Gastrointestinal parasites occurrence in dairy cows kept in organic and conventional production system

Autores

  • Jenevaldo Barbosa da Silva Unversidade Federal Rural do Rio de Janeiro
  • João Paulo Guimarães Soares Empresa Brasileira de Pesquisa Agropecuaria
  • Adivaldo Henrique da Fonseca Universidade Federal Rural do Rio de Janeiro

DOI:

https://doi.org/10.5433/1679-0359.2012v33n6p2375

Palavras-chave:

Helminths, Sustainable production, Immune decrease.

Resumo

The main aim of this study was to determine the effects of pregnancy, calving, lactation, lactation number and seasons on the population of gastrointestinal helminths in dairy cows kept in organic and conventional production system. Between January 2007 and December 2009, coproparasitologic exams were performed using 72 and 43cows kept in conventional and organic system, respectively. The data was submitted to analysis of variance and Student and Tukey test, both at 5% of significance level. There was no difference (p > 0.05) between faecal egg count (FEC) of organic and conventional animals. The mean FEC during calving and lactation was higher (p < 0.05) than during pregnancy. There was no effect of season on the FEC in dairy cows kept in conventional system, while the dairy cows kept in organic system were significantly (p <0 .05) more infected during the rainy season. In both production systems the primiparous animals showed FEC significantly higher (p < 0.05) than pluriparous animals. Dairy cows kept in organic and conventional system were equally vulnerable to the subclinical helminthiasis, and the birth order was a risk factor in both systems.

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Biografia do Autor

Jenevaldo Barbosa da Silva, Unversidade Federal Rural do Rio de Janeiro

Médico Veterinário formado pela UFRRJ. Pos graduando em Ciências Veterinarias pela UFRRJ. Atua nas áreas de Helmintologia e Doenças Transmitidas por Carrapatos.

João Paulo Guimarães Soares, Empresa Brasileira de Pesquisa Agropecuaria

Pesquisador da Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA, Brasília, DF.

Adivaldo Henrique da Fonseca, Universidade Federal Rural do Rio de Janeiro

Prof. da Universidade Federal Rural do Rio de Janeiro, UFRRJ, Seropédica, RJ.

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Publicado

2012-12-05

Como Citar

Silva, J. B. da, Soares, J. P. G., & Fonseca, A. H. da. (2012). Gastrointestinal parasites occurrence in dairy cows kept in organic and conventional production system. Semina: Ciências Agrárias, 33(6), 2375–2382. https://doi.org/10.5433/1679-0359.2012v33n6p2375

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