Digestive System Diseases Vocab/Questions Flashcards
What are the non-motile types of Salmonella?
S. pullorum and S. gallinarum
What causes pullorum disease?
S. pullorum
What are the signs of pullorum disease?
anorexia
weakness
diarrhea
dehydration
What are the lesions of pullorum disease?
unabsorbed yolk sac
abscess in multiple organs
necrotic tissue
enlarged spleen
septic arthritis
Can birds be carriers of pullorum disease?
YES
How is pullorum disease treated?
no treatment, only control Culling infected birds
Purchasing from NPIP farms
What causes fowl typhoid?
S. gallinarum
What are the signs of fowl typhoid?
Pale skin
dehydrated
greenish diarrhea
What are the lesions of fowl typhoid?
Enlarged/bile stained liver with areas of necrosis
enlarged kidneys & spleen
inflammation w/ necrosis of intestines
What are the common types of motile paratyphoid Salmonella?
S. typhimurium
S. enteriditis
S. heidelberg
What Salmonella spp. has the most significant to public health
Motile paratyphoid salmonella spp.
What methods are used to control paratyphoid?
Strict sanitation
Fumigation of hatching eggs
Use of competitive exclusion products (pro and prebiotics)
What age does paratyphoid affect?
Birds less than a month old with similar signs to Pullorum disease
Types of diarrhea
Osmotic
Inflammatory
Motility
Secretory
(most involve multiple mechanisms)
Is pork a major source of foodborne salmonellosis?
NO
What age group of pigs is commonly affected by salmonellosis?
all ages, more common in weaned/growing pigs
Which bacteria causes the intestinal form of Salmonellosis?
S. typhimurium
Which bacteria causes the septicemic form of Salmonellosis?
S. choleraesuis
Intestinal salmonellosis signs/lesions
Watery diarrhea
Inflammation and necrosis of large and small intestines, enlarged lymphnpnodes
Button ulcers on large intestine if it is chronic
Septicemic salmonellosis signs/lesions
Red/purple skin lesions,
enlarged spleen and liver
depression, anorexia, fever,
How is salmonellosis controlled?
Quarantine new pigs
all in/all out system
Vaccines available
Minimize stress
Which bacteria causes colibacillosis?
E. coli
What age group of pigs is commonly affected by colibacillosis?
1 day old to 2-4 weeks post weaning
What does it mean to be eneterotoxigenic?
bacterial toxins produced in the small intestine that can have local or systemic effects, toxic cells in the digestive system
What are the signs of colibacillosis?
watery diarrhea
vomiting
dehydration
intestines contain water fluid and gas
death
How to control colibacollosis
Improving sanitation/husbandry
All in/all out farrrowing
Vaccinate sows
Treatment with antibiotics is possible
What is dysentery?
Intestinal inflammation, esp. in colon, that can lead to severe diarrhea with mucus or blood in feces
What bacteria causes swine dysentery?
Brachyspira hydodsenteriae
What age does swine dysentery effect?
post-weaning to adults
What are the signs of swine dysentery?
mucohemorrhagic diarrhea, dehydration, anorexia
Lesion of swine dysentery
sever inflammation, edema, necrosis, and thickening of LARGE intestine with NO lesions in small intestine
How to prevent/control swine dysentery
use quarantine of new pigs, all in/all out system
Early weaning of piglets with transfer to clean site and sanitizing facility
What bacteria causes proliferative enteritis
lawsonia intracellularis
What ages are effected by proliferative enteritis?
Post-weaning to adults
Acute vs Chronic form of proliferative enteritis
Acute: hemorrhagic diarrhea, weakness, pallor, death
Chronic: DIarrhea and wasting/stunted growth
What are the lesions of proliferative enteritis
thickening of intestinal lining with proliferation of immature mucosal cells
How is proliferative enteritis treated?
Can be treated with antibiotics, vaccine is available
What virus causes Transmissible Gastroenteritis
coronavirus
Acute vs Chronic form of TGE
Acute: vomiting, profuse diarrhea, high mortality in piglets less than 3 weeks old
Chronic: Similar signs but less mortality
Lesions of TGE
distension of small intestine with foamy fluid
Virus causes villous atrophy
How to treat/control TGE
biosecurity, all in/all out, vaccination
What age does Porcine rotavirus effect?
1-6 week old piglets
What are the signs of porcine rotavirus
Pasty white to yellow diarrhea, occasional vomiting
What are the lesions of porcine rotavirus?
inflammation of intestines with atrophy of villi
What is the treatment/control for porcine rotavirus?
Good sanitation
supportive care for dehydration
Vaccination
and passive transfer for piglets
