[Apryle & Rayne]

How many times do you deworm? What kind do you use(not brands) like ivermectrin................. And what area do you live in too would help.

[Madick]

The same both in Abq, NM and in Sweden (where I am now): FEC to determin whether deworming is necessary.

IF that is the case, then i use moxidectin in the spring (with praziquantel combo if tapes are present in that farm), summer and fall (12 weeks apart) the first year. Second year pyrantel pamoate every 5 weeks with a double dose in the spring, ivermectin ni October if bots are present.

In the rare cases the horse needs to be dewormed more than 2 years, the third year will be ivermectin.

Both places have "true" winters with no deworming needed. Abq has the upside of dry summer too, and therefor the parasite preassure is very low.

[Heavenly Jumper]

My horses get a daily feed through wormer and worming with Ivermectin in the spring and fall.

I thought I should add that they are pastured on private property and they have their paddock picked of manure often.

[Blistering Winds]

also depends....are you at a boarding barn? Is everyone on the same cycle?

Manuer management practices?



My deworming is on a study until the end of this year....so my practices aren't indicative of the "norm" and many recommendations.

[haunani]

This is the schedule my barn uses:

March - Ivermectin + Praziquantal

May - Fenbendazole

July - Ivermectin

September - Ivermectin + Praziquantal

November - Ivermectin

I need to find out if this it's the same schedule every year or if they rotate yearly. If this is their yearly schedule, I'm not sure I like it as it seems the worms would be able to build up a resistance FAST.

And the funny thing is, they have the Strongid worming calendar hanging up in the tack room, yet they don't even use Strongid in their program! lol

This is a boarding facility with 60+ horses and all are on this program. Manure is removed from the shelters about every 2 weeks or so (more often if the owners do it themselves). About 30 of the horses are in semi-private paddocks (2 horse max per paddock), with the remainder split between 3 pastures.

[Thrills]

I deworm every 3 months, I like to use quest(moxidectin), and once a year I use quest plus(moxidectin and praziquantle).

[Lou3]

Originally Posted by haunani

I need to find out if this it's the same schedule every year or if they rotate yearly. If this is their yearly schedule, I'm not sure I like it as it seems the worms would be able to build up a resistance FAST.

It has been conclusively shown that rotating de-wormers does practically nothing to prevent resistance build-up, resistance simply builds up slightly more slowly to all the drugs rather than quickly to one drug. The end result is still the same.
The best ways to avoid drug resistance in worms remain targetting de-worming, avoidance of underdosing, good pasture management etc. In horses Ivermectin resistance is not a problem so using Ivermectin most of the time is fine as long as the horse is not under-dosed, that allows semi-resistant parasites to survive and perpetuate their genes making the next generation MORE resistant.

[Lou3]

We target de-worm seasonally.
We dont use FECs since the most likely cause of GIP in horses are the cyathostomins, in which case its the larvae which cause the damage and the FEC will be negative even when there are severe clinical signs.

[#1A]

Many adult worms have a 6 week life cycle.
When you de-worm, you target only those worms in the stomach.
If you want your horse to be absolutely worm free 100% of the time, you need to de-worm every 6 weeks, as per the worm life cycle.
Make sure you rotate your wormer, and use one effective for bots during bot season etc.

[Blistering Winds]

Originally Posted by #1A

Many adult worms have a 6 week life cycle.
When you de-worm, you target only those worms in the stomach.

That all depends on the chemical used.

There are some that nail the encysteds (which are in the intestine, and not the stomach) others that CAN kill them outside the GI tract (which is why on a very wormy horse, you still must be careful)

and each worm varies on their life cycle.

They do not have to be in "adult" stages to be killed these days.