BLACKLEG

Question 1

what amendment is the second priority dz

Answer 1

DA AO No 17

Question 2

known as clostridial myositis

Answer 2

blackleg

Question 3

agent of true blackleg

Answer 3

Clostridium chauvoei

Question 4

agent of false blackleg

Answer 4

C. septicum and C. novyi

Question 5

false blackleg other accurate term

Answer 5

malignant edema

Question 6

blackleg is a ___borne infection

Answer 6

soil

Question 7

charac of c. chauvoei

Answer 7

g-
spore forming

Question 8

function of spore

Answer 8

survival in envt

Question 9

organs affected in blackleg

Answer 9

spleen, liver, alimentary tract

Question 10

t.f Recovered animals of blackleg are immune to subsequent attacks

Answer 10

t

Question 11

t/f blackleg can be transmitted via open wound

Answer 11

t

Question 12

Presence of infectious agents to the blood

Answer 12

pyrexia

Question 13

endospore deposits in

Answer 13

muscle

Question 14

Endospore deposits in the muscle

__ → activation of spores

Answer 14

Immunosuppression

Question 15

pathogenesis of blackleg

Answer 15

Ingestion
↓
Enters the blood stream
Presence of infectious agents to the blood → pyrexia
↓
Endospore deposits in the muscle
Immunosuppression → activation of spores
↓
Anaerobic condition occurs (bruise)
↓
Sporulation and toxin formation
↓
Myositis & necrosis of muscle

Question 16

blackleg is more common in ___ than in ___

Answer 16

sheep than cattle

Question 17

___ → putrefaction of stomach contents

Answer 17

Absence of motility

Question 18

Usually endogenous infection (no wounds or trauma) but can also have wound infections

Answer 18

cattle

Question 19

in cattle, there is no fever if infection is due to wound

Answer 19

t

Question 20

animal also prone to blackleg

Answer 20

buffaloes

Question 21

diagnostic tech for blackleg

Answer 21

Bacteriology - muscle; impression smear of freshly cut lesion
Place in air-tight container
Histology - fixed samples of suspected muscle lesion
-Necropsy & Cs
-Isolation
fluorescent antibody test (FAT)

Question 22

vaccine for blackleg

Answer 22

polyvalent bacterin

Question 23

The primary source of reinfection of a herd with blackleg is:

Answer 23

Animals dying of blackleg

Question 24

1st choice antibiotic for blackleg

Answer 24

penicillin 4000-8000 IU/kg IM for 4-5 days