
26/09/2025
Liver Fluke
While many areas of the country have had a very dry summer, this area had quite a lot of rain early on in June/July with some drier weather in August. There could be a risk of starting to see infections with Liver Fluke from September onwards if there was a lot of mud snail activity early in the summer. A key indicator of fluke cases in the autumn is May – June wet days. We mentioned Heamunchosis above, it is important that we do not confuse the two diseases as symptoms can be similar e.g. pale membranes, swollen faces/bottle jaw and weight loss. If in doubt please test or speak to a vet.
The most accurate way of monitoring when Liver Fluke becomes a problem on your farm is by blood sampling sentinel lambs. We recommend testing 10 lambs every month, the test costs £25 to do the 10 lambs.
The blood test will pick up Liver Fluke 2 weeks after infection whereas Fluke egg counts will only identify adult Liver Fluke 10-12 weeks after infection. Muck testing lambs in the autumn is not an accurate way of detecting Liver Fluke.