Internal parasites can affect horses of all ages whether they are stabled or allowed to graze in the pasture. If these parasites are not controlled, horses can lose weight drastically and can develop certain problems, like colic, which can be life-threatening.
Deworming a horse can be confusing. There are several equine dewormers available but how do you know which dewormer to use and when is the perfect time to use it?
Here is a guide on the different equine parasites that pose as significant threats during a specific season of the year, and the dewormers that are recommended to be used to combat the parasites.
NOTE: The months in each season may vary according to the region that you belong to. It is still recommended to consult your veterinarian for the best worming program suitable for your horse as well as the climatic conditions in your area.
Fecal egg counts
Routine fecal exams are necessary; it will give you an idea as to which equine dewormer is best to use.
If the fecal exam results show that your horse is infested with strongyles alone, instead of using broad spectrum products like AbIver, using AbFen, Fenbendazole (double-dose for five days) can target encysted small strongyles and your horse does not need to take other drugs that targets other equine parasites, which your horse does not even have in the first place.
It is important to identify which parasites are present so you will not just give your horse a broad-spectrum agent every time you deworm, just for the sake of targeting everything inside. You not only waste money but you are also allowing the parasites to develop resistance against the drug. Rotating the dewormer ingredients is also recommended to avoid drug resistance.
Designing a program for parasite control can be tedious. No one program is similar to others; they should be unique and designed specifically for the horse and your environment, with consideration on its health, the climate conditions, known resistance of the area, and the severity of the infestation. For this reason, always work closely with your local veterinarian, to formulate the best equine worming program.