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Horses can be affected by several different worms in their intestines, some of which can cause serious and life-threatening disease. Controlling these worms is therefore vital to keep horses healthy. However, over the last few years there has been growing recognition that many of the worms are becoming resistant to many of the current deworming drugs (“wormers” or “anthelmintics”). This problem of resistance to the drugs (“anthelmintic resistance”) is recognized all around the world, including the UK. The purpose of this survey is to gather information about what methods stud farm owners/managers use to control internal parasites in their horses.

Before you complete this survey please ensure you have read 'Project WORMS: stud owner/manager information' on our website:

This survey is anonymous, all the data you provide here will be held by the researchers and used only for the purposes of understanding how stud farm owners/managers currently control worms in their horses. You can stop the questionnaire whilst you are completing it at any time. As the data provided is anonymous, once you have submitted your responses on each page, we have no way of identifying them and removing them from the analysis. At the end of the survey you will be given the option to follow a different link and provide your contact details to enter a prize draw for £100 Love to Shop vouchers.

We’ll keep this data confidential but should you have any queries about how we handle your personal data, please contact Dr Tim Mair ( Tel: 01622 813700).

Thank you

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* 1. Which country is your property located in?

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* 2. What is the average number in a typical year of the following groups at the property? 

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* 3. What is the typical maximum number of broodmares you would have on the property at one time?

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* 4. What is the predominant breed of broodmares that you own/manage?

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* 5. Do you use any worm control strategies for new mares joining the herd e.g. from sales or returning from stud? Mark all that apply

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* 6. If a worming product is given to new mares before turn out, how long are they kept in after worming? Please give details below

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