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Discussion Starter #1
Ok now there seem to be a couple different schools of thought here, so I thought I would get some opinions.

School#1 (old school): Deworm about every 2 months (6-8 weeks), rotate through the different types

School#2 (new school): Deworm only about 2-3 times per year, no dewormer needed from Oct-Feb (in the northern states anyway where we get the deep freezes)

The thought behind this new school of thought is that worms are becoming VERY resistant to what we currnently have and deworming as often as we are doing is making it worse.

How often do YOU deworm your horse?
 

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at my barn we are just starting a program where we do fecal egg counts 2x a year & use dewormer 2-3 times during the year [not in winter though] it was recommended by our vet & pretty much everyone is on board to switch from the old way
 

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school #3- run fecal floations before any dewormer to see if you even need to do it (as Gypsy describes above). This is the most effective. It isn't just a "thought" that there is resistance, it has been proven. Deworming and fecal floats are really cheap so there is no reason to not do it this way! When you get everyone on board as Gypsy mentions, this is especially effective at lowering the parasite burden in the environment as well.
 

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I just jumped off the 4 times a year worm wagon. We're doing fecal counts before treating. We haven't wormed since after the first freeze of winter.
 

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We worm every 3/4/5 months - Whenever I remember, lol. I would like to get fecal counts doen but I don't know where to go near me... I think it also depends on the situation. Our horses are away from other horses, and in big enough pasture that they don't have to graze near feces and it breaks down effectively.
 

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Well at my old barn we wormed our horses whenever, it was up to us. I usually did every other month alternating wormer. Now, however, it's included in our monthly board so they get wormed once a month, and I believe it is alternating.

I seem to like the once a month deal, my horse is in wonderful condition, whereas at my old barn he got worms and was off for a month; but that could have been for a number of different reasons...

Hope this helped you some =]
 

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I do school #1 because my boarding facility requires it. I WANT to do school #2. I'm a big believer in over-doing things and spoiling immunity.
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We deworm every spring, and then if the horses are going to be around other horses a lot in the summer or other people board with us we deworm again. We switch the type each time.
 

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It is not a "thought" that parasites are becoming resistant to the commonly used drugs. There is more than 15 years of research showing growing resistance. Strongyles are resistant to fenbendazole in more than 90% of the areas tested in the US and to pyrantel in about 50% of areas tested. Ascarids have been showing resistance to ivermectin and pyrantel for the last 5 years in certain areas and it's growing.

Please take the time to go to the horse magazine's website and watch the 1 hr presentation on Strategic Deworming that was aired in June of 2009. The newest recommendations on deworming made by experts in equine parasitology were presented: The Horse | Videos: Webinars

I deworm in the spring and fall with an ivermectin/praziquantel or moxidectin/praziquantel and then 0-2 times more during the winter months (that's when our highest reinfection rates are seen) based upon Fecal Egg Counts that I ran to see which of my horses were high, medium or low egg shedders.
 

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Discussion Starter #12
Thanks everyone! My vet has recommended the same some of you have -- fecal egg count to determine it, and then only deworming when it's absolutely necessary. She was actually going to give a seminar at my barn about it but no one signed up...strange, you'd think people would WANT to save $$ and worm less! ;-)
 

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Ok now there seem to be a couple different schools of thought here, so I thought I would get some opinions.

School#1 (old school): Deworm about every 2 months (6-8 weeks), rotate through the different types

School#2 (new school): Deworm only about 2-3 times per year, no dewormer needed from Oct-Feb (in the northern states anyway where we get the deep freezes)

The thought behind this new school of thought is that worms are becoming VERY resistant to what we currnently have and deworming as often as we are doing is making it worse.

How often do YOU deworm your horse?
I guess I was/am ahead of the times! :lol:
Im what I consider old school in the sense, that I have had horses for 30 plus years.......
and NEVER dewormed every 2 months...thought it was over kill. I did/do rotate my dewormers based on what coverage I need/ed for the particular time of year. And always do early spring, summer, and late fall.
I may throw an extra dewomring in their if I think its warranted/

Glad to see my common sense has theory backing it now:wink:
 
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