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Economic performance evaluation of Brangus and Nellore cattle breed naturally infested with Rhipicephalus microplus in an extensive production system in Central-West Brazil.

Authors
  • Junior, Paulino Bonatte1
  • Rodrigues, Vinicius da Silva2
  • Garcia, Marcos Valério3
  • Higa, Leandro de Oliveira Souza4
  • Zimmermann, Namor Pinheiro5
  • Barros, Jacqueline Cavalcante6
  • Andreotti, Renato7
  • 1 Faculdade de Medicina Veterinária, UFMS - Univ. Federal Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil. , (Brazil)
  • 2 Programa de Pós-Graduação em Imunologia e Parasitologia Aplicadas, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil. , (Brazil)
  • 3 Bolsista DCR, Fundect - Governo do Estado de Mato Grosso do Sul/Laboratório de Biologia do Carrapato, Embrapa Gado de Corte, Campo Grande, Mato Grosso do Sul, Brazil. , (Brazil)
  • 4 Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil. , (Brazil)
  • 5 Centro Universitário da Grande Dourados, Dourados, Mato Grosso do Sul, Brazil. , (Brazil)
  • 6 Empresa Brasileira de Pesquisa Agropecuária, Embrapa Gado de Corte, Campo Grande, Mato Grosso do Sul, Brazil. , (Brazil)
  • 7 Empresa Brasileira de Pesquisa Agropecuária, Embrapa Gado de Corte, Campo Grande, Mato Grosso do Sul, Brazil. [email protected] , (Brazil)
Type
Published Article
Journal
Experimental and Applied Acarology
Publisher
Springer-Verlag
Publication Date
Aug 01, 2019
Volume
78
Issue
4
Pages
565–577
Identifiers
DOI: 10.1007/s10493-019-00404-1
PMID: 31352649
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The objective of the present study was to evaluate the performance of Brangus and Nellore cattle in an extensive production system. Sixty growing bulls, 30 of the Brangus and 30 of the Nellore breeds that were naturally infested with Rhipicephalus microplus were subdivided into four groups: control Nellore (15 animals), treated Nellore (15), control Brangus (15), and treated Brangus (15). The animals in the treated groups underwent acaricidal treatments for 1 year. Tick counts, acaricidal treatments and animal weighing were performed every 18 days, and the costs of acaricidal, anti-myiasis, and preventive treatments for tick fever were recorded for cost evaluation. The treated Brangus and Nellore groups did not show a significant difference in weight gain, whereas Nellore weight gain was superior in the control groups. The cost of acaricidal treatment throughout the experimental period was $494 US. The costs of the preventive treatment for tick fever and myiasis were $98 US and $15 US, respectively. The highest rates of tick infestation were found in the control group of the Brangus animals, which served as the basis for the suggested implementation of a strategic control program for animals in the growth phase. Nellore animals showed low rates of infestation. Under the conditions of this study, the Nellore animals were more efficient than the Brangus animals because they achieved satisfactory weight gain, similar to the Brangus, and a low tick count even in the control group. This finding demonstrates that expenses related to the acaricidal, anti-myiasis and tick fever treatments are unnecessary in Nellore cattle, making these animals more profitable.

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