Seropositivity for Bovine Viral Diarrhea and Enzootic Bovine Leukemia viruses in Blanco Orejinegro cattle in Colombia and infection associated-factors

Serological controls for diseases of viral origin in animal production systems and the identification factors associated with infections are decisive elements to establish prevention control measures. The aim this study was serological status Bovine Viral Diarrhea (BVD) Enzootic Leukemia (EBL) viruses Blanco Orejinegro (BON) cattle from Colombia, identify seropositivity. A cross-sectional conducted a total 498 animals all age groups physiological states BON breed were selected, belonging 14 herds located 6 which survey 27 questions conducted. By means chi-square test, possible seropositivity against 2 identified. sample 4 ml blood taken each extract plasma make indirect Elisa tests detect antibodies both pathogens. General 27,1% obtained EBL, finding as inadequate disposition placental tissues after delivery cows non-performance on new entering herd. For BVD, 50,6%, identified having had history disease herd, using semen bulls that not known be free infection. We suggest establishing measures considering infection limit their expansion Colombia.