Seroprevalencia de Leucosis Enzoótica Bovina en tambos del sur de la provincia de Córdoba, Argentina.

MAGNANO, G.; MACIAS, A.; SCHNEIDER, M.; MACIÓ, M.; PETERSEN, M.; RUIZ, V.; PORTA, N.; STICOTTI, E.; GIRAUDO, J.

Revista Veterinaria Argentina

Ing. Norberto A. Speroni

Lugar: Ciudad Autónoma de Buenos Aires - Argentina; Año: 2019 vol. XXXV p. 1 - 7

1852-317X

Enzootic Bovine Leukosis (EBL) affects the lymphoid tissue and the distinctive pathological feature is the neoplastic transformation of B lymphocytes, its frequency is predominant in adult dairy cattle. In Argentina, are few prevalence studies in the main cattle regions. The National Service for Agrifood Health and Quality (SENASA), through its resolution No. 377/94, established, optionally, the Certification System for Officially Free Establishments of LEB in the Argentine Republic. However, very few detours have been registered in the system since the regulations exist. In Córdoba there are 3,393 dairy farms. The objective of this work was to know the seroprevalence of EBL in dairy farms in the southern region of the Province of Córdoba. Twenty-four establishments from 6 departments were analyzed; sera from cows and heifers were selected for serological diagnosis by ELISA. All the dairy farms were categorized as positive, the average of infected cows was 91% (min.: 70%, max.:100%), while in the heifers the median was 69% (min.: 9%, max.: 100%). If we contrast these data with previous surveys published by other authors we can conclude that the disease has had a very important spread in the last two decades. The intensification of these productive systems and the few effective tools and strategies control may have favored the current situation of the disease in dairy farms.