Pre-housing health check: worm and fluke control

We all appreciate the transition into housing is a risky time for first grazing season animals, there are so many things to consider; dietary change, weaning, grouping, respiratory disease, and how to control parasites specifically fluke and worms.

For a successful housing time, both internal and external parasites must be accounted for;

Gut worms - Reduced weight gain, carcass quality and a cost to the immune system of controlling parasites. Costs have been put at a 30% reduction in growth rate1, and 30kg difference at finishing for animals with good control at the time of housing2.

Gut worms

Lungworm - Coughing, weight loss and in severe cases death. With a cost to the immune system of controlling parasites and predisposing to respiratory disease. An average of 1-7% mortality rate, although it is likely that subclinical infections could be of far greater economic relevance3.


Fluke - Reduced live weight gain, treatment costs and a cost to the immune system of controlling parasites. The cost of fluke to the UK industry has been estimated at £23 million4, with an extra 80 days to reach slaughter weight costing between £25 and £35 per head5.


Lice - Anaemia from high burden of sucking lice. Pruritus (itching) leading to less time eating and lying meaning decreased weight gain. It is difficult to quantify, but has been put at a cost of millions of pounds to the UK cattle industry5.


When is worm control required?

All animals that have had a grazing season will require worm control at housing, unless they are still in the persistency period of a previous treatment, animals can be cleaned out with a persistent product prior to housing to give enough time for the immune system to recover to smooth transition. If not, worming must be done at housing as, utilising a wormer post housing has very limited value, worms suppress appetite6, lowering the chances of successful transition to winter diet meaning a growth rate check at housing - Do not compromise on housing worm control.

When is Lice control required?

Lice are always a risk in housing in winter, they are spread by close contact between animals and rubbing on feed barriers and at water troughs, for a successful housing period avoiding handling and multiple costly treatments is essential, choose a product that will fit your system and ideally one with a Lice Free Guarantee – Do not compromise on Lice Control.

What are my treatment options?

Your advisor or vet will be able to give you the best advice of which products to choose, but for your all-important first grazing season beef animals, there is a product that could tick all the boxes, CYDECTIN® TriclaMox® Pour-On, contains moxidectin and triclabendazole in a convenient rain fast pour on formulation. The moxidectin gives 5 weeks cover against lung and stomach worms, aiding in that smooth transition to housing and winter diet. The triclabendazole in the pour-on gives the greatest spectrum of activity against the different maturities of fluke of any pour-on, without the complications of having to drench the cattle. Alongside biting and sucking lice control with a Lice Free Guarantee, Do not compromise on your housing treatment.


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1. Control of Worms Sustainably (COWS)

2. Brunsdon, R. V.; Adam, J. L. 1975. New Zealand Society of Animal Production occasional publication 4: 53

3. Charlier et al 2014: Trends in Parasitology, Vol. 30, No. 7

4. Bennett, R. and Ijpelaar, J. 2005. J Agric Econ 56, 135-144

5. EBLEX Beef Briefing No. 10/09, 05 November 2010.

6.Forbes, AB et al (2004) Veterinary Parasitology 125, 353-364

CYDECTIN TRICLAMOX 5 MG/ML + 200 MG/ML POUR-ON SOLUTION FOR CATTLE contains moxidectin and triclabendazole. POM-VPS For further information please see the product’s SPC or contact Zoetis UK Limited, Walton Oaks, Dorking Road, Tadworth, Surrey KT20 Customer Support: 0845 300 8034. Use medicines responsibly ( Date of preparation: August 2016