Lab Exam 1

Question 1

In the staph family, which organism is most likely to be found in wounds on a horse?

Answer 1

Staph pseudointermedius

Question 2

Which organism causes bumblefoot in an avian?

Answer 2

Staph aureus

Question 3

Where can staph aureus and staph pseudointermedius be found on a found? Which is more likely?

Answer 3

Staph pseudointermedius more common!!!!!

Skin infection

Pustular dermatitis

Lick dermatitis

Wound

Ear

Urogenital

Question 4

What are the coagulase positive staphs?

Answer 4

Staph aureus

Staph pseudointermedius

Staph schleiferi (50/50)

Staph hyicus (50/50)

Question 5

What are the VP positive staphs?

Answer 5

Staph aureus

Staph epidermidis

Staph schleiferi

Question 6

Which of the staphs are DZ hemolysis?

Answer 6

Staph aureus

Staph pseudointermedius

Staph schleiferi

Question 7

Which organism is associated with pyoderma in a dog?

Answer 7

Staph schleiferi

Question 8

Which 4 organisms might be associated with otitis externa (an ear infection) in a dog?

Answer 8

1. Staph schleiferi
2. Corynebacterium auriscanis
3. Staph aureus
4. Staph pseudointermedius

Question 9

Which organism causes greasy pig disease?

Answer 9

Staph hyicus

Question 10

What might go along with greasy pig disease?

Answer 10

Septic polyarthritis

Question 11

Which organism is known to cause biofilm build up on intravenous catheters?

Answer 11

Staph epidermidis

Question 12

Which organism is responsible for the majority of goat mastitis cases?

Answer 12

Staph epidermidis

Question 13

Which organism is responsible for the majority of mild to subclinical mastitis cases in cattle?

Answer 13

Staph epidermidis

Question 14

What is the positive control in the CAMP test?

Answer 14

Strep agalactiae

Question 15

What is the negative control in the CAMP test?

Answer 15

Strep pyogenes

Question 16

What are the differences between Strep pyogenes and Strep agalactiae?

Answer 16

1. Strep pyogenes
   
   • Causes necrotizing fasciitis
   • CAMP (-)
2. Strep agalactiae
   
   • Causes mastitis
   • CAMP (+)

Question 17

Which organism causes metritis and cervicitis in sows?

Answer 17

Strep equisimilis

Question 18

Which type of infections can Strep equisimilis cause?

Answer 18

Dog: repro tract infections

Horse: meningitis, repro tract infections, metritis, cervicitis

Sows: meningitis, repro tract infections, metritis, cervicitis

Question 19

What is the cause of STRANGLES in horses?

Answer 19

Strep equi

Question 20

Where is Strep equi normally found in a healthy horse?

Answer 20

Upper respiratory tract

Reproductive tract

Question 21

What does Strep equisimilis cause in horses and pigs? Which other organism has a similar affect on pigs?

Answer 21

Meningitis

Repro tract infections

(Strep suis ALSO causes meningitis in pigs)

Question 22

Which species can Strep equisimilis affect?

Answer 22

Horse

Pig

Dog

Question 23

Which organism causes hemorrhage pneumonia in a dog?

Answer 23

Strep zooepidemicus

Question 24

Which organism would cause a young pig to be DOWN and PADDLING?

Answer 24

Strep suis

Question 25

Which organism could cause a turkey to look "uglier than normal" and have a swollen head?

Answer 25

Erysipelothrix rhusiopathiae

Question 26

What are the results for Erysipelothrix rhusiopathiae below: 1. H2S 2. Dextrose 3. Lactose 4. Sucrose 5. Catalase 6. Urease

Answer 26

1. HS2 + 2. Dextrose + 3. Lactose + 4. Sucrose - 5. Catalase - 6. Urease -

Question 27

What are the results below for Listeria monocytogenes? 1. Dextrose 2. Sucrose 3. Lactose 4. Catalase 5. Urease

Answer 27

1. Dextrose + 2. Sucrose + 3. Lactose + 4. Catalse + 5. Urease -

Question 28

Which organism is positive for casein agar digestion?

Answer 28

Trueperella pyogenes

Question 29

Which organism causes pigeon fever in the horse?

Answer 29

Corynebacterium pseudotuberculosis

Question 30

Which organism causes caseous lymphandenitis in sheep and goats?

Answer 30

Corynebacterium pseudointermedius

Question 31

Which organism causes ulcerative lymphagenitis in the horse?

Answer 31

Corynebacterium pseudotuberculosis

Question 32

Which organisms are definitively (-) for sucrose and lactose fermentation?

Answer 32

1. Corynebacterium auriscanis 2. Rhodococcus equi 3. Corynebacterium renale

Question 33

Which organism is so CAMP (+) that it extends to the opposite side of the staph aureus line?

Answer 33

Rhodococcus equi

Question 34

Which streps are penicillin sensitive?

Answer 34

1. Strep pyogenes 2. Strep agalactiae 3. Strep equi

Question 35

Which streps are alpha hemolytic?

Answer 35

Strep suis Strep dysgalactiae Strep uberis

Question 36

What is the most common pathogen of wounds in horses?

Answer 36

Strep zooepidemicus