- an acute, usually fatal disease of sheep caused by general intoxication from Clostridium novyi, an anaerobic organism that multiplies in parts of the liver damaged by the common liver fluke.
- an infectious necrotic hepatitis in sheep and occasionally cattle caused by to toxins produced by infection with species of Clostridial . Secondary to liver fluke infestation, the disease is characterized by sudden death. So-called because of the black discolouration of subcutaneous tissues due to congestion and haemorrhage seen at post-mortem
