Ovine pulmonary adenocarcinoma as an animal model for human lung cancer, because OPA is histologically similar to human adenocarcinoma in situ of the lung. Dolly the sheep, the first mammal successfully cloned from an adult somatic cell, was euthanized after it was confirmed that she had OPA. Ovine pulmonary adenocarcinoma 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). The disease has a long incubation period, and therefore signs usually occur in adult animals (over 2
Animal welfare in Thailand through a process of beatings to "mentally break" them, to make them submissive for the lucrative entertainment of tourists in tourist parks. Animal welfare advocates have called for better legislation and systems to document the origin of elephants in tourist camps and other locations across 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)"