49. Rhinitis (in general); different rhinitis of swine; malignant catarrhal fever Flashcards
non infectious causes of rhinitis
dust, gas
inflammation which therefore decrease resistance to facultative pathogenic bacteria
infectious causes of rhinitis
obligatory pathogens - airborn, haematogenous, intracanalicular spread
facultative pathogens
forms of rhinitis
serous
catarrhal
ulcerative
pseudomembranaceous
purulent
etiology of atrpohic rhinitis of swine
Bordetella bronchiseptica
Pasteurella multocida
infection of atrophic rhinitis of swine
vertical from sow in first days of life
pathogenesis of atrophic rhinitis of swine
damages on the nasal mucous membrane
osteoblast cytopathy problems in ossification
(maxilla!). Uni or bilateral
Campylognathia, brachygnatia.
Complications (no filtration): pneumonia, leptomeningitis
symptoms of atrophic rhinitis of swine
several weeks after infection
epystaxis, torsion, bespectacled pigs
pathology of atrophic rhinitis of swine
torsion
atrophy
etiology of inclusion body rhinitis
suid herpesvirus 2 porcine cytomegalovirus
symptoms of etiology of inclusion body rhinitis
nasal discharge
pathology of etiology of inclusion body rhinitis
serous - purulent rhinitis
inclusion bodies
Stachybotris toxin caused rhinitis causes
necrosis
cause of malignant catarrhal fever
Herpesviridae,
Maca virus : Alcelaphine Herpes Virus 1 (AlHV 1) and Ovine Herpes Virus 2 (OvHV 2)
symptoms of malignant catarrhal fever
fever
anorexia
depression
profuse diarrhoea
hyalinosis degeneration, thrombosis
cornea-opacity, haemorrhages, kcv
meningoecephalitis
inflammatory necrotic foci
pathology of malignant catarrhal fever
Virus multiplication in the lymphoid tissues (leucopoenia, lymphoclasia)
Epithelial lesions: hydropic degeneration, necrosis stratum spinosum ) –> erosion, ulceration: sharp edged, circular ulcers on muzzle, dental pad, palate, tongue, pharynx, oesophagus, rumen, omasum
