Transitional Bacteria

Question 1

Lumpy Jaw disease pathogen?

Answer 1

Actinomyces bovis

Question 2

Diagnostic characteristic of Actinomyces bovis?

Answer 2

horse-shoe shaped sulfur granules

Question 3

How to look at A. bovis?

Answer 3

wash pus and crush granules between slide and coverslip

Question 4

Trueperella pyogenes

Answer 4

causes an acute form of mastitis with A LOT OF PUS; also heel abscesses in sheep with Fusobacterium

Question 5

Nocardia culture characteristics

Answer 5

star shaped colonies on culture, filamentous cellularly, grows very slowly

Question 6

Nocardia asteroides

Answer 6

principle pathogenic Nocardia species

Question 7

How to distinguish between Actinomyces and Nocardia?

Answer 7

A grows on SAB, Nocardia doesn’t, and Nocardia is often in immunocompromised hosts

Question 8

Grass Awn Migration Disease pathogens

Answer 8

Nocardia and Actinomyces

Question 9

Dermatophilus congolensis cellular characteristics

Answer 9

filamentous with branching at right angles

Question 10

Dermatophilus congolensis distribution

Answer 10

worldwide, often where it has a lot of wet weather

Question 11

Dermatophilus congolensis diseases

Answer 11

Cutaneous stretothricosis in cattle, Lumpy wool in sheep

Question 12

Can reinfection occur with Dermatophilus congolensis?

Answer 12

no, and they can recover spontaneously when dry weather happens