Rise in resistance to our treatments

Our herds are more exposed to parasites as resistance to drugs rises
Our herds are more exposed to parasites as resistance to drugs rises

Peadar Ó Scanaill

FOR many years now we vets have been coming across more and more evidence of resistance in the parasite population to the commonly used worm and fluke doses on Irish farms.

In recent years we have developed in-house laboratory facilities at the veterinary clinics that enable very fast test results on dung sampling for common parasites.

The ease at which faecal samples can be submitted and examined for egg counts has helped greatly in getting a very clear picture on parasitic activity and resistance on individual farms.

We are seeing plenty of evidence of resistance to white drenches (or yellow, ask your vet to go through the different doses with you).

We are now more clearly seeing a growing resistance to some of the avermectin-type products.

The same pattern is occurring with regard to fluke doses and it is accepted worldwide that fewer fluke products remain effective to treat the increasing fluke burdens in both humans and farm animals.

It behoves us all to monitor the parasite levels on our farms and to only use a product when we know we need it and to use it appropriately when we do.

This topic needs a full discussion another day and needs to be constantly on the top of our minds every time we reach up to take that worm drench off the shelf to go dosing our beef cattle.

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