Vet Microbiology Staph Flashcards
Staphylococcus are gram what?
They are gram positive
______ give grape like irregular clusters
Staphylococcus
What is the selective media for staphylococcus
Mannitol salt agar
Staphylococcus aureus are _____ fermenter
Mannitol
Staphylococcus saprophyticus are - - - - - fermenters
Non mannitol
On macConkey medium staph is What color? They are __
Pinkish, they are non lactose fermenters
On macConkey medium staph is What color? They are __
Pinkish, they are non lactose fermenters
HHCCLA explain this extracellular products of medical importance in staph
Heat stable nuclease
Haemolysin
Catalase
Coagulase
Leucocidin
Adhesins.
HHCCLA explain this extracellular products of medical importance in staph
Heat stable nuclease
Haemolysin
Catalase
Coagulase
Leucocidin
Adhesins.
What is peculiar about Catalase
It is produced by staph instead of streptococcus, it breaks down h202 to water and oxygen
Is Catalase produced by streptococcus
No it’s in staphylococcus and it breaks down h202
What’s the role of Coagulase in preventing infection
It coats the surface of the organism with fibrin thereby preventing phagocytosis
Staphylococcus and strept cause what in cattle
Mastitis
In poultry it causes
Dermatitis also know as bumble foot, bacteramia, osteomyelitis, arthritis or synoviitis
What are the samples used to test staph
Aspirate from absess, blood, nasal swab, affected tissues or milk
What are the samples used to test staph
Aspirate from absess, blood, nasal swab, affected tissues or milk
Gram stain of the specimen
Gram + with cocci in pairs, single or chain
Staph can also grow in ___. Agar to give different colored colonies
Blood agar
Staph can also grow in ___. Agar to give different colored colonies
Blood agar
There may be __ haemolysis on blood agar
Beta - complete haemolysis
There may be __ haemolysis on blood agar
Beta - complete haemolysis
What does color mannitol fermenters give ___ and non give
Non give my favorite color purple…
Fermenters give yellowish
What does color mannitol fermenters give ___ and non give
Non give my favorite color purple…
Fermenters give yellowish
On macConkey staph are __ fermenter with which color
Lactose, pink
On macConkey staph are __ fermenter with which color
Lactose, pink
Baird Parker medium gives which color of colonies
Shiny black colonies
Which strain of staphylococcus produce Coagulase.. List 3
S.aureus,S,intermedius, S. hycicus
The Catalase test differentiate staph from strept which are Catalase +
True
Name a disease staph produce in cattle, broiler, pig and dog
Cattle : mastitis
Broiler, dermatitis (bumble foot), arthritis, osteomyelitis, lameness due to staph is of high economic importance
Pig Exudative epidermitis( greasy pig disease)
Dog pyoderma
