Sero-epidemiological and reproductive survey for alphaherpesvirus infections in horses in the state of Pernambuco, Brazil

Authors

DOI:

https://doi.org/10.5433/1679-0359.2020v41n3p1079

Keywords:

Abortion, Equid alphaherpesvirus, Virus neutralization, Prophylaxis.

Abstract

Equine alphaherpesvirus is a major pathogen that causes respiratory disorders, abortion, neurological syndromes, and perinatal mortality in horse populations worldwide. The aim of this study was to determine whether the occurrence of anti-alphaherpesvirus antibodies is correlated to reproductive abnormalities in horses in the state of Pernambuco, Brazil. The virus neutralization was carried out in 322 serological samples from unvaccinated horses from 42 farms located in 16 municipalities in the Microregion of the Vale do Ipojuca, Pernambuco, Brazil. Of these horses, 23.3% (75/322; 95% CI: 18.9-28.4%) were found to be reactive to anti-alphaherpesvirus antibodies. In addition, 61.9% (26/42) of farms had at least one reactive animal, with an inter-herd variation of 5% to 100%. With regard to reproductive rates, herpetic infection was associated with the use of biological reproductive techniques such as artificial insemination (AI) and embryo transfer (ET), which uses natural mating (p = 0.003); history of perinatal mortality (p = 0.004); birth interval greater than two years (p = 0.003); and reproductive seasonality of mares with irregular cycles in the herd (p = 0.041). This is the first report on the identification of horses reactive to anti-alphaherpesvirus antibody in the state of Pernambuco, Brazil. From the results obtained, the adoption of prophylactic measures such as vaccination is suggested in order to prevent infection in susceptible animals and to reduce the viral load excreted by animals with quiescent infection.

Author Biographies

Talita D'Paula Tavares Pereira Muniz, Universidade Federal Rural de Pernambuco

Discente, Curso de Mestrado, Programa de Pós-Graduação em Ciência Animal Tropical, Universidade Federal Rural de Pernambuco, UFRPE, Recife, PE, Brasil.

Maria do Carmo Custódio de Souza Hunold Lara, Instituto Biológico

Pesquisadora, Instituto Biológico, IB, São Paulo, SP, Brasil

Eliana Monteforte Cassaro Villalobos, Instituto Biológico

Pesquisadora, Instituto Biológico, IB, São Paulo, SP, Brasil

José Wilton Pinheiro Junior, Universidade Federal Rural de Pernambuco

Prof., Programa de Pós-Graduação em Ciência Animal Tropical, UFRPE, Recife, PE, Brasil.

Ewerton Renner Gomes de Oliveira, Universidade Federal Rural de Pernambuco

Discente, Graduação em Medicina Veterinária, UFRPE, Garanhuns, PE, Brasil.

Gustavo Ferrer Carneiro, Universidade Federal Rural de Pernambuco

Prof., Programa de Pós-Graduação em Ciência Animal Tropical, UFRPE, Recife, PE, Brasil.

References

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Published

2020-04-07

How to Cite

Muniz, T. D. T. P., Lara, M. do C. C. de S. H., Villalobos, E. M. C., Pinheiro Junior, J. W., Oliveira, E. R. G. de, & Carneiro, G. F. (2020). Sero-epidemiological and reproductive survey for alphaherpesvirus infections in horses in the state of Pernambuco, Brazil. Semina: Ciências Agrárias, 41(3), 1079–1086. https://doi.org/10.5433/1679-0359.2020v41n3p1079

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Section

Communication

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