Larval cyathostomosis is usually diagnosed via clinical signs and environmental history.Ĭontrol and Management: Small strongyles are highly prevalent – these worms require ongoing management. Unfortunately no diagnostic is available for encysted larvae. Heavy burdens can lead to ill-thrift, poor condition and sometimes diarrhoea.ĭiagnosis: Small strongyles can easily be diagnosed via FEC. This is known as larval cyathostomosis.Ĭlinical signs: Most adult horses carry small strongyle burdens without any obvious signs of ill health. Mass emergences of L4 larvae can occur, which leads to either acute or chronic inflammatory disease that can resemble colic. Occasionally larvae will encyst in the intestine wall at 元 stage. Adult worms feed on the mucosa of the intestine wall. The 元 larvae then invade the wall of the ileum and large intestine before developing into L4 larvae, which leave the intestinal wall and become adults in the gut lumen. ![]() This can take as little as two weeks during warm, damp weather, however larvae can survive on pasture for up to 6 months. These eggs hatch into larvae on the pasture, where they develop through larval stages to become infective larvae (元). Adult worms reside in the large intestine and produce eggs that pass out in the manure. Lifecycle: Small strongyles have a direct lifecycle. ![]() Small strongyles make up over 95% of all horse worm infections All these species of small strongyles are very similar in morphology, behaviour and lifecycle so are treated as a general group of parasites when diagnosing, treating and managing infection. ![]() This group of worms encompasses over 40 different species, with 15 species being most commonly found in horses. Synonyms: trichonemes, cyathostomes, cyathostomins, Trichonema spp., Cyathostomum spp., Culicocyclus spp., Cylicodontophorus spp., Cylicostephanus spp.
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