"Control of helminth parasites in juvenile horses." Equine veterinary education 29.4 (2017): 225-232. "Are tapeworms associated with equine colic? A case control study." Equine Veterinary Journal 25.3 (1993): 224-226. (2018). Nonstrangulating intestinal infarctions associated with Strongylus vulgaris: Clinical presentation and treatment outcomes of 30 horses (2008–2016). "Parasite faecal egg counts in equine veterinary practice." Equine Veterinary Education (2021) Anthelmintic resistance in equine parasites–detection, potential clinical relevance and implications for control. Then, click on the videos below to better understand. To prevent a time when no medication effectively treats any horse with small strongyles, work with your veterinarian to develop a deworming strategy that considers season and how many worm eggs your horse is shedding in its manure at any given time (fecal egg count ) . Vote for this content: 5 4 3 2 1 Mouse over the various parts of the horse to see which worm could impact that part of your horse. It is important to realize that this worm has been quite good at developing resistance to deworming medications. Chordodes formosanus is a horsehair worm that has the praying mantis as its definitive host. Therefore, a poor-quality haircoat, pot-bellied appearance, poor muscling, diarrhea, and other signs of ill-thrift are signs of high cyathostomin burden. The intestinal wall affected by lots of larval burrowing is less able to digest and absorb nutrients. The horse eats the larvae, which burrow into the horse’s intestinal wall, emerging seasonally to hatch and produce more eggs. Small strongyle eggs are passed in horse manure and hatch on pasture. Horses will only experience disease if the numbers of internal worms are quite high. Amazingly, the entire horsehair worm grew and developed as a parasite inside the body cavity of crickets and other large insects such as grasshoppers, katydids, beetles, and cockroaches. They are found worldwide, and any grazing horse is infected with some amount of these worms. Horsehair worms are very long (4 to 14 inches) and very narrow in diameter (1/25 to 1/16 inch wide). Small strongyles are the most common internal parasite in horses today. Strongyle eggs can be counted under a microscope, called a fecal egg count
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