Things to do now

Always read the label and ask advice from a vet, vet pharmacist or SQP before deciding which product to use

Things to do now

Always weigh cattle or use a weigh band to calculate the correct dose for each animal

Things to do now

Check meat and milk withdrawal periods for each product before administration

Things to do now

For advice on managing parasite infections in sheep visit www.scops.org.uk

previous arrow
next arrow
Slider

What is COWS?

Control Of Worms Sustainably (COWS) is a voluntary initiative aiming to provide the best available, evidence-based information to the beef and dairy cattle industries in relation to the sustainable control of both internal and external parasites.

COWS funders

As a voluntary initiative, COWS is kindly funded by: AgriSearch, AHDB, AHDA, AHDB Beef & Lamb, AHDB Dairy, AMTRA, HCC, NFU, NOAH and QMS. COWS also works closely with SCOPS.

Latest Press

Beef farmer saves £5,000 by worming his cattle differently

16th October 2025

Round worms in young cattle can reduce growth rates by 30%, reducing herd performance, profitability while increasing environmental footprints. Anthelmintic resistance is a growing concern but can be slowed with responsible medicine use. Ian Farrant, 2023 Beef Farmer of the Year, took part in AHDB’s Monitor Farm programme and changed his worm control to support … Continued

Wormer resistant lungworm

13th October 2025

In recent research on a farm in Scotland, clinical signs and significant numbers of lungworm larvae were found in bovine faeces after treatment with ivermectin and moxidectin. Lead researcher Paul Campbell from the University of Glasgow reports. Parasitic bronchitis is caused by the bovine lungworm Dictyocaulus viviparus. Infections can cause mild to severe respiratory distress, … Continued

COWS and SCOPS welcome BVA’s latest policy and highlight extent of work already done

11th August 2025

 Members of the groups Control of Worms Sustainably (COWS) and Sustainable Control of Parasites in Sheep (SCOPS), welcome the recognition by the British Veterinary Association (BVA) of the need for a cohesive strategy to tackle future parasiticide resistance, with the publication of their new policy on responsible use of parasiticides in grazing animals (July 2025). … Continued

Latest Tweets

COWS Members

  • AgriSearch
  • AHDA
  • AHDB
  • AMTRA
  • Animal and Plant Health Agency
  • Bishopton Veterinary Group
  • British Cattle Veterinary Association
  • Farm First Vets
  • HCC
  • Mark Jelley
  • Moredun
  • NFU
  • NOAH
  • QMS
  • SRUC
  • University of Liverpool
  • Veterinary Medicines Directorate