Parasite Watch, Sheep farming


As the year progresses, it’s time to start thinking about the autumn parasite challenges, we’ve seen some very high worm egg counts this year which could continue into the tupping season. Continuation of the current warm, wet weather could result in us seeing an earlier fluke challenge too.

Both stomach worms and fluke have high production costs associated with lack of control. Gut worms result in reduced weight gains of up to 47%1 and good control can give up to 4.7kg extra live weight during the grazing season2, additionally, Fluke can cost £3 to £5 per infected sheep3. Thus, choosing the correct treatment at the correct time can mean faster growing, more productive sheep.

Although it has been established that well-conditioned adult ewes will often not benefit from worming, it is important that your flock are in the best possible condition for tupping time to ensure a successful lambing time next year. Also, any lambs that are still on the farm may benefit from treatment for mixed infestations of worms and fluke, if present.

Treatment for stomach worms

If there is a need to treat for stomach worms it is very important to choose a product that will be highly effective on your farm. Don’t compromise on worm control as there is a need to remove potential resistant worms that have built up during the season. Wormer resistance has reached substantial levels throughout the UK as the latest figures show4;



Treatment for fluke

Treating for fluke isn’t something we normally think about until nearer to tupping time. However, there is potential to get caught out, it takes 12 weeks from a sheep becoming infected with fluke to producing egg laying adults that go onto further contaminate the pasture. It is not the just the adult fluke that are a risk, the migrating immature fluke can cause sudden death and predispose to clostridial disease.  Therefore it is very important to select a product for the age group of fluke you need to treat and don’t compromise on fluke control.

Adapted from: Fairweather, I and Boray. JC (1999) Mechanisms of fasciolicide action and drug resistance in Fasciola hepatica.  Chapter 7 in Fasciolosis, Ed JP Dalton. CAB International. Pp 225-276. Early immature: 1-4 weeks; Late immature: 6-8 weeks; Adult: 8-12 weeks.Ref: VICH Guideline 13,  efficacy of anthelmintics: specific recommendations for ovines. EMEA, 1999.


CYDECTIN® TriclaMox® Drench for Sheep

CYDECTIN TriclaMox Drench is a combination product containing moxidectin and triclabendazole for mixed infestations; triclabendazole has the widest spectrum of activity against fluke and moxidectin is potent and persistent against sheep roundworms.

CYDECTIN TriclaMox is the only combination product to provide a long action against worms and treat the broadest spectrum of fluke from a single drench, leading to:

  • A reduction in pasture worm contamination
  • Reduced worm and fluke threat to treated animals
  • Convenience of a single potent and persistent drench to treat mixed infestations


1. Charlier, J. et al 2014: Trends in Parasitology, Vol. 30, No. 7, 2. Miller et al Veterinary Parasitology doi:10.1016/j.vetpar2011.11.063, 3. Sheep Health and Welfare Group Report (2016), 4. WAARD Project Final Report. Sept 2015.

CYDECTIN TRICLAMOX 1 MG/ML + 50 MG/ML ORAL SOLUTION FOR SHEEP contains moxidectin and triclabendazole. For the treatment of mixed nematode and fluke infections in sheep, caused by moxidectin and triclabendazole sensitive parasites in sheep. POM-VPS

For information about side effects, precautions, warnings and contra-indications for these products, please refer to the product packaging and package leaflet.

For further information please see the product’s SPC or contact Zoetis UK Limited, Walton Oaks, Dorking Road, Tadworth, Surrey KT20 7NS. Customer Support: 0845 300 8034.

Use medicines responsibly ( Date of preparation: August 2017 AH597/17