Prevalence of antibodies to bovid herpesvirus 1 (IBR-IPV), bovine virus diarrhoea, bovine respiratory syncytial parainfluenza 3, adeno A and adeno B viruses in indigenous and imported Moroccan cattle.

A serological survey on prevalence of antibodies to Bovid herpesvirus 1 (IBR-IPV) Bovine Virus Diarrhoea, Bovine Respiratory Syncytial, Parainfluenza 3, Adeno A and B viruses was performed in 524 cattle from different areas and management conditions in Morocco. General antibody prevalence was 62.8, 48.5, 70.4, 68.1, 9.0 and 12.4, for the six viruses, respectively. Higher prevalence and high antibody titers to most of the investigated viruses were found among cattle from extensive management systems, with few contacts with imported breeds, and without history of respiratory disease in the area. The significance of these findings is discussed with regards to the risk of the spreading of new diseases with the importation of foreign cattle into the country.