devastated by worms

OP I am so sorry for your loss :(

I started worm counts a year or so ago and will never use them again!! My boy got worms after getting consistent clear results and following the program with regards to worming etc. and I felt awful, poor chap lost weight and was really under the weather.
 
OP so sorry for your loss but it can happen its seems rather easily, i have 2 4 years old who when they were 2 suddenly had a load of redworm come out when i wormed them, even tho they had been wormed regularly and the field poo picked every day, I was completly shocked. Since then i have been rigourous and seen nothing since until Today when poo picking one of the horses droppings had pinworm in, where did that come from ??? Only one of 3 horses that I own has it although all have been kept together and wormed regularly and field poo picked every day, I am at a loss to know where this has come from any one any ideas
 
I've had trouble with 1 or 2 of my yearlings this time of year and find it terribly heartbreaking to see them going downhill when you have them on a regular worming programme wich seems effective on the rest of the herd, but not certain ones who are resisting the wormers for some apparent reasons!
I've had test done which don't show they have worms but yet they go downhill with weightloss drasticaly within the space of a week.
It must be the small red worms causing the problems, so my plan is to change the wormer from the Ivermectin base which I usually use to a Moxidectin base worming, which I believe looking up on the web, is more effective for Redworms. Is this true?
Has anyone else had similar troubles like this?
 
I hope this might make some sense (advice I give to horse owners);

1. Approx. 20% of adult horses have high(er) worm burdens. 80% cope quite well (immunity is really important - hence immunocompromised animals - pregnant and early lactating mares / other illnesses and young animals i.e. < 2 years carry more worms and are at greater risks).
2. poo-picking removes most of the risk - 2 - 3 times a week during summer and once a week during winter for worm control. It is probably the most effective tool for controlling worms in horses.
3. Foals in their first year grazing season should be routinely wormed.
4. Winter worming to remove encysted small redworm (which make up to 95% of the worms in adult horses) is very important in animals up to 6 years of age and immunocompromised animals (and probably in older animals) probably Moxidectin is the only chemical that we know still has a good efficacy.
5. Tapeworm treatment should be done once a year towards the backend of the year (some places may have to do in spring as well - ask your vet). Foals shouldn't be wormed for tapeworm until the end of their first year grazing).
6. faecal egg counts are an indicator of worm burdens (not tapeworm) over the summer grazing season.
7. really important you know the weight of the animal to get the correct dose (weigh tapes / weigh bridges etc.)
 
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