Table 1 Score system to evaluate hepatic gross lesions in sheep
From: Efficacy of a multivalent vaccine against Fasciola hepatica infection in sheep
| Score | Gross pathology |
|---|---|
| 0 | Absolutely no pathology evident, liver normal colour, consistency, and no visible signs of fluke lesions |
| 1 | Small areas of scar tissue and lesions, < 5% of the liver affected |
| 2 | Moderate areas of scar tissue and lesions, occurring in 5–10% of the liver |
| 3 | Moderate areas of scar tissue, thickening of bile ducts, small to moderate areas of necrosis, pus, 10-20% of liver affected |
| 4 | Moderate to large areas of scar tissue, thickened bile ducts evident. Moderate areas of necrosis, pus, haemorrhage, 20-30% of liver affected |
| 5 | Large areas of scar tissue, thickened bile ducts. Multiple necrotic foci, pus, haemorrhage, severe degeneration and > 30% of the total liver affected |