GIT Pathology 6 (Cattle) Flashcards
What is the main lesion seen in foot and mouth disease?
The formation of epidermal vesicles in and around the mouth, on the feet, teats and mammary glands.
Where do lesions of vesicular stomatitis usually occur?
On the oral mucosea
Which species does bovine papular stomatitis occur?
Cattle and humans
What do the lesions of bovin papular stomatitis look like?
Initially they are on the mussle and lips and appear as erythematous, round macules then papule, epithelial hyperplasia and a central area of necrosis leaving a crateriform lesion with raised borders.
Where is the primary replication of BVDV-1?
Oropharyngeal lymphoid tissues
What is the main types of lesions of infectious bovine rhinotracheitis in the GIT?
Focal areas of necrosis, erosion and ulceration (sometimes linear)
List two species that are asymptomatic for malignant catarrhal fever
Sheep/goats
What are the main clinical signs of malignant catarrhal fever?
Erosion/ulceration of nasal planum
Buccal cavity and tongue ulceration
Ocular/nasal discharge
Corneal opacity
How does bluetongue virus spread?
Culicoides
How does bluetongue cause disease?
Endothelial damage caused by viral infection initiating local microvascular thrombosis and permability leading respectively to ischemic necrosis and ulceration. Oedema caused by vascular permability and haemorrhage resulting from vascular damage.
What is the principal cause of necrobacillosis?
Fusobacterium necrophorum
What pathogen causes wooden tongue?
Actinobacillus lignieresii
What type of lesions are seen with ‘wooden tongue’?
Pyogranulomatous
Which pathogen causes lumpy jaw?
Actinomyces bovis
What signs are seen with lumpy jaw?
Pyogranulomatous manidbular and maxillary osteomyelitis
