P36 - Alimentary Part 5

Question 1

clinical signs of rotavirus infection (5)

Answer 1

• yellowish watery diarrhea
• dehydration
• weakness
• lethargy
• depression

Question 2

histologic lesions of rotavirus infection

Answer 2

• villous atrophy

Question 3

primary cause of diarrhea due to rotavirus infection

Answer 3

• malabsorption/maldigestion

- hypersecretory component

Question 4

which virus has a longer and more severe disease with higher mortality

• rotavirus
• coronavirus
• adenovirus

Answer 4

• coronavirus

Question 5

what is an important coronavirus in swine production

Answer 5

• transmissible gastroenteritis (TGE)

Question 6

3 types of colibacillosis (e.coli) disease

Answer 6

• enterotoxigenic (ETEC)
• enterohemorrhagic (EHEC)
• enteropahtogenic (EPEC)

Question 7

which e. coli is also known as traveler’s diarrhea

Answer 7

• enterotoxigenic (ETEC)

Question 8

pathogenesis of enterotoxigenic (ETEC)

Answer 8

• uses fimbriae to adhere to intestinal mucosa and secrete enterotoxins -> stimulate cAMP and cAMP pathways within enterocytes -> chloride secretion -> diarrhea

Question 9

which e. coli is important zoonotic food-borne pathogen

Answer 9

• enterohemorrhagic (EHEC)

Question 10

what toxin is associated with enterohemorrhagic (EHEC)

Answer 10

• shiga-like toxin (verotoxin)

Question 11

hemorrhagic colitis and blood in diarrhea can be seen with what type of e. coli

Answer 11

• enterohemorrhagic (EHEC)

Question 12

pathogenesis of enteropathogenic (EPEC)

Answer 12

• enterocyte brush border is disrupted by attaching e.coli -> loss of brush border leads to villous atrophy and diarrhea
• alters tight junction

Question 13

which e. coli has dilated and fluid-filled intestines

Answer 13

• enteropathogenic (EPEC)

Question 14

button ulcers in pigs can be seen with what type of salmonellosis infection

Answer 14

• chronic

Question 15

T/F: clostridiosis is a natural inhabitant of soils and intestinal tract and is highly contagious

Answer 15

• false - is a natural inhabitant but it is not contagious

Question 16

which type of clostridium perfringens is associated with pulpy kidney disease in sheep

Answer 16

• type D

Question 17

which type of clostridium perfringens is associated with diet

Answer 17

• type D

- overeating disease

Question 18

which type of clostridium perfringens affect very young animals

Answer 18

• type B
• lamb dysentery
• hemorrhagic enteritis of neonatal calves and foals

Question 19

which type of clostridium perfringens is the most common

Answer 19

• type A

Question 20

which type of clostridium is associated with Tyzzer’s disease

Answer 20

• clostridium piliforme

Question 21

which type of clostridium is associated with blackleg

Answer 21

• clostridium chauvoei

Question 22

which type of clostridium is associated with red water disease

Answer 22

• clostridium hemolyticum

Question 23

lawsoniasis is most common in what species

Answer 23

• pigs

Question 24

pathogenesis of lawsoniasis infection

Answer 24

• organism invades into cryptal enterocytes -> proliferation in crypt epithelial cells and thickening of mucosa

Question 25

clinical signs of lawsoniasis infection

Answer 25

• watery to mucoid diarrhea

- may or may not contain blood, vomiting, anorexia, pyrexia

Question 26

what is associated with Johne’s disease of cattle

Answer 26

• mycobacterium avium