Jaagsiekte sheep retrovirus Jaagsiekte sheep retrovirus Jaagsiekte sheep retrovirus (JSRV) is a betaretrovirus which is the causative agent of a contagious lung cancer in sheep, called ovine pulmonary adenocarcinoma. 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. Transmission of virus is through aerosol spread between sheep. The exogenous infectious form of
Animal welfare in Thailand Animal welfare in Thailand Animal welfare in Thailand relates to the treatment of animals in fields such as agriculture, hunting, medical testing and the domestic ownership of animals. It is distinct from animal conservation. Thailand introduced its first animal welfare law in 2014. The "Cruelty Prevention and Welfare of Animal Act, B.E. 2557 (2014)" came into being on 27 December 2014. Animals protected by the law are defined as those "raised as pets, as animals for work, as beasts of burden, as friends, as livestock, as performing show animals, or for any other purpose, no matter with or without owners".