Sarcocystiosis

Question 1

Causes:

Answer 1

tenella 
rileyi
gracilis 
suihominis (zoonotic)
cruzi (zoonotic)
Sarcosporidiosis

Question 2

Sample and method

Answer 2

Flotation with Bresna soln- sugar, salt, ZnSO4

Question 3

Diagnosis

Answer 3

Flotation- detection of sporocysts/sporulated oocysts in the FH!

Question 4

Position of parasite

Answer 4

Use macrophages!! (v similar life cycle to isospora, but use macrophages)

tenella- esophagus

Question 5

Morph

Answer 5

Large!

Cysts appear long and have a WALL!

Question 6

Name and species

Answer 6

Wild boars- uncooked sausage

Question 7

Host and Vector

Answer 7

FH: car and om- INTESTINAL
IH: mammals and birds- MUSCLE

Question 8

Life cycle and development

Answer 8

Car shed sporocysts with faeces when they eat raw meat

1) endopolygeny- endothel cells
2) endodyogeny- WBC and muscle cells
3) gametogony in final host e.g when human eats sausage
4) sporogony in lumen of gut (sporulated in faeces)

Question 9

Clinical signs

Answer 9

Cattle: Dalmeny disease
Car: no clinical signs, even if heavily infected
White cysts on muscle that may be visible with the naked eye
“Hangover symptoms” vomitting, abd pain, lethargy

Question 10

Patho signs

Answer 10

Cattle: patechiae on organs, white spots (cysts on organs)
Necrotised cysts
Boars: both skeletal and heart muscle

Question 11

Necroscopy findings via meat inspection

Answer 11

tenella/gigantea- esophagus in sheep
hirsuta- cattle
equicans- horse
miescheriana- merozoites inside that look like sand!!

The cystozoites are lunar shaped