Dr. Porter- Bacterial Dzs (LS)

Question 1

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

What do NPIP do?

(TQ)

Answer 1

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

Question 2

What dz does Salmonella pullorum cause?

2

Answer 2

Pullorum Dz

Bacillary White Diarrhea

Question 3

Which 2 poultry species are relatively resistant to Samonella pullorum?

Answer 3

Ducks

Geese

Question 4

Agents that are monitored for by the NPIP?

Answer 4

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

Question 5

What is a hallmark of Salmonella P-G infection?

Peak mortality?

Answer 5

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

Question 6

Lesions of Salmonella P-G?

Answer 6

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

Question 7

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

Answer 7

Samonella or Coccidial dz.

Question 8

What is used to screen for Samonella P-G?

Is it diganostic?

Answer 8

S. pullorum Plate Agglutination Test

NO!

Question 9

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

Answer 9

Culled

Question 10

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

Answer 10

Flagella!

Question 11

Lesions of Paratyphoid salmonella?

4

Answer 11

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

Question 12

Salmonella arizona is an example of what?

How is it spread?

Answer 12

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

Question 13

Salmonella arizona is a problem for what sector?

Answer 13

Turkeys

(poults < 3 wks of age)

Question 14

Lesions of Salmonella arizona?

Answer 14

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

Question 15

Which form of Salmonella can be transfered transovarian?

Answer 15

S. enteritidis

Question 16

Which form of Salmonella comes from soiled eggs?

Answer 16

S. typhimurium

Question 17

5 ways birds get Salmonella?

Answer 17

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

Question 18

What is the most common bacterical infection in US poultry?

Answer 18

E. coli → Colibacillosis

Question 19

4 E. coli Serotypes of concern?

Answer 19

• 01
• 02
• 035
• 078

Question 20

What most often predisposes birds to E. coli infections?

Answer 20

Stress!

Question 21

Traid seen in Classical, Acute form of Colibacillosis?

Answer 21

• Fibronous pericarditis
• Airsacculitits
• Perihepatits

Question 22

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

Answer 22

Male broilers

Question 23

What bacT can cause Salpingitis?

Answer 23

• E. coli→ Colibacillosis

Question 24

How can you reduce E. coli Cellulitis?

Answer 24

Eliminate

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

Question 25

How does Staph. aureus get into a bird?

Answer 25

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