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  • - Heidi Smith

    Re: [RC] Liquid ivermectin wormer - Heidi Smith


    > Sometime this last spring there was a discussion about using liquid
    > ivermectin wormer.  I did this with my last de-worming (1st of June).
    Paid
    > $95 for 200ml bottle at the feed store (no tax and no shipping charges
    <g>),
    > and for my herd this bottle will last almost 4 wormings per horse.  I was
    > wondereing about how long between times?  Since the liquid wormer is 1%,
    vs.
    > the 1.87% of the horse paste, should I worm more often?  I usually go 6
    > weeks, but I was thinking of trying it at 4 weeks.  Would there be any
    > problem with this?
    
    If you dosed the liquid correctly (1 ml per 110 lbs) you delivered the same
    amount of actual ivermectin with the 1% liquid that you did with the higher
    concentration paste, likewise dosed correctly.  The volume in the directions
    is calculated to deliver the right amount of ivermectin in each case.
    
    Whether you should deworm more often depends entirely on your horse's
    circumstances and potential for reinfestation--which varies according to
    horse density, the horse's past worming history and worm load, and time of
    year.  The more horses per less space, the more potential for
    recontamination.  If a horse does not have a good deworming history, you
    have more potential for an existing worm load and reinfestation.  Spring and
    summer, the worms are more active and you have more potential for
    reinfestation.
    
    Heidi
    
    
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    Replies
    [RC] Liquid ivermectin wormer, Tamara Woodcock