5 Written Questions
5 Matching Questions
- gastrophilus species
- onchocerca cervicalis
- trichnella spiralis
- ascaris suum
- a travel thru the bloodstream to skeletal muscle where they encyst and are ingested by another host and release into their intestines to mature to adults.
- b bots.
- c often show no clinical signs. Sometimes weight loss, diarrhea, colic or emaciation. Symptoms usually associated with massive migration of encysted larvae into intestinal lumen.
- d neck threadworm.
- e females produce a large number of eggs that are very resistant to environmental conditions. Adults live in small intestines. Penetrate gut and travel thru blood to lungs and enter airways. Coughed up and swallowed into the gut where they become adults.
5 Multiple Choice Questions
- treat with topical powders such as dri kill and louse kill.
- seen mostly in heavy horses with heavily feathered legs. Spend their entire life cycle on the horse. Transmission is by direct contact and sometimes by grooming objects.
- Can interfere with blood supply to gut and cause infarction and death. Likely involved with some types of colic in horses.
- adults live in large intestine. They mate, males die and females move into the rectum. Horses ingest infected larvated eggs.
- a parasite which invades the spinal cord and causes a disease called equine protozoal myeloencephalitis.
5 True/False Questions
equine lice → treat pigs with ivomec.
EPM → causes CNS signs such as ataxia, weakness, stumbling, etc. Has a complex poorly understood life cycle.
chorioptic mange → cause severe pruritis. Infestation of lower limbs can cause foot stamping. Can also infect the tail head region in horses.
cyathostomes → anaplocephala/paranaplocephala
anaplocephala → adults release proglottids in small or large intestine. Ova are passed in the feces and ingested by a free living mite. host ingests mite.