Читать книгу Farm Animal Medicine and Surgery - Graham R Duncanson - Страница 123

• Abscesses are a common finding in the liver of healthy cattle at slaughter (see Chapter 4).

• Black’s disease (see above).

• Fasciolisis (see above).

• Fatty liver syndrome. This is a disease of dairy cows which are too fat at parturition, and their livers cannot cope with the demands of lactation. Treatment is with dexamethasone and glucose by injection iv and orally, in severe cases.

• Plant toxicity. Toxic plants include: blue-green algae (which contain Cyanobacteria spp.), bog asphodel (Narthecium ossifragum, found on marshy ground and dangerous in hay (Angell and Ross, 2011), fungi containing mycotoxins (mainly aflatoxins), Panicum spp. (grown as a fodder crop in tropical and subtropical areas and dangerous only when fed to excess), ragwort (Senecio jacobea, particularly dangerous to cattle in hay) and St John’s wort (Hypericum perforatum, consumed after ditch clearing).

• Rift Valley fever (RVF) (mainly a disease of sheep and goats found in Africa, but causes abortion in cattle, see below).

• Tumours of the liver are rare (they are mainly adenomas or adenocarcinomas).