Intestinal worm resistance in donkeys

May 2005

It has recently come to our attention that despite regular worming and the rotation of different types of wormer, some intestinal worms are still resistant. This has led to three donkeys at Shelter becoming gravely ill and requiring treatment at the equine hospital in Werribee. With the help of the staff at the hospital we have now put together a suggested regime of treatment.

First Worming
This should be done with Equest only. Be aware that this may lead to spasmodic colic, which is caused by the eradication of worms. It is a painful condition that causes the donkeys to be miserable. They often bite at their flanks, or kick out due to the pain. This may go on for a few days. A vet will need to be contacted to verify the diagnosis and institute treatment.

After two to three days all manure should be removed from the paddock to prevent cross-contamination.

As colic reflects a large worm burden, it is recommended that worming with Equest be done two weeks later and then six weeks after that.

Second Worming
For the next worming either an ivermectin or oxydiazole preparation should be used.

Third Worming
The third worming for the year should again be done with Equest. There should be no colic this time but if the donkey becomes distressed then a vet should be contacted.

Fourth Worming
The fourth worming for the year should be with the alternative treatment suggested at the second worming.

For worming in the summer months it is recommended that a wormer containing a boticide preparation be used