Parasites in Ruminants: Diagnosis and Treatment

Flies that cause wool strike in sheep by laying eggs in wet or soiled areas, leading to myiasis.

A skin parasite causing intense itching and scabs in cattle, sheep, and horses. (Reportable)

Suction lice species that infest cattle, sheep, and goats, causing skin irritation and itching

Botflies that lay eggs on animals, causing larvae to burrow into the skin and migrate through the body.

A condition in sheep caused by blow flies infestation laying eggs in soiled, damp areas.

Infestation of living tissues by fly larvae.

Various parasites like lice (Linognathus, Solenopotes) and botflies (Hypoderma) can infest cattle.

Parasites like blow flies (Calliphoridae) and the Psoroptes mite, known causes of skin irritation and infection in sheep.

Parasitic worms that infect the abomasum of ruminants, primarily affecting young calves. They cause diarrhea, anemia, and emaciation, giving the abomasal mucosa a "Moroccan leather" appearance on necropsy.

A protozoan parasite that infects the intestines of various animals, including calves, sheep, goats, and horses. Transmitted through oocysts, it can cause diarrhea, particularly in young calves.

A specific species of Cryptosporidium that commonly infects calves younger than 30 days old, causing diarrhea.

A protozoan parasite that causes coccidiosis in cattle, especially young calves. Oocysts are commonly found in diarrheic feces, but their presence doesn't always indicate infection.

A disease caused by Eimeria parasites in cattle, particularly affecting young calves. It results in diarrhea and can be severe in some cases.

A tick that infests the ear canals of cattle. Larvae and nymphs remain on the host for months before dropping to the ground to molt into adults.

A mite that infects cattle ears, causing ulceration, blockage, and ear problems.

A mite that commonly infests cattle, causing mild itching on the tail, legs, and escutcheon.

Small intestinal worms that can cause diarrhea in sheep, goats, and cattle.

A parasitic tick that infects cattle ears, causing irritation and possible long-term issues.

Various mites, including Railletia auris and Chorioptes bovis, can cause ear issues, skin irritation, and impact cattle health.

Internal worms like Trichostrongylus that cause diarrhea in ruminants.

A coccidian parasite that causes diarrhea with bloody stool and tenesmus in cattle; prevalent during winter.

A severe form of coccidiosis caused by Eimeria bovis, affecting up to 1/3 of infected cattle, characterized by neurological signs.

Identification of Eimeria oocysts in feces through fecal flotation.

Drugs like amprolium, monensin, and sulfa drugs are used, often not effective once oocysts are detected.

Using medications like amprolium, decoquinate, lasalocid, and monensin can prevent infection.

A large fluke parasite that lives in the rumen of cattle, sheep, and goats, causing digestive issues.

Metacercariae are ingested and excyst in the small intestine, migrating to the rumen causing prolonged disease.

Diarrhea, depression, and anorexia are common signs of infection.

No labeled treatments are available in the U.S. for Paramphistomum cervi.

Tiny parasitic nematodes living in the small intestine of ruminants, causing diarrhea, nervous signs, and cardiac lesions.

A specific species of Strongyloides that commonly affects ruminants (cattle, sheep, and goats).

Identification of eggs containing rhabditiform larvae in the animal's feces.

Macrocyclic lactones and benzimidazoles are commonly used to treat Strongyloides.

The sheep nasal botfly that lays larvae in the nostrils, causing nasal discharge and sneezing.

A lungworm that lives in the lungs of sheep and goats, usually causing minimal symptoms.