Ovine pulmonary adenocarcinoma 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 years of age). Clinical signs resemble a non-specific progressive pneumonia, including poor body condition and, particularly after exercise, respiratory difficulty. Unless a concurrent lung infection is present, affected sheep continue to eat. The only sign specific to OPA is a watery nasal discharge, consisting
Animal law and using the law to protect the lives and advance the interests of animals. In the Swiss canton of Zurich an animal lawyer, Antoine Goetschel, was employed by the canton government to represent the interests of animals in animal cruelty cases from 2007 to 31 December 2010, when the Zurich Animal Advocate position was abolished. In this capacity, Goetschel attempted to ensure that Swiss animal protection laws, which are among the strictest in the world, were correctly enforced. The UK Centre for Animal Law (A-law) is the UK's leading animal law charity. It publishes "The UK Journal of Animal Law"