Search results
Results from the WOW.Com Content Network
JSRV is the virus that is the cause of the contagious lung tumors in sheep called ovine pulmonary adenocarcinoma (OPA). The disease has also been called "jaagsiekte", after the Afrikaans words for "chase" (jaag) and "sickness" (siekte), to describe the respiratory distress observed in an animal out of breath from being chased, indicating the breathing difficulty experienced by infected sheep.
OPA was first described in the UK in 1888, [4] and described in detail in South Africa in 1891. [6] The disease was initially known as jaagsiekte [jɑːχˈsiktə], a word derived from Afrikaans, meaning "chasing sickness", so called because animals are in respiratory distress as if they are out of breath from being chased. [6]
Visna-maedi virus (also known as Visna virus, Maedi-visna virus and Ovine lentivirus [1]) from the genus Lentivirus and subfamily Orthoretrovirinae, is a retrovirus that causes encephalitis and chronic pneumonitis in sheep. [2] [3] [4] It is known as visna when found in the brain, and maedi when infecting the lungs.
Diseases caused by bacteria include: . anaplasmosis; blackleg; braxy; brucellosis; caseous lymphadenitis; chlamydiosis, also known as enzootic abortion of ewes (EAE); contagious caprine pleuropneumonia
The enzootic nasal tumor virus of the betaretrovirus genus is a carcinogenic retrovirus that causes enzootic nasal adenocarcinoma in sheep and goats. [1] Strain ENTV-1 is found in sheep and strain ENTV-2 is found in goats.
Betaretrovirus is a genus of the Retroviridae family.It has type B or type D morphology.The type B is common for a few exogenous, vertically transmitted and endogenous viruses of mice; some primate and sheep viruses are the type D. [citation needed]
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 ...
A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. [2] After invading a host cell's cytoplasm , the virus uses its own reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus retro (backward).