If they have to be unloaded, it is advisable to clean and disinfect any area where BVD-positive animals have been before other cattle use the same hard standing or equipment.
Os oes rhaid eu dadlwytho, fe'ch cynghorir i lanhau a diheintio unrhyw ardal lle mae anifeiliaid BVD Positif wedi bod cyn i wartheg eraill ddefnyddio'r un ardal neu offer