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 Hospital Animal Hospital Animal Hospital is a British television show starring Australian singer and TV presenter Rolf Harris that ran on BBC One from 1994 until 2004. The series featured animal welfare stories from many RSPCA hospitals, including Harmsworth Animal Hospital in North London. Harmsworth Animal Hospital in North London was the first of three RSPCA hospitals that opened their doors to allow the BBC to produce this factual television show which ran for over a decade. The programmes were presented by Rolf Harris. After Harmsworth, the series moved to the Putney Animal Hospital in South London, and then to Salford