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Oestrus ovis, the sheep bot fly, is a widespread species of fly of the genus Oestrus. It is known for its parasitic predation and damage to sheep, deer, goats and sometimes cattle. There have also been many records of horse, dog [1] and human infestation. In some areas of the world it is a significant pest which affects the agricultural economy.
Swelling of the lips and tongue gives the tongue its typical blue appearance, though this sign is confined to a minority of the animals. Nasal signs may be prominent, with nasal discharge and stertorous respiration. Some animals also develop foot lesions, beginning with coronitis, with consequent lameness. In sheep, this can lead to knee-walking.
Typical signs in dogs include sneezing, nasal discharge, bleeding from the nose, and ulcerations of the nose. [23] Pythiosis is a disease caused by a water mould of the genus Pythium, P. insidiosum. It occurs primarily in dogs and horses, but can also affect humans. In dogs it affects the gastrointestinal system and lymph nodes, and rarely the ...
Symptoms in domestic sheep can range from mild respiratory disease, severe pneumonia and even death. [1] Clinical and subclinical symptoms may be present in domestic sheep. Clinical symptoms may include fever, lethargy, decreased appetite, nasal discharge, coughing, and decreased milk production in ewes. [ 1 ]
Some countries allow mulesing, a practice that involves stripping away the skin on the rump to prevent fly-strike, normally performed when the sheep is a lamb. [122] [123] Nose bots are fly larvae that inhabit a sheep's sinuses, causing breathing difficulties and discomfort. Common signs are a discharge from the nasal passage, sneezing, and ...
Symptoms of nasal adenocarcinoma are similar in both goats and sheep. They include weight loss, nasal discharge with the nasal fluid being viscous and containing pus. Tumors form in the upper nasal cavity and have a gelatinous consistency with caudal areas being having hemorrhage causing a brownish-red color. [4] Symptoms of enzootic nasal ...
enzootic nasal adenocarcinoma; foot-and-mouth disease; mastitis; Nairobi sheep disease orthonairovirus (NSDV) infection; orf, also known as contagious ecthyma, contagious pustular dermatitis, infectious labial dermatitis, thistle disease, sore mouth, or scabby mouth; ovine encephalomyelitis (louping ill) ovine progressive pneumonia (OPP)
Gasterophilus nigricornis (broad-bellied horse bot) – ranges from the Middle East to China, infects duodenum of horses and donkeys; Gasterophilus pecorum (dark-winged horse bot) – the most pathogenic species in the genus. Ranges through the Old World and infects the mouth, tongue, esophagus and stomach of horses, donkeys and zebras