Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil

Detalhes bibliográficos
Autor(a) principal: Andreotti, Renato
Data de Publicação: 2018
Outros Autores: Barros, Jacqueline Cavalcante, Garcia, Marcos Valerio, Rodrigues, Vinicius da Silva, Higa, Leandro de Oliveira Souza, Duarte, Pamella Oliveira, Blecha, Isabella Mauimi Zaidan, Bonatte-Junior, Paulino
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/30188
Resumo: The present study evaluated the behavior of Rhipicephalus microplus naturally infesting Brangus cattle raised with Nellore animals in the municipality of Água Clara, state of Mato Grosso do Sul, Central Brazil. For the field experiment composed of a group with 15 Brangus animals and 15 Nellore animals and a control group with 30 Brangus cattle, all at the post-weaning stage. The 2 groups were kept for 6 months in 2 adjacent paddocks, naturally infested with ticks, at a stocking rate of approximately 0.6 of an animal unit per hectare (AU/ha). Every 18 days, the animals were weighed, and ticks on both sides of each bovine were counted. Every 36 days, blood was collected for hematocrit measurement and molecular diagnosis of the 3 pathogens that cause tick fever. The Brangus animals had 6.8 times more ticks than the Nellore cattle. No significant difference was observed in the weight gain of the Brangus and Nellore animals, and no correlation between the number of ticks and weight was observed in either group. During the 6 months of the study, all animals presented normal hematocrit, were positive for Babesia bigemina and Anaplasma marginale, and were negative for Babesia bovis. Animals in Group 1 produced 27% fewer ticks than the animals in Group 2. The production rate of engorged female ticks in Nellore and Brangus cattle was 0.83% and 2.01%, respectively. Considering the infestation pattern required to produce 10 engorged females/day/animal, the Nellore and Brangus animals required 1,204 and 497 larvae/day, respectively. Our estimates showed that Brangus cattle need only 11.3% of the larvae in the pastures with Nellore cattle to maintain the infestation level observed in the present study. Brangus animals raised with Nellore cattle do not have a lower parasitic load and continue to suffer from tick infestation. Finally, Nellore cattle raised with Brangus cattle do not act as a cleaner because this grouping does not contribute to a reduced infestation in the Brangus animals.
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spelling Cattle tick infestation in Brangus cattle raised with Nellore in central BrazilInfestação de carrapatos em bovinos Brangus criados com Nelore no Brasil centralBovineCattle tickControlInfestation.BovinosCarrapato-do-boiControleInfestação.The present study evaluated the behavior of Rhipicephalus microplus naturally infesting Brangus cattle raised with Nellore animals in the municipality of Água Clara, state of Mato Grosso do Sul, Central Brazil. For the field experiment composed of a group with 15 Brangus animals and 15 Nellore animals and a control group with 30 Brangus cattle, all at the post-weaning stage. The 2 groups were kept for 6 months in 2 adjacent paddocks, naturally infested with ticks, at a stocking rate of approximately 0.6 of an animal unit per hectare (AU/ha). Every 18 days, the animals were weighed, and ticks on both sides of each bovine were counted. Every 36 days, blood was collected for hematocrit measurement and molecular diagnosis of the 3 pathogens that cause tick fever. The Brangus animals had 6.8 times more ticks than the Nellore cattle. No significant difference was observed in the weight gain of the Brangus and Nellore animals, and no correlation between the number of ticks and weight was observed in either group. During the 6 months of the study, all animals presented normal hematocrit, were positive for Babesia bigemina and Anaplasma marginale, and were negative for Babesia bovis. Animals in Group 1 produced 27% fewer ticks than the animals in Group 2. The production rate of engorged female ticks in Nellore and Brangus cattle was 0.83% and 2.01%, respectively. Considering the infestation pattern required to produce 10 engorged females/day/animal, the Nellore and Brangus animals required 1,204 and 497 larvae/day, respectively. Our estimates showed that Brangus cattle need only 11.3% of the larvae in the pastures with Nellore cattle to maintain the infestation level observed in the present study. Brangus animals raised with Nellore cattle do not have a lower parasitic load and continue to suffer from tick infestation. Finally, Nellore cattle raised with Brangus cattle do not act as a cleaner because this grouping does not contribute to a reduced infestation in the Brangus animals.Este trabalho teve o objetivo de avaliar o comportamento da infestação de carrapatos (Rhipicephalus microplus) em bovinos da raça Brangus associado com Nelore no Brasil central em rebanho infestado naturalmente na região do município de Água Clara, MS, Brasil. Para o experimento de campo um grupo de 15 animais em inicio de recria da raça Brangus e 15 animais da raça Nelore e outro grupo controle com 30 animais Brangus, foram mantidos em dois piquetes geminados com lotação de aproximadamente 0,6 unidade animal por hectare (Ua/ha). A cada 18 dias os carrapatos foram contados dos dois lados do corpo dos bovinos após a pesagem dos mesmos. A cada 36 dias foi colhido sangue para realizar o hematócrito e o diagnóstico molecular para os três agentes da Tristesa Parasitária Bovina (TPB). A raça Brangus produziu 6,8 vezes mais carrapatos do que o Nelore e o seu ganho de peso não apresentou diferença estatística quando comparada com a raça Nelore. Ao longo de seis meses os animais não apresentaram hematócrito abaixo do normal e todos os animais foram positivos para Babesia bigemina e Anaplasma marginale, mas todos foram negativos para Babesia bovis. Não houve correlação entre número de carrapatos e ganho em peso para os dois grupos. O Grupo 1 produziu 27% a menos carrapatos que o Grupo 2. O rendimento da taxa de recuperação de carrapatos desenvolvido com animais estabulados mostrou que a raça Angus foi a de maior rendimento, alcançando uma taxa de recuperação de 6,15% do total de teloginas, seguida pela Brangus com 2,01% e por ultimo constatando a natural resistência da raça Nelore com apenas 0,83% de teleoginas oriundas da infestação artificial. Levando em consideração que o Padrão de Infestação seja de 10 teleóginas/dia/animal o Nelore necessitou de 1.204 larvas/dia enquanto o Brangus de 497 larvas/dia. Estima-se que Brangus necessitou de apenas 11,3% das larvas nas pastagens originadas do Nelore para manter o nível de infestação apresentado neste trabalho. Os animais Brangus criados com Nelore não diminuem a carga parasitária continuando a sofrer os efeitos da ação do carrapato. Os bovinos da raça Nelore não servem como aspiradores da infestação por R. microplus, pois eles não reduzem a infestação dos bovinos Brangus.UEL2018-05-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionepidemiology, ecologyapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3018810.5433/1679-0359.2018v39n3p1099Semina: Ciências Agrárias; Vol. 39 No. 3 (2018); 1099-1114Semina: Ciências Agrárias; v. 39 n. 3 (2018); 1099-11141679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30188/23579Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessAndreotti, RenatoBarros, Jacqueline CavalcanteGarcia, Marcos ValerioRodrigues, Vinicius da SilvaHiga, Leandro de Oliveira SouzaDuarte, Pamella OliveiraBlecha, Isabella Mauimi ZaidanBonatte-Junior, Paulino2022-10-20T20:47:04Zoai:ojs.pkp.sfu.ca:article/30188Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T20:47:04Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
Infestação de carrapatos em bovinos Brangus criados com Nelore no Brasil central
title Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
spellingShingle Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
Andreotti, Renato
Bovine
Cattle tick
Control
Infestation.
Bovinos
Carrapato-do-boi
Controle
Infestação.
title_short Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
title_full Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
title_fullStr Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
title_full_unstemmed Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
title_sort Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
author Andreotti, Renato
author_facet Andreotti, Renato
Barros, Jacqueline Cavalcante
Garcia, Marcos Valerio
Rodrigues, Vinicius da Silva
Higa, Leandro de Oliveira Souza
Duarte, Pamella Oliveira
Blecha, Isabella Mauimi Zaidan
Bonatte-Junior, Paulino
author_role author
author2 Barros, Jacqueline Cavalcante
Garcia, Marcos Valerio
Rodrigues, Vinicius da Silva
Higa, Leandro de Oliveira Souza
Duarte, Pamella Oliveira
Blecha, Isabella Mauimi Zaidan
Bonatte-Junior, Paulino
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Andreotti, Renato
Barros, Jacqueline Cavalcante
Garcia, Marcos Valerio
Rodrigues, Vinicius da Silva
Higa, Leandro de Oliveira Souza
Duarte, Pamella Oliveira
Blecha, Isabella Mauimi Zaidan
Bonatte-Junior, Paulino
dc.subject.por.fl_str_mv Bovine
Cattle tick
Control
Infestation.
Bovinos
Carrapato-do-boi
Controle
Infestação.
topic Bovine
Cattle tick
Control
Infestation.
Bovinos
Carrapato-do-boi
Controle
Infestação.
description The present study evaluated the behavior of Rhipicephalus microplus naturally infesting Brangus cattle raised with Nellore animals in the municipality of Água Clara, state of Mato Grosso do Sul, Central Brazil. For the field experiment composed of a group with 15 Brangus animals and 15 Nellore animals and a control group with 30 Brangus cattle, all at the post-weaning stage. The 2 groups were kept for 6 months in 2 adjacent paddocks, naturally infested with ticks, at a stocking rate of approximately 0.6 of an animal unit per hectare (AU/ha). Every 18 days, the animals were weighed, and ticks on both sides of each bovine were counted. Every 36 days, blood was collected for hematocrit measurement and molecular diagnosis of the 3 pathogens that cause tick fever. The Brangus animals had 6.8 times more ticks than the Nellore cattle. No significant difference was observed in the weight gain of the Brangus and Nellore animals, and no correlation between the number of ticks and weight was observed in either group. During the 6 months of the study, all animals presented normal hematocrit, were positive for Babesia bigemina and Anaplasma marginale, and were negative for Babesia bovis. Animals in Group 1 produced 27% fewer ticks than the animals in Group 2. The production rate of engorged female ticks in Nellore and Brangus cattle was 0.83% and 2.01%, respectively. Considering the infestation pattern required to produce 10 engorged females/day/animal, the Nellore and Brangus animals required 1,204 and 497 larvae/day, respectively. Our estimates showed that Brangus cattle need only 11.3% of the larvae in the pastures with Nellore cattle to maintain the infestation level observed in the present study. Brangus animals raised with Nellore cattle do not have a lower parasitic load and continue to suffer from tick infestation. Finally, Nellore cattle raised with Brangus cattle do not act as a cleaner because this grouping does not contribute to a reduced infestation in the Brangus animals.
publishDate 2018
dc.date.none.fl_str_mv 2018-05-04
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
epidemiology, ecology
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30188
10.5433/1679-0359.2018v39n3p1099
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30188
identifier_str_mv 10.5433/1679-0359.2018v39n3p1099
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/30188/23579
dc.rights.driver.fl_str_mv Copyright (c) 2018 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2018 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. 39 No. 3 (2018); 1099-1114
Semina: Ciências Agrárias; v. 39 n. 3 (2018); 1099-1114
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
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