Poultry GI DZ- Midterm Material (654)

Question 1

Viral causes of poultry enteritis:

Answer 1

rotavirus, reovirus, astrovirus, coronavirus

Question 2

Bacterial causes of poultry enteritis:

Answer 2

clostridium

Question 3

Parasitic causes of poultry enteritis:

Answer 3

coccidia (eimeria), histomonas

Question 4

Rotavirus in poultry (chickens, turkeys, pheasants) primarily affects __ birds

Answer 4

young

Question 5

Clinical signs of rotavirus infection:

Answer 5

diarrhea, depression, anorexia, dehydration

Question 6

Lesions associated with rotaviral enteritis:

Answer 6

dilated intestines with yellow/frothy content, dehydration

Question 7

DX for rotaviral enteritis:

Answer 7

PCR, electron microscopy

Question 8

TX for rotaviral enteritis:

Answer 8

none

Question 9

Reovirus is primarily associated with __ syndrome and viral __

Answer 9

malabsorption, arthritis/tenosynovitis

Question 10

What age of poultry is primarily affected by reovirus?

Answer 10

4-8 week old broilers, peak production layers

Question 11

Clinical signs of reovirus infection:

Answer 11

lameness, swelling of hock tendons, edema, petechiae, cardiomegaly, hepatomegaly, and splenomegaly in young chicks

Question 12

DX for reovirus:

Answer 12

PCR, viral isolation, ELISA

Question 13

Prevention for reovirus:

Answer 13

live and killed vaccines- prevent vertical transmission

Question 14

TX for reovirus:

Answer 14

none

Question 15

Astrovirus in chickens < 7 days old is also called ___, or __ syndrome

Answer 15

avian nephritis virus, white chicks

Question 16

Clinical signs of astrovirus:

Answer 16

embryo/chick mortality, white plumage of hatched chicks, renal damage with urate deposits

Question 17

What is an important DDX for renal damage and urate deposits?

Answer 17

nephropathogenic infectious bronchitis

Question 18

Coronaviral enteritis only affects __

Answer 18

turkeys

Question 19

Clinical signs of coronaviral enteritis:

Answer 19

depression, anorexia, green/brown watery/frothy droppings with mucus

Question 20

The morbidity for coronaviral enteritis is __%

Answer 20

100

Question 21

Necrotic enteritis is caused by ___

Answer 21

clostridium perfringens A and C

Question 22

Necrotic enteritis primarily affects birds ___

Answer 22

reared on litter- broilers (2-5 wk), turkeys (7-12 wk)

Question 23

Necrotic enteritis is associated with high dietary levels of __

Answer 23

animal byproducts- fishmeal, wheat, barley, oats, rye

Question 24

Lesions associated with necrotic enteritis:

Answer 24

ballooned, friable, foul-smelling jejunum and ileum, mucosa with a tan pseudo membrane (turkish towel)

Question 25

DDX for necrotic enteritis:

Answer 25

eimeria brunetti, ulcerative enteritis

Question 26

Ulcerative enteritis is caused by __

Answer 26

Clostridium colinum

Question 27

Ulcerative enteritis primarily affects __, but can affect chickens when they’re stressed

Answer 27

quail raised on dirt

Question 28

Ulcerative enteritis has __% mortality in quail

Answer 28

100

Question 29

Lesions associated with ulcerative enteritis:

Answer 29

yelllow-gray necrosis of the liver, intestinal ulceration, ulcers in the small and large intestines, spleen infarcts

Question 30

DDX for ulcerative enteritis:

Answer 30

necrotic enteritis, coccidiosis, histomoniasis