Animal health Parasite forecasts help
keep on top of worm risk • Reduce losses on farm due to worms • Tackle issues before symptoms appear • Optimise dosing at appropriate time
about worm, fl uke and fl y risks has launched for 2019. The Parasite Watch scheme estimates worm, fl uke and fl y risk on UK farms by comparing 10 years of validated weather data to faecal egg count tests conduct- ed by farmers on 24 farms nation- wide. Results are then combined to provide a forecast. Farms involved in the scheme
A
have faecal samples taken every two weeks to detect major stom- ach worms and Nematodirus. Fluke is tested regularly during
parasite forecasting service giving farmers real-time information
risk periods using copro-antigen testing. Flies are also monitored using fl y traps.
Fourth year
It is the fourth consecutive year Zoetis is running the scheme. The number of farms involved this year has increased from 18 to 24. Additionally, treatment and management data for the farms will also be available allowing better decision making. Using a free scheme like Par-
asite Watch to keep abreast with parasite risks in the local area as well as conducting regular faecal egg counts can help save farmers
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money, says Zoetis national veter- inary manager Dave Armstrong. “Sheep farmers need to be looking at ways to reduce loss- es on farm due to worms, and in a responsible way,” he explains. “Monitoring services like Para- site Watch can alert you to risks in your area.” Stomach worms are estimated
to cost the British Sheep indus- try some £84m annually, says Mr Armstrong. “It may prompt you to conduct a faecal egg count test to see whether there are any worm issues before symptoms appear.”
Worm burden Sheep farmer Allan Smellie has been involved with Parasite Watch for the last three years. He uses faecal egg count tests to help pinpoint the best time to dose sheep. “Quite often we wouldn’t
Avoid routine worming of ewes at lambing
With widespread resistance to wormers now being detected on many sheep farms across the UK, producers are being warned against blanket worming all ewes at lambing time.
Although late pregnancy and early lactation can present a high- er-risk period for ewes, blanket treatment may not be needed, says vet Iolo White. Instead, faecal egg counts should be used to assess the level of risk before worming.
see symptoms, but when we’ve done an egg count test there’s been a worm burden there.” Dosing appropriately – and at the right time – means Mr Smell- ie no longer loses any growth from worms. The strategy has helped him optimise productivity, he says.
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