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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)
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 ...
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 ]
In the case of stomach-bots it is often uncertain how much clinical disease or loss of production small levels of infestation causes the host. With infestations of warble-flies and nasal-bots severe distress to the hosts may be caused and there are production losses from reduction of value of cattle hides, and reduced grazing time by sheep.
A collage of JSRV-infected sheep lung tumors. Ovine pulmonary adenocarcinoma (OPA), also known as ovine pulmonary adenomatosis, or jaagsiekte, is a chronic and contagious disease of the lungs of sheep and goats. OPA is caused by a retrovirus called jaagsiekte sheep retrovirus (JSRV).
It is caused by the Enzootic nasal tumor virus, a retrovirus similar to Jaagsiekte sheep retrovirus, which causes a similar disease, also in sheep and goats called Ovine pulmonary adenocarcinoma (OPA). [1] Symptoms include nasal discharge, dyspnea, facial deformity, and weight loss. Like OPA, the disease has a very long incubation period and is ...
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. In cattle, constant changing of position of the feet gives bluetongue the nickname the dancing disease. [12]
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 ...