ridecamp@endurance.net: Re: An Alternate Strategy For Worms

Re: An Alternate Strategy For Worms

Duncan Fletcher (dfletche@gte.net)
Wed, 27 Aug 1997 20:14:21 -0700

Without good reason, I generally don't want to be the first one on my block
to use any new chemical (read that as food, medicine, etc.), but I would
take a product that has had to jump through all the approvals (read that as
Quest) than one that has not (copper sulfate).

I know nothing about Quest. I would be interested in any information anyone
can post that would indicate what parasites and what stages of those
parasites the drug is effective against. Also what the safety margin is
(perhaps a LD50 number). The most troublesome parasite with traditional
wormers (except for ivermectin) is bots. Other boticides have very narrow
margins of safety. Ivermectin also has its limitations - ineffective
against tapeworms.

Duncan Fletcher
dfletche@gte.net

----------
> From: cameron wood <wood.cameron@acd.net>
> To: Duncan Fletcher <dfletche@gte.net>
> Cc: ridecamp <ridecamp@endurance.net>
> Subject: Re: An Alternate Strategy For Worms
> Date: Tuesday, August 26, 1997 8:46 PM
>
>
> > Ivermectrin has been widely used, and the problems are speculation.
> Jumping
> > to something with no track record at all may have all sorts of unknown
> > risks. For those concerned about overuse of wormer, by all means use
good
> > sanitation and pasture management practices and fecal exams to reduce
the
> > need for worming, but jump to a different wormer with limited history?
> >
> > Duncan Fletcher
> > dfletche@gte.net
> >
>
> There's another class of dewormer on the market, an alternative to the
> avermectins (ie, Ivermectin). Gets everything that Ivermectin does, and
> goes one step further... gets the encysted stages of strongyles too.
It's
> called moxydectin (trade name "Quest") . Available now through
> veterinarians.
>
> The manufacturers recommend using this dewormer (and ONLY this dewormer
> <g>) four times a year .... their studies indicate that it take 12 weeks
> for eggs to appear in fecals after using moxydectin because the encysted
> larvae are not emerging to produce them.
>
> This is a product with a limited history, but I'll try it because of the
> testing that's been done on it (moxydectin has been used in Europe and S.
> America for years with no harmful effects to horses). Sure seems a lot
> safer than using copper at an unspecified dose....
>
> Happy trails,
> Shannon W. LVT

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