[Jacob-list] Ivermectin dewormer

[Debbie Bennett]

My vet recommends giving ivomec injectable, orally, at twice the  
dosage per 100 weight for cattle. She has never had me rotate wormers  
and the feed store owner said he had been told that ivomec was  
formulated to interrupt the life cycle or make them unable to  
reproduce (I 'm not too clear on this) so that  resistance should not  
be an issue. Does any one know if that is true?
Debbie Bennett
Feral Fibre Farm
Oakland, Oregon
On Jul 18, 2005, at 10:26 PM, ARTHUR PARTRIDGE wrote:

> --Linda wrote:
>
>> I use ivormectin injectable, given orally. It's the easier to measure
>>
> precisely and I think it comes out cheaper than buying the horse  
> paste.
>
>> That may be because I'm always sticking the horse paste tube in my  
>> pocket
>>
> without a top and forgetting it's there until it all squishes out.
> -------
> I found some interesting information about Ivermectin.  I wrote  
> previously
> that I thought there was an Ivermectin injectable (SQ,  
> subcutaneous) that
> is specific for sheep.  Looks like I was wrong, it isn't approved for
> sheep.  However, many vets recommend that it be given orally.  It also
> might be cheaper than buying the white paste labeled for horses.  One
> comment was that the Ivermectin given as an injectable (shot) takes  
> some
> time to reach effective levels and then lingers at sub-therapeutic  
> levels
> and can bring on resistance to the drug fairly quickly.  Also, another
> comment was that the Ivermectin is needed in the gut to insure a  
> proper
> dose to the worms so giving it orally is better than injecting it.
> Finally, Valbazen drench is half the cost of Ivermectrin drench,  
> but not to
> be used during pregnancy.
> It is best to discuss all this with your vet.
> Cathy Partridge
> Moscow, Idaho
>
>
>
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