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Veterinary Archives, Vol. 89 No. 1, 2019.

Original scientific paper

https://doi.org/10.24099/vet.arhiv.0163

Precolostral evaluation of Bovine Enterovirus Type 1 (BEV1) infection in a dairy herd

Fatih M. Birdane ; Department of Internal Medicine, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Turkey
Sibel Gür ; Department of Virology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Turkey

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Abstract

Bovine Enterovirus Type 1 (BEV1) is a viral infection affecting the respiratory, alimentary and reproduction systems, and is accepted as an environmental pollutant due to its resistant features over a long period of time under field conditions. Since calves are born agamaglobulinemic due to syndesmochorial placenta features that block immunoglobulin transfer to the fetus from the dam, the presence of precolostral antibodies directly reflects the defeat of an in-utero infection in the last five months of gestation. In this study, BEV1 was investigated serologically in dams and their precolostral calves. The Virus Neutralisation Test (VNT) was preferred due to its high sensitivity and specificity. The samples were collected simultaneously, shortly after parturition on a large-scale dairy farm. The results of the test showed that 98.7% (153/155) of the dams were seropositive for BEV1. The average antibody (Ab) titer was the highest at 1/20 dilution. Out of 155 precolostral calves, specific Abs were determined in 8 (5.1%). The Ab titer distributions in the calves varied between 1/5 and 1/40, and the peak dilution point was 1/10 in calves while it was 1/80 in their dams. Current veterinary practice is long outdated and needs to be replaced by preventive programs to combat diseases, which are crucial, especially for dairy herds. Precolostral Ab control of newborn calves is preferred as a useful, feasible and reliable tool for detecting recent infections to discover the risks.

Keywords

Bovine Enterovirus Type 1; ECBO virus; precolostral; serocontrol

Hrčak ID:

217676

URI

https://hrcak.srce.hr/217676

Publication date:

8.3.2019.

Article data in other languages: croatian

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