RLG Flashcards
The most widely employed
technique for the detection of
parasites in the gastrointestinal
tract.
fecalysis
fecal score: majority is formed but has poor consistency and viscous
G4
fecal score: moist, leaves definite mark
G3
fecal score: bullet like, crumbly
G1
fecal score: does not hold form, and spreads lightly
1/3 -soft
Factors that may affect fecal examination
- Amount of feces examined
- Age of the sample
- Sample handling (including
collection, storage, and transport) - Examination method
- Skill of the diagnostician
If the fecal material cannot be
examined immediately, preserve it in:
5-10% formalin
refrigerate 3-5C
qualitative fecal exa methods
- Direct/ simple smear
- Flotation
- Sedimentation
- Larval recovery
quantitative fecal exam methods
- Stoll-ova counting technique
- McMaster egg-counting
technique - Beaver’s direct egg-counting
technique
Useful also for pseudotapeworms,
acanthocephalan eggs, lungworm
and Strongyloides larva, amoeba,
and ciliates.
sedimentation
Useful for isolation and
identification of ovoviviparus
nematodes and strongyles.
larval recovery
types of fecal flotation
passive and centrifugation
flotation
quantitative methods can reflect parasite burden and degree of infection
F
used for dx of abomasal or stomach damage due to trichostrongyles
plasma pepsinogen test
vector borne pathogens of cattle
babesia
theileria
elaeophora
setaria
trypanosoma
anaplasma
Techniques for the detection of vector-borne
pathogens
- Blood smear examination
- Serological assays
- Molecular assays