Case 1. An increase in mortality occurred in a herd of 7000 free ranging Rhim gazelles (Gazella subgutturosa marica) in the UAE. Post-mortem revealed ruminal bloat and generalized haemorrhagic gastro-enteritis. Laboratory diagnosis confirmed Clostridium perfringens (direct smears and toxins found) enterotoxaemia and coli septicaemia. As this disease process was considered multifactorial, dietar...

The viral haemorrhagic septicaemia virus (VHSV) comprises 4 major genotypes and a number of subtypes with, in most cases, distinct geographical distribution. A quick and simple detection method that can discriminate the different genotypes is desirable for a quick and more efficient prevention of the spread of genotypes to new geographical areas. A monoclonal antibody (MAb) against VHSV genotyp...

Forty Pasteurella multocida strains of serotype B:2,5 were collected from cattle affected with haemorrhagic septicaemia, and 72 strains mainly of serotype A:3, were isolated from calves with changes typical of bronchopneumonia. The outer membrane proteins (OMPs) were prepared by extraction, with 1% sarcosyl from field strains and two reference strains. OMPs were separated electrophoretically at...

The studies involved P. multocida of serotype B:2,5 isolated from animal affected with haemorrhagic septicaemia. Outer membrane proteins (OMPs) and iron-regulated outer membrane proteins (IROMPs) were prepared by extraction with 1% sarcosyl from the strain cultured on BHI medium and on a medium supplemented with 2,2’-dipyridyl. The antigen complexes were used to immunize calves. Each vaccine do...

A commercial plant extract derived from olive tree leaf (Olea europaea) (LExt) and its major compound, oleuropein (Ole), inhibited the in vitro infectivity of the viral haemorrhagic septicaemia virus (VHSV), a salmonid rhabdovirus. Incubation of virus with LExt or Ole before infection reduced the viral infectivity to 10 and 30%, respectively. Furthermore, LExt drastically decreased VHSV titers ...