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1

(Salmonellosis in Poultry)

 

KNOW THESE NAAMES REALLY WELL

2

(read slide first)

1. Infection commonly persists where?

2. In poultry house, feces of infected chicks contaminate environment, thus spreading infection to other chicks. S. Pullorum can survive in litter for several months.

1. in ovaries (and eggs may be contaminated)

chicks hatched from infected eggs are a source of infections to toerh chicks in hatchery

3

(Salmonella serotype Pullorum)

1. Aka what?

2. infects what?

cause mortality?

3. Symptoms and Lesions?

1. white bacillary diarrhea or Pullorum disease

2. young chicks and turkey poults up to 2-3 weeks of age 

yes... high mortaliity

3. depressed and huddle under heat source

anorexic

whitish fecal pasting around vents

white nodes in lungs

necrotic lesions in liver and spleen

4

5

(Salmonellosis in Poulty)

(Salmonella ser. Gallinarum)

1. aka what?

2. similar cycle of infection from the hen to the chick as in pullorum disease...

what is it?

3. Usually affect growing or adult birds more of young birds?

4. Disease has been eradicated in US

1. fowl typhoid

2. ovaries --> eggs --> chick --> other chicks

(similar symptoms to S. Pullorum in chicks)

3. gworing and adults

(severity of outbreaks vary fom acute with high mortality rates (>50%) to chornic infection

6

(Salmonellosis in Poulty)

(Fowl Typhoid)

1. symptoms?

2. LEsions?

3. Diagnosis?

7

(Non-host adapted Salmonella)

(PAratyphoid)

1. transmission to poultry due to what?

1. contaminated feed (animal by products such as meat and bone meal), hatcheries and environment

egg tranmission from infected breeder flocks to chicks

8

9

10

(Salmonellosis in Cattle)

1. What are the most common causes of Bovine Salmonellosis?

2. Affect what age?

acute or chronic?

 

1. Salmonella serovar dublin, S. Serovar Typhimurium

2. any (calves more susceptible)

either

11

(Salmonellosis in Cattle)

(S. Dublin)

1. host adapted. can infected cattle be carriers?

2. S. Dublin can survive in feces for 2-4 months. PAstures, food, and water may become contaminated from feces of carrier animals or aborted fetuses and fetal membranes.

1. yes (no symptoms) (excrete organism intermittently in the feces)

12

(Salmonellosis in Cattle)

(Salmonella Typhinurium)

1. host adapted?

2. infection of cattle may originate form disease in another animal species... usually occurs in what age?

3. Pathogenesis is similar to infection with S. Dublin... but chronic carriers...?

4. symptoms (calves)?

5. lesions?

1. no

2. 2-6 week old calves

3. over a period of several years does not occur frequently

4. fever, diarrhea with brown or greenish-brown feces... and sometimes blood

5. occasionally arthritis, pneumonia, encephalitis

13

(Salmonellosis in Cattle)

(Salmonella Typhinurium)

1. symptoms (adults)

1. drop in milk production/fever/feces with blood and may contain shreds of mucus membrane. Cow becomes very weak and may die in 1-5 days. Abortion in pregnant cows

(if death does not occur, diarrhea and emaciation may continue until recovery)

14

(Salmonellosis in Cattle)

(Paratyphoid Salmonella in Cattle)

 

15

(Salmoneloosis in pigs)

1. what types?

2. What is the most common in the us and caues necrotic enterities?

3. Incubation period is usually what?

mode of infectoin?

1. S. choleraesuis, S. typhisuis, and non-host adapted types

2. S. choleraesuis

3. several days

ingestion

16

(Salmonellosis in Pigs)

 

17

18

(Salmonella Infection in Horses)

1. In the US the most common serotypes are what?

2. what age is particularly susceptible?

3. What has a major role in intiation of clinical disease?

4. Symptoms?

1. typhimurium, enteritidis, newport, and heidelberg

2. young animals

3. stress

4. fever, colicky pains are frequently the first symptoms followed by diarrhea

19

(Salmonella Infection in Dogs)

 

20

21

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