Dr. Porter- Bacterial Dzs (LS) Flashcards Preview

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Flashcards in Dr. Porter- Bacterial Dzs (LS) Deck (25):
1

Why was the National Poultry Improvement Plan (NPIP) established?

What do NPIP do?

(TQ)

  • To control transimssion of Salmonella pullorum
  • Monitors egg-transimtted infections

2

What dz does Salmonella pullorum cause?

2

Pullorum Dz

Bacillary White Diarrhea

3

Which 2 poultry species are relatively resistant to Samonella pullorum?

Ducks

Geese

4

Agents that are monitored for by the NPIP?

  • Salmonella pullorum-gallinarum
  • Mycoplasma gallisepticum
  • M. synoviae
  • M. meleagridis
  • Avian Influenza

5

What is a hallmark of Salmonella P-G infection?

Peak mortality?

  • Yellow-red inflammtory exudate in the cecum → "cecal cores"
  • @ 2-3 wks of age (young birds)

6

Lesions of Salmonella P-G?

  • Sudden death→ granulomatous nodules in heart
  • White foci → heart, liver, cecum, gizzard
  • Cecal cores
  • Septic arthritis
  • dehydration
  • Spelnomegaly
  • Few signs in adults
  • Poor growth

7

If you have Fibronecrotic typhlitis (Cecal cores) what are your 2 top Rule Outs?

Samonella or Coccidial dz.

8

What is used to screen for Samonella P-G?

Is it diganostic?

S. pullorum Plate Agglutination Test

NO!

9

What are done with "Reactor" birds who test (+) for S. pullorum?

Culled

10

How can you distinguish Paratyhpoid Salmonella from Salmonella P-G?

Flagella!

11

Lesions of Paratyphoid salmonella?

4

  • Enteritis
  • Typhlitis (cecum)
  • Yolk sac infection (Omphalitis)
  • Peritonitis

12

Salmonella arizona is an example of what?

How is it spread?

  • paratyphoid Salmonella
  • contaminated egg shells, dirty hatchery, rodents

13

Salmonella arizona is a problem for what sector?

Turkeys

(poults < 3 wks of age)

14

Lesions of Salmonella arizona?

  • Hypopyon→blindness
  • Fibronous peritonitis
  • Suppurative meningitits → neuro signs

15

Which form of Salmonella can be transfered transovarian?

S. enteritidis

16

Which form of Salmonella comes from soiled eggs?

S. typhimurium

17

5 ways birds get Salmonella?

  • contaminated by-products in feed
  • feces of carriers
  • hatchery contamination
  • vectors → mice & wild birds
  • Egg transmission

18

What is the most common bacterical infection in US poultry?

E. coli → Colibacillosis

19

4 E. coli Serotypes of concern?

  • 01
  • 02
  • 035
  • 078

20

What most often predisposes birds to E. coli infections?

Stress!

21

Traid seen in Classical, Acute form of Colibacillosis?

  • Fibronous pericarditis
  • Airsacculitits
  • Perihepatits

22

Which sex has a higher incidence of E. coli Cellulitits?

Male broilers

23

What bacT can cause Salpingitis?

  • E. coli→ Colibacillosis

24

How can you reduce E. coli Cellulitis?

Eliminate

  • crowding
  • piling of birds
  • bright lights
  • poor litter

25

How does Staph. aureus get into a bird?

skin injury/excessive moisture→ Staph penetrates & replicates locally → moves to bloodstream → sepis/bacteremia (liver, spleen, bone, skin)