Daft (?) wormer question..

PapaFrita

PapaFrita

Well-Known Member
Joined
25 August 2005
Messages
25,923
Location
Argggggentina at the moment
pilar-larcade.com
Do all wormers actually kill the little basstads, or do they just expel them feeling a bit poorly, or does it depend on the ingredient in the wormer, or even the stage at which the worms are at or the particular worms? I should google, but have had a caipiroska (it was delicious) and am a bit fuzzy.
 
When my loan horse had tapeworm the double strongid (or whatever it was we gave him, twas a long time ago!) killed them internally. I know because his droppings the next day were full of segmented tapeworm corpses... Don't know about any other wormers though
smile.gif
 
different wormers kill different types of worms you have to worm at the right time of year with the right product to kill the buggers off!
 
[ QUOTE ]
different wormers kill different types of worms you have to worm at the right time of year with the right product to kill the buggers off!

[/ QUOTE ]
Yes, I know that
smile.gif
But some worms/eggs must get through alive or we wouldn't be told to keep horses in after worming to prevent reinfection.
 
The reason we are told to keep the horses in is not because of re-infection...... more to do with the fact that they are not altogether sure what the active ingredients will do to the flora and fauna of the field.
 
wink.gif
Then you wont have to worry and can deffo turn out!!

Merlin gets stiff when in and it was a pain in the neck when we had to keep in for three days at the old yard..... especially when that would be followed by another three days in coz it as raining and another day coz there was y in the day!!!!

He is out all the time now and I was worried about the same thing so I rang the manufacturers...... so its straight from the horses mouth!!
 
yup, extensive research done on cowpats at uni on the ecological significance of worming cattle. Basically kills creepy crawlies so poo degrades slower and cow pats stay there longer BUT this effect continues for a sig amount of time after worming (I think this project was to do with moxidectin (12 weeks) or boluses can't remember so if you regularly worm your horses this will always be the case.

Hence there is absolutely no reason to keep your horse in after worming all the buggers will be dead

and it is better NOT to turn out on clean pasture because then if there is any drug resistance in the population that clean pasture will then have 100% resistant worms on it which will give you a real problem. It is much better to keep the population of worms mixed in order to prevent increasing resistance to anthelmintics.
 
Benzimidazole wormers kill parasites by disabling their ability to feed. Pyrantel and ivermectin/ moxidectin womers kill by paralysis. As far as I know, the exact mechanisms of these are poorly understood. The slower action of benzimidazoles is, I think, one of the main reasons that there are much higher levels of resistance to them, that and the fact that for many years they have been the cheapest on the market.
Keeping the horse in after worming is to make sure it dumps it's worm burden away from the field - although the worms themselves are killed, there will still be viable eggs after worming.
As ester says, the practice of turning out onto clean pasture is no longer recommended. After worming, only resistant adults will remain and so turnout onto clean pasture will mean that there is no competition from non-resistant worms that the horse is reinfected with if on 'dirty' pasture, so the population of resistant worms will grow unchecked. The non-resistant population on pasture are 'in refugia' which is a term that is starting to come up in worming literature. This also means that keeping the horse in after it's been dosed is unneccessary.
It's highly probable that all wormers have a detrimental effect on other pasture invertebrates (the ones that maintain the soil etc), giving another very good reason to cut down on the use of chemical wormers.
 
It's as good as being at school. I learn so much interesting stuff on here - thanks everybody for taking the trouble to set it out so clearly. : smile:
 
I got a bit of splash back from my horses wormer the other day. dont ask how. landed on my bottom lip luckily it didnt go in my mouth but a minute after it happened the side of my face went numb. it was like being at the dentist. can understand why some of them dont like it.
 
[ QUOTE ]
I got a bit of splash back from my horses wormer the other day. dont ask how. landed on my bottom lip luckily it didnt go in my mouth but a minute after it happened the side of my face went numb. it was like being at the dentist. can understand why some of them dont like it.

[/ QUOTE ]
Eeeek, sounds nasty! Out of interest, which wormer was it?
smile.gif
 
You must log in or register to reply here.
Top