First cases of intoxication by Pithomyces chartarum in bovines of Ecuador.

Abstract:

Pithomycotoxicosis is a disease caused by the cosmopolitan fungus Pithomyces chartarum, whose proliferation is favored in warm climates and with moderate to high humidity. The mycotoxin that specifically causes the photosensitivity to the animals suffering from the pathology, has been named sporidesmin, which is found in the spores that the fungus produces; generating alterations in the liver specifically in the bile ducts, presenting a pericholangitis due to occlusion of the bile ducts, which leads to the loss of excretion of phyloerythrin, which is a photodynamic metabolite product of the microbial degradation of chlorophyll, which is found in the rumen of the animal. The species reported as susceptible to suffer from this pathology are cattle, sheep, deer, goats, buffaloes and even equines, although in the latter has not reported alterations in the liver, but if the pathways affecting the upper areas generating rhinitis allergic, and in chronic conditions, to sinusitis. Pithomycotoxicosis has been reported in Europe, Africa, Asia, Oceania and America; with emphasis on Brazil and its bordering countries; but in Ecuador they are the first cases diagnosed by macroscopic and microscopic anatomopathological lesions, in addition to the presence of the agent in pastures of the genus Brachiaria, specifically the decumbens species.

Año de publicación:

2018

Keywords:

Fuente:

google