[Bovin viral diarrhoea and paratuberculosis: what solutions?] | BVD et paratuberculose : quelles solutions?

belgique belgium bovin cattle control de enfermedades diagnosis diagnostic diarrea diarrhoea disease control disease resistance disease surveillance disease surveys encuestas sanitarias ganado bovino paratuberculose paratuberculosis resistencia a la enfermedad symptome symptoms vigilancia de enfermedades virose viroses virosis