Injecting Ivermectin

[Does’ Leap]

I got sticker shock today when buying dewormer for 4 horses. Anyone one have any experience injecting ivermectin or another anthelmintic? It is certainly a lot cheaper than oral paste. Here’s a copy of an abstract I found.

Efficacy of Ivermectin in an injectable formulation against gastrointestinal nematodes of donkeys (Equus asinus). Vet. arhiv 75,369-374, 2005.
ABSTRACT
The efficacy of Ivermectin was evaluated under field conditions at Nyala town, South Darfur State, Sudan. The study involved 16 donkeys. Ivermectin was administered by intramuscular injection at dose of 0.2 mg/kg in the lateral mid- line of the neck. Treatment efficacy was based on the mean faecal egg count reduction 14 days post treatment. A faecal egg count reduction of 100% was found after treatment with Ivermectin. In addition efficacy percentages of Ivermectin against immature and adult nematodes were as follows: Trichostrongylus axei 100%, Parascaris equorum 100%, Oxyuris equi 100%, Triodontophorus sp. 100%, Strongylus sp. 100%, and small strongyles 100%. Two of the control donkeys were infected with Strongylus vulgaris larvae. Ivermectin showed moderate efficacy (69.23%) against larvae found in the mesenteric artery aneurisms. No adverse reactions were observed during the experimental period.

Any thoughts?

George

[cousin jack]

I have used it on horses and I know others who have, with no adverse reactions, however it is not licensed to be used on horses, (not in the UK anyway), so therefore you use it at your own risk!

[CharlyBonifaz]

http://www.ncbi.nlm.nih.gov/pubmed/6548469

had one horse react with terrible phlegmons which took 10 days to recede; microfilaria? allergic reaction?
grave outcomes have been described in foals younger than 4 months and white horses, seems like their hemato-encephalic barrier isn’t as leak-proof as it should be (signs of intoxication will show within 12 hours and are difficult to treat, because ivermectins will be excreted only very slowly – half life of 1 week); also intoxication can cause temporary blindness
very often the place of injection will get sore and inflamed

if there is any money to be saved, why not give injectibles orally? please make sure, the calculated dose is correct!

[Does’ Leap]

Giving injectable ivermectin orally makes a lot more sense. I came up with roughly the same dosage of around 20cc per horse (based on a 91 mcg/lb undiluted ivermectin). A 250 ml bottle of ivermectin is around $48 which equates to 12-15 draft doses (depending on size). This translates to around $3.50 per dose – less than half of what is costs for ivermectin paste.

Bachelor Farmer, we haven’t wormed much either as we rotationally graze our horses in conjunction with our goats. In the summer horses follow goats and are given a fresh paddock every 12-24 hours, so we weren’t too worried about parasites. Our horses are also in good condition with no signs of parasitism. However, when we wormed them for the first time in over a year this fall, we saw an impressive amount of dead larvae in their feces. We are going to go every three months for a year to clean them out and make a plan from there.

Thanks for the input.

[ngcmcn]

I used to be a bit sketchy about worming, maybe every couple of years until i witnessed a friends awesome belgium mare who hadn’t been wormed in years(per the advice of an old-timer) die in two days due to a massive worm load. I worm once a year.

Neal

[gebritt]

A old hunter in this area introduced me to using Ivermec Pour On on our dogs instead of Top Spot, Frontline, etc. to control fleas and ticks. I works great (really better) and saves lots of money. I’ve wondered about pouring it on the horses back as well to controls flies and worms as well. Any thoughts???

[DraftDriver]

I worm every 4 months and have 4 horses to do, two of them Percheron mares so I have to use a tube and a half on each. I would rather be safe, spend a bit more money then wonder or question and potentially harm and/or kill my animal. Better to spend a bit more for wormer than spend money to dig a hole and bury a beloved animal……

[sanhestar]

@gebritt 14467 wrote:

A old hunter in this area introduced me to using Ivermec Pour On on our dogs instead of Top Spot, Frontline, etc. to control fleas and ticks. I works great (really better) and saves lots of money. I’ve wondered about pouring it on the horses back as well to controls flies and worms as well. Any thoughts???

CAVE!

you can use ivermec (in every form) only on dogs that don’t have die MDR1 defect (those who have it, can (!) be: Border Collies, Collies, Australian Shepherds, Shelties, English Shepherd and crosses of that breeds with others). If you use Ivermec on a dog with MDR1 defect, it will die.

Pour ons can cause skin irritations and rashes in combination with sunlight – not sure if you want your horse to have a bloody rash on its back.

[CharlyBonifaz]

about pouring it on the horses back as well to controls flies

the way ivermectin works, it cannot control flies in the sense of keeping them away from your horse…..

[Author]

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