# Q&A: Complete guide to controlling worms in your herd - Farmers Weekly

> A Farmers Weekly Q&A from Zoetis vet Dave Armstrong explains how worms such as ostertagia, cooperia, lungworm and liver fluke affect cattle performance. It advises beef and dairy farmers to build a worm control strategy, noting that up to 50% of UK, French and German cattle farms tested showed reduced wormer efficacy.

- Date: 2018-03-18 · published 2018-03-18T12:00:00.000Z
- Category: disease · region UK · magnitude low
- Page: https://feedsoft.ai/events/65942-q-and-a-complete-guide-to-controlling-worms-in-your-herd-farmers-weekly
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

Parasite losses reduce weight gain and milk yields, which can tighten supply at the margin, but the article is animal-health advice with no clear price effect.

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2020-03-28 | [Coronavirus hits already struggling US farmers with drop in prices](https://feedsoft.ai/events/7966-coronavirus-hits-already-struggling-us-farmers-with-drop-in-prices.md) | -2.5% | -14.0% |
| LCATTLE | 2025-11-09 | [Weekly global protein digest: HPAI confirmations continue to rise in US
						 \| The Poultry Site](https://feedsoft.ai/events/22106-weekly-global-protein-digest-hpai-confirmations-continue-to-rise-in-us-the.md) | -1.0% | -0.8% |
| LCATTLE | 2022-10-11 | [When the worms come marching in - Canadian Cattlemen](https://feedsoft.ai/events/39084-when-the-worms-come-marching-in-canadian-cattlemen.md) | +1.4% | +4.8% |
| LCATTLE | 2024-10-24 | [The flesh-eating worms devouring cows](https://feedsoft.ai/events/27811-the-flesh-eating-worms-devouring-cows.md) | +0.9% | -1.1% |
| LCATTLE | 2024-07-14 | [Interview: Everything you need to know about new world screwworm in cattle - Americas](https://feedsoft.ai/events/29213-interview-everything-you-need-to-know-about-new-world-screwworm-in-cattle.md) | -0.5% | -0.2% |
| FCATTLE | 2025-11-09 | [Weekly global protein digest: HPAI confirmations continue to rise in US
						 \| The Poultry Site](https://feedsoft.ai/events/22106-weekly-global-protein-digest-hpai-confirmations-continue-to-rise-in-us-the.md) | +3.8% | +2.8% |
| FCATTLE | 2022-10-11 | [When the worms come marching in - Canadian Cattlemen](https://feedsoft.ai/events/39084-when-the-worms-come-marching-in-canadian-cattlemen.md) | +1.5% | +3.6% |
| FCATTLE | 2024-07-14 | [Interview: Everything you need to know about new world screwworm in cattle - Americas](https://feedsoft.ai/events/29213-interview-everything-you-need-to-know-about-new-world-screwworm-in-cattle.md) | -1.2% | -4.7% |

## Sources

- fwi.co.uk: https://www.fwi.co.uk/livestock/qa-complete-guide-controlling-worms-herd

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.