Serological evaluation of bovine herpesvirus 1 and 5 in cattle-breeding systems on Colombia’s high plains

Serological evaluation of bovine herpesvirus 1 and 5 in cattle-breeding systems on Colombia’s high plains

Objective. The aim of this study was to determine the presence of Bovine herpesvirus – 1 (BoHV- 1) and Bovine herpesvirus 5 (BoHV-5) neutralizing antibodies in herds on the Colombian high plains and their correlation with the level of cross-protection against both herpesviruses. Materials and methods. This study was carried out on cattle farms located around the towns of Puerto López and Puerto Gaitán in Colombia’s Meta department. Sampling was made by convenience. Twenty-three farms were involved in the study; 488 sera samples were taken by random sampling. Virus neutralization test were performed according to the protocols of the OIE. Each serum was evaluated independently for each virus, BoHV-1 and BoHV-5. Results. The serological test confirmed the presence of BoHV-1 and BoHV-5 infections in the Colombian bovine population in 100% and 73.9% respectively. However, crossreaction for both viruses was not evident in all farms evaluated. Conclusions. Alpha-herpesviruses are amongst the most significant infectious agents affecting cattle. Bovine herpesvirus 1 (BoHV-1) is found throughout the whole world and is endemic in Colombian bovine population, whereas bovine herpesvirus 5 (BoHV-5) has limited geographical distribution, mainly being reported in South-America (Brazil and Argentina), and we also confirmed the presence of BoHV-5 in Colombia.

Objetivo. El objetivo de este estudio fue determinar la presencia de anticuerpos para herpesvirus bovino 1 (BoHV-1) y herpesvirus bovino 5 (BoHV-5), así como también determinar el nivel de protección cruzada contra los dos herpesvirus en hatos de la altillanura colombiana. Materiales y métodos. Este estudio se realizó en fincas ubicadas en los municipios de Puerto López y Puerto Gaitán departamento del Meta. Se realizó un muestreo por conveniencia. Se emplearon 23 fincas, donde se realizó un muestreo al azar en cada una para un total de 488 muestras. Las muestras de suero fueron analizadas mediante sero-neutralización viral empleando los protocolos de la OIE. Cada uno de los sueros fue evaluado de manera independiente para cada uno de los virus BoHV-1 y BoHV-5. Resultados. Mediante la sero-neutralización viral se confirmó la presencia de BoHV-1 y BoHV-5 en la población bovina colombiana en 100% y 73.9%, respectivamente. Sin embargo, la reactividad 2016 cruzada no fue evidente en todas las fincas evaluadas. Conclusiones. Los alfa-herpesvirus bovinos se encuentran entre los agentes infecciosos más importantes del ganado bovino. Particularmente, el herpesvirus bovino 1 (BoHV-1) presenta una distribución mundial, siendo endémico en la población bovina colombiana, mientras que el herpesvirus bovino 5 (BoHV-5), presenta una distribución geográfica limitada; reportándose principalmente en Suramérica (Brasil y Argentina), comprobándose la presencia de este en los hatos colombianos.

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