In recent weeks we have identified liver fluke infections as a threat in 2 ewe flocks. While liver fluke had been seen on these properties in the past it does not appear to have been a problem in the last two seasons. However liver fluke egg counts that were carried out after liver fluke were noted in dog tucker ewes revealed that significant liver fluke infection was widespread in the ewe flock (although ewes to date were in good order).
Both farms were advised to drench the entire ewe flock for liver fluke and also to treat cattle over one year old.
Our suspicion is that recent dry seasons have lead to increased grazing into wet areas resulting in a gradual build up in the number of infected sheep and cattle. This led to more fluke eggs being deposited onto pasture over winter and spring. A wet summer has been great for infected snail survival and the spread of liver fluke, resulting in increased numbers of stock picking up fluke over late spring and summer when livestock infection occurs.
If you have previously had problems with liver fluke or have “skinny ewes” appearing as lambing approaches consider liver fluke as a possibility and call the clinic to discuss the best “course of action”.