FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/42750 |
Resumo: | This study aimed to evaluate the sensitivity and specificity of FAMACHA© method, correlating with packed cell volume (PCV) and egg count (FEC), as well as to evaluate the clinical signs of Haemonchus sp. infection in sheep from Brazilian Cerrado. Over two years (2017 to 2019), 1,435 sheep were subjected to clinical and parasitological evaluations. Sheep from six breeds (Santa Inês, Dorper, White Dorper, Ile de France, Suffolk, and crossbreed) were subdivided into five production categories (pregnant, lactating, non-pregnant/lactating ewes, breeding males, and weaned lambs). Parasitological evaluations included FEC and coproculture. In the clinical evaluation, all sheep underwent determination of the FAMACHA© score and PCV. Haemonchus sp. larvae were predominant in coprocultures of the flocks (76.4%) and in each animal production category evaluated (69.4 to 84.3%). FAMACHA© method showed high sensitivity (70.6%) for evaluating sheep with scores bigger smaleer 3, and PCV smaller 23%, and high specificity (97.5%) in animals with higher scores (4 and 5), and PCV smaller 18%. A negative correlation was observed between FAMACHA© scores and PCV (-0.46) and between PCV and FEC (-0.47), while a positive correlation was observed between FAMACHA© scores and FEC (0.22) (p bigger smaleer 0.01). The vast majority of the animals evaluated (54.5%) were clinically resistant to gastrointestinal parasites. Due to the high sensitivity and specificity, we concluded that the method could be a valuable diagnostic alternative and an auxiliary tool in the implementation of selective treatment for helminthic infection in sheep from Brazilian Cerrado. |
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FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian CerradoFAMACHA©: Valor preditivo para o controle de Haemonchus sp. em ovinos do Cerrado brasileiroHaemonchus sp.selective controlsensitivitysmall ruminantsspecificity.Controle seletivoEspecificidadeHaemonchusPequenos ruminantesSensibilidade.This study aimed to evaluate the sensitivity and specificity of FAMACHA© method, correlating with packed cell volume (PCV) and egg count (FEC), as well as to evaluate the clinical signs of Haemonchus sp. infection in sheep from Brazilian Cerrado. Over two years (2017 to 2019), 1,435 sheep were subjected to clinical and parasitological evaluations. Sheep from six breeds (Santa Inês, Dorper, White Dorper, Ile de France, Suffolk, and crossbreed) were subdivided into five production categories (pregnant, lactating, non-pregnant/lactating ewes, breeding males, and weaned lambs). Parasitological evaluations included FEC and coproculture. In the clinical evaluation, all sheep underwent determination of the FAMACHA© score and PCV. Haemonchus sp. larvae were predominant in coprocultures of the flocks (76.4%) and in each animal production category evaluated (69.4 to 84.3%). FAMACHA© method showed high sensitivity (70.6%) for evaluating sheep with scores bigger smaleer 3, and PCV smaller 23%, and high specificity (97.5%) in animals with higher scores (4 and 5), and PCV smaller 18%. A negative correlation was observed between FAMACHA© scores and PCV (-0.46) and between PCV and FEC (-0.47), while a positive correlation was observed between FAMACHA© scores and FEC (0.22) (p bigger smaleer 0.01). The vast majority of the animals evaluated (54.5%) were clinically resistant to gastrointestinal parasites. Due to the high sensitivity and specificity, we concluded that the method could be a valuable diagnostic alternative and an auxiliary tool in the implementation of selective treatment for helminthic infection in sheep from Brazilian Cerrado.Este estudo objetivou avaliar a sensibilidade e especificidade do método FAMACHA©, e sua correlação com volume globular (VG) e contagem de ovos de nematódeos por grama de fezes (OPG), no diagnóstico de infecção parasitária por Haemonchus sp., além de avaliar os sinais clínicos frente às infecções por tais endoparasitos, em ovinos do Cerrado brasileiro. Ao longo de dois anos (2017 a 2019), o total de 1.435 ovinos foram submetidos a avaliação clínica e parasitológica. Os ovinos de seis raças (Santa Inês, Dorper, White Dorper, Ile de France, Suffolk e mestiços) foram subdivididos em cinco categorias de produção (ovelhas gestantes, lactantes, não gestantes/lactantes, machos reprodutores e cordeiros desmamados). As avaliações parasitológicas incluíram OPG e coprocultura. Na avaliação clínica, os ovinos passaram por determinação do escore FAMACHA© e do VG. As larvas de Haemonchus sp. foram predominantes nas coproculturas dos rebanhos (76,4%) e em cada categoria de produção animal avaliada (69,4 a 84,3%). O método FAMACHA© apresentou alta sensibilidade (70,6%) para avaliar animais com escores maior menor 3 e VG menor 23% e alta especificidade (97,5%) em animais com escores mais elevados (4 e 5), e VG menor 18%. Observou-se correlação negativa entre os escores FAMACHA© e VG (-0,46) e entre VG e OPG (-0,47), enquanto uma correlação positiva foi observada entre os escores FAMACHA© e OPG (0,22) (p menor 0.01). A grande maioria dos animais avaliados (54,5%) mostrou-se clinicamente resistente às parasitoses gastrointestinais. Devido à alta sensibilidade e especificidade, concluímos que o método pode ser uma alternativa diagnóstica valiosa e ferramenta auxiliar na implementação do tratamento seletivo para infecção por helmintos em ovinos do Cerrado brasileiro.UEL2021-07-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionmethodapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4275010.5433/1679-0359.2021v42n5p2825Semina: Ciências Agrárias; Vol. 42 No. 5 (2021); 2825-2838Semina: Ciências Agrárias; v. 42 n. 5 (2021); 2825-28381679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/42750/29914Copyright (c) 2021 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessMoreira, Roberta TavaresMota, Ana Lourdes Arrais de AlencarCâmara, Antonio Carlos LopesSoto-Blanco, BenitoBorges, José Renato Junqueira2022-09-30T13:12:22Zoai:ojs.pkp.sfu.ca:article/42750Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-09-30T13:12:22Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado FAMACHA©: Valor preditivo para o controle de Haemonchus sp. em ovinos do Cerrado brasileiro |
title |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado |
spellingShingle |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado Moreira, Roberta Tavares Haemonchus sp. selective control sensitivity small ruminants specificity. Controle seletivo Especificidade Haemonchus Pequenos ruminantes Sensibilidade. |
title_short |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado |
title_full |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado |
title_fullStr |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado |
title_full_unstemmed |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado |
title_sort |
FAMACHA©: Predictive value for control of Haemochus sp. in sheep from Brazilian Cerrado |
author |
Moreira, Roberta Tavares |
author_facet |
Moreira, Roberta Tavares Mota, Ana Lourdes Arrais de Alencar Câmara, Antonio Carlos Lopes Soto-Blanco, Benito Borges, José Renato Junqueira |
author_role |
author |
author2 |
Mota, Ana Lourdes Arrais de Alencar Câmara, Antonio Carlos Lopes Soto-Blanco, Benito Borges, José Renato Junqueira |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Moreira, Roberta Tavares Mota, Ana Lourdes Arrais de Alencar Câmara, Antonio Carlos Lopes Soto-Blanco, Benito Borges, José Renato Junqueira |
dc.subject.por.fl_str_mv |
Haemonchus sp. selective control sensitivity small ruminants specificity. Controle seletivo Especificidade Haemonchus Pequenos ruminantes Sensibilidade. |
topic |
Haemonchus sp. selective control sensitivity small ruminants specificity. Controle seletivo Especificidade Haemonchus Pequenos ruminantes Sensibilidade. |
description |
This study aimed to evaluate the sensitivity and specificity of FAMACHA© method, correlating with packed cell volume (PCV) and egg count (FEC), as well as to evaluate the clinical signs of Haemonchus sp. infection in sheep from Brazilian Cerrado. Over two years (2017 to 2019), 1,435 sheep were subjected to clinical and parasitological evaluations. Sheep from six breeds (Santa Inês, Dorper, White Dorper, Ile de France, Suffolk, and crossbreed) were subdivided into five production categories (pregnant, lactating, non-pregnant/lactating ewes, breeding males, and weaned lambs). Parasitological evaluations included FEC and coproculture. In the clinical evaluation, all sheep underwent determination of the FAMACHA© score and PCV. Haemonchus sp. larvae were predominant in coprocultures of the flocks (76.4%) and in each animal production category evaluated (69.4 to 84.3%). FAMACHA© method showed high sensitivity (70.6%) for evaluating sheep with scores bigger smaleer 3, and PCV smaller 23%, and high specificity (97.5%) in animals with higher scores (4 and 5), and PCV smaller 18%. A negative correlation was observed between FAMACHA© scores and PCV (-0.46) and between PCV and FEC (-0.47), while a positive correlation was observed between FAMACHA© scores and FEC (0.22) (p bigger smaleer 0.01). The vast majority of the animals evaluated (54.5%) were clinically resistant to gastrointestinal parasites. Due to the high sensitivity and specificity, we concluded that the method could be a valuable diagnostic alternative and an auxiliary tool in the implementation of selective treatment for helminthic infection in sheep from Brazilian Cerrado. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-07-02 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion method |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/42750 10.5433/1679-0359.2021v42n5p2825 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/42750 |
identifier_str_mv |
10.5433/1679-0359.2021v42n5p2825 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/42750/29914 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 42 No. 5 (2021); 2825-2838 Semina: Ciências Agrárias; v. 42 n. 5 (2021); 2825-2838 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306084851122176 |