Pregnant Mare and Deworming - a few q's. - The Horse Forum
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post #1 of 3 Old 03-17-2008, 12:32 AM Thread Starter
Join Date: Oct 2007
Location: Alberta, Canada
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Pregnant Mare and Deworming - a few q's.

Another deworming question!! My client's horse is preggo, as most of you know. She's in her 10th month right now and the last time she was dewormed was in October, with some (ugh) beef/swine Ivermectin. Edited to add: This ivermectin is supposed to be injected in, I don't know if they did that or just gave it oral.
(This lady doesn't know much about horses, she was too scared to even go catch her horse out of the big field before we moved her in with Maia; the farmer down the road comes in to do shots, farrier work and wormings... I won't let him touch Maia.)

Anyways, I just did Maia's deworming last weekend and I figured I'd offer to do Shadow (my client's horse) so I can just do the two of them on a regular schedule from here on in - but I've never dealt with a pregnant mare and deworming, so:

- Should I deworm her now?
- What brand to use/what brands to stay away from?
- How much?

Thanks in advance.

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JustDressageIt is offline  
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post #2 of 3 Old 03-17-2008, 07:03 AM
Join Date: Sep 2007
Location: SE Kansas
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Sorry JDI I can't remember the names but they will say safe for pregnant mares and foals in the dose instructions.
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post #3 of 3 Old 03-17-2008, 01:32 PM
Join Date: Jul 2007
Location: East Texas
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All of the products currently on the market can be used in pregnante mares. Dose them like any other horse-according to weight. They should be dewormed regularly during pregnancy and should be dewormed with ivermectin 24 hours prior to foaling to help prevent parasitic infection of the foal through the dam's milk.

After foaling it is a good idea to deworm the mare's based upon egg reappearance times for the last drug used as foals tend to pick up and eat their mother's manure. So if you use pyrantel--redose in 4 weeks, 8 weeks after ivermectin and 12 weeks after moxidectin.

Foals should be started on a regular deworming schedule 2-3 weeks after birth with redosing every 4 weeks.

Cindy D.
Licensed Veterinary Technician
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