Small Ruminant- Chronic Wasting Disease

Question 1

what are problems with chronic wasting syndrome?

Answer 1

decreased quality of life
shortened lifespan
decreased production
decreased economic potential

Question 2

what causes ovine progressive pneumonia and caprine arthritis encephalitis?

Answer 2

small ruminant lentiviruses

Question 3

when does the arthritic form of ovine progressive pneumonia and caprine arthritis encephalitis set in?

Answer 3

1-2 years old

Question 4

which form of ovine progressive pneumonia and caprine arthritis encephalitis can we manage?

Answer 4

arthritic form

Question 5

what does the mastitic form of ovine progressive pneumonia and caprine arthritis encephalitis look like?

Answer 5

firm udder that appears full, no systemic or classic of mastitis

Question 6

what is the ELISA test for ovine progressive pneumonia and caprine arthritis encephalitis?

Answer 6

small ruminant lentivirus antibody test

Question 7

what causes johne’s disease?

Answer 7

Mycobacterium avium subsp paratuberculosis

Question 8

how does johne’s enter the body?

Answer 8

via ileum

Question 9

what causes caseous lymphadenitis?

Answer 9

Corynebacterium pseudotuberculosis

Question 10

what is the incubation period of caseous lymphadenitis?

Answer 10

3 weeks-6 months

Question 11

what is the definitive way to diagnose caseous lymphadenitis?

Answer 11

bacterial culture

Question 12

when is coccidiosis usually a clinical problem?

Answer 12

in young
1-6 months old, most clinical disease at 4-8 weeks

Question 13

what are subacute clinical signs of coccidiosis?

Answer 13

poor growth
weight loss

Question 14

what is a major risk factor of coccidiosis?

Answer 14

stress: weaning

Question 15

what lentivirus disease is that of goats and which one is that of sheep?

Answer 15

caprine arthritis encephalitis virus: goats
ovine progressive pneumonia virus: sheep

Question 16

what percentage of animals with caprine arthritis encephalitis virus and ovine progressive pneumonia virus develop clinical signs?

Answer 16

20% goats
25-30% sheep

Question 17

what is the encephalitic form of caprine arthritis encephalitis virus and ovine progressive pneumonia virus like?

Answer 17

very rare
ascending paresis leading to paralysis

Question 18

what is the most common manifestation of caprine arthritis encephalitis virus and ovine progressive pneumonia virus in sheep?

Answer 18

pneumonic form

Question 19

how can you diagnose caprine arthritis encephalitis virus and ovine progressive pneumonia virus?

Answer 19

ELISA
AGID
tissue PCR

Question 20

how is johne’s disease transmitted?

Answer 20

fecal oral
advanced: transplacental, milk/colostrum

Question 21

is diarrhea with johne’s in small ruminants common?

Answer 21

not as much as in cattle

Question 22

why is testing of johne’s difficult?

Answer 22

all options have a downside

Question 23

how hardy is Corynebacterium pseudotuberculosis?

Answer 23

very hardy, can survive months to years in environment

Question 24

how is caseous lymphadenitis spread iatrogenically?

Answer 24

shearing
tagging

Question 25

what are the most common lymph nodes affected by caseous lymphadenopathy?

Answer 25

parotid submandibular supramammary

Question 26

is true resolution of caseous lymphadenitis possible?

Answer 26

no

Question 27

what is the vaccine like for caseous lymphadenitis?

Answer 27

sheep only vaccinate infected flocks