Cattle tick infestation in Brangus cattle raised with Nellore in central Brazil
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/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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Semina. Ciências Agrárias (Online) |
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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 |
_version_ |
1799306078316396544 |