Overview on Deworming Horses
Intestinal worms remain a serious and rapidly changing problem in horses and equines. While once we were concerned about the adult parasites drain on the horse's resources a careful examination of the life cycle reveals that the migrating larvae of the large strongyle was responsible for serious disease. This shifted the focus of parasite control to prevent the horses from being exposed to the infective larvae on the pasture. The advent of better anthelmintic (deworming) products had
all but eliminated this problem where they were used. However recently increasing resistance to both the older and newer dewormers is causing another shift in deworming problems and populations and the problems with parasites continues: recurrent colic, diarrhea, poor doing, pneumonia, and death even in some regularly dewormed horse populations.
This article discusses important evolving concepts of parasite control that get away from the regular use of dewormers that has created the resistance problem. Also briefly discussed are the pros and cons of the various anthelmintics available and links provided to complete articles on these products:
- pyrantel pamoate (Strongid, Strongid C, others)
- ivermectin (Eqvalan, Zimectrin, others)
- moxidectin (Quest, others)
- fenbendazole (Panacur, Panacur Powerpack, Safe-Guard) and other benzimadazole dewormers (Anthelcide, etc...)
- praziquantel (usually in combination with an avermectin: Zimectrin gold, Quest Plus) dewormers.
- Intestinal worms remain a serious problem in horses and equines.
- Changing parasite populations and increased resistance mean many commonly used deworming recommmendations may not be effective and any program will have weaknesses.
- Whatever deworming program is used, proper management and frequent checking for efficacy will greatly increase the efficacy of your program.
~Word Count: 4612 words (The average magazine page contains about 600 words);
~Last Updated: April 17, 2011;
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Discussions on Overview of Deworming
|New combination dewormer||1 ||5 ||Aug 6, 12|
|Deworming||1 ||2 ||Apr 21, 12|
|Changing my deworming program, is it correct?||1 ||2 ||Aug 17, 11|
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|How to deworm shetland ponies||1 ||3 ||Mar 25, 11|
|McMaster Fecal Exam||1 ||6 ||Feb 1, 11|
|De-worming/Feeding Rescue Horse ||1 ||28 ||Jan 15, 11|
|Worming when weight is a ballpark figure||1 ||2 ||Dec 29, 10|
|FEC Home Test Kit||1 ||4 ||Aug 5, 11|
|New horse De-worming||1 ||2 ||Apr 9, 10|
|Fenbendazole dewormer for non pastured horse in Phoenix, AZ||1 ||6 ||Dec 21, 09|
|Research Summary: Increasing Resistance of Roundworms to Ivermectin||1 ||1 ||Mar 19, 09|
|When would be the best time of year for fecals?||1 ||2 ||Feb 2, 09|
|Major Update to Deworming Overview and Schedules Articles||1 ||9 ||Jan 15, 09|
|Netobimin||1 ||3 ||Jan 4, 09|
|Dumb Question About Ivermectin Gold||1 ||3 ||Dec 23, 08|
|Deworming horses who haven't been on a regular schedule||1 ||4 ||Sep 21, 08|
|I need advice about deworming program||1 ||3 ||Jul 1, 08|
|Deworming program||1 ||2 ||Mar 24, 08|
|Research Summary: Monitoring Deworming Programs on Farms||1 ||1 ||Nov 29, 07|
|Major Update to Overview Article||1 ||13 ||May 4, 06|
|Deworming Foals||13 ||79 ||Oct 21, 07|
|Deworming Pregnant Mares||8 ||42 ||Dec 27, 08|
|Side Effects from Dewormers||16 ||79 ||Dec 7, 07|
|Topics Not Covered Above||26 ||143 ||May 24, 13|
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