacturers’ instructions. On day 0 (T0), fecal samples were collected from all study animals, and animals in the treatment group (n = 40) were dewormed with the AH previously chosen by the assistant veterinarian. Animals in the control group (n = 30) did not receive any AH drug. The fecal sample collection was repeated on day 15 (T15), and the control group was treated. Egg counts were performed using the McMaster method for the eggs per gram (EPG), and AR was evaluated by the fecal egg count reduction test (FECRT) with a 95% confidence level (CL). The results from this experiment indicated that the four farms presented AR with two farms to fenbendazole (FECRT of 48% and 85%) and two farms to mebendazole plus closantel (FECRT of 66% and 79%). These results indicate that the gastrointestinal parasites of the four studied Portuguese farms are resistant to benzimidazoles, which suggests an increase in AR regarding nematodes in small ruminant production systems in Portugalpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAntunes MI, Lima MS, Stilwell G, Romeiras MI, Fragoso L, Madeira de Carvalho LM. 2022. Anthelmintic efficacy in sheep and goats under different management and deworming systems in the region of Lisbon and Tagus Valley, Portugal. Pathogens, 11(12):1457. DOI: https://doi.org/10.3390/pathogens11121457pt_PT
dc.identifier.doi10.3390/pathogens11121457pt_PT
dc.identifier.eissn2076-0817
dc.identifier.urihttp://hdl.handle.net/10400.5/27338
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relation.publisherversionhttps://www.mdpi.com/2076-0817/11/12/1457pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectGastrointestinal parasitespt_PT
dc.subjectSmall ruminantspt_PT
dc.subjectAnthelmintic efficacypt_PT
dc.subjectFECRTpt_PT
dc.subjectLisbon and Tagus Valleypt_PT
dc.subjectPortugalpt_PT
dc.titleAnthelmintic efficacy in sheep and goats under different management and deworming systems in the region of Lisbon and Tagus Valley, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceBasel, Switzerlandpt_PT
oaire.citation.titlePathogenspt_PT
oaire.citation.volume11(12):1457pt_PT
person.familyNameStilwell
person.familyNameMadeira de Carvalho
person.givenNameGeorge
person.givenNameLuís Manuel
person.identifier.ciencia-id561D-7ACE-CFD9
person.identifier.ciencia-id9416-643A-4E0C
person.identifier.orcid0000-0003-3733-3223
person.identifier.orcid0000-0002-7548-667X
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf72d2435-426f-4433-b34c-2b574f35e02e
relation.isAuthorOfPublicationa90159ad-7f7b-4ffb-9c91-f7bb244ea467
relation.isAuthorOfPublication.latestForDiscoveryf72d2435-426f-4433-b34c-2b574f35e02e

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