Swine Flashcards
What condition is associated with rectal stricture in pigs?
A - Rotavirus B - Intestinal spirochetosis C - Salmonella typhimurium D - Intussusception E - Coccidiosis
C
Salmonella typhimurium is associated with rectal strictures in growing pigs.
Caused by an ulcerative proctitis that damages rectal tissue.
Can see large numbers of cases. Can see sporadic rectal strictures as a sequelae to rectal prolapse.
Follow this link to see a Merck image of rectal prolapse in a sheep.
Intestinal spirochetosis is a post-weaning diarrhea seen in the ABSENCE of Brachyspira (Serpulina) hyodysenteriae (swine dysentery), but similar in presentation to it.
This syndrome is being recognized more frequently worldwide.
Failure to control mild endemic respiratory disease in swine caused by Mycoplasma hyopneumoniae predisposes pigs to complications.
Exudative bronchopneumonia and polyarthritis are most commonly seen in herds infected with both Mycoplasma hyopneumoniae and which other organism?
A - Bordetella bronchiseptica B - Fusobacterium necrophorum C - Hemophilus parasuis D - Pasteurella multocida E - Swine influenza virus
D
Pasteurella multocida infection in conjunction with Mycoplasma hyopneumoniae causes exudative bronchopneumonia, polyarthritis, and chronic lung lesions.
Mycoplasma hyopneumoniae, (also called “Enzootic pneumonia”) is a common, smoldering low-level illness.
Stressors (parasites, other infections, even weather) can result in severe pneumonia. Best managed by decreasing stressors with improved ventilation and decreased overcrowding.
In endemic herds, ABX for sick individuals (ie: lincomycin, tylosin, tiamulin, or a tetracycline) helps control illness, most likely by preventing secondary bacterial infection (like Pasteurella). Bacterin vaccines give good protection, decrease signs (coughing).
Pre-farrowing vaccination of sows decreases colonization in suckling piglets.
An outbreak of diarrheal disease of piglets has occurred which affected the healthiest animals in the herd, 1-2 weeks after weaning.
Some affected piglets had no signs except peracute death. Other affected piglets exhibit diarrhea, ataxia, paralysis, and recumbency.
What condition is at the top of the differential diagnosis list?
A - Clostridium perfringens type C enteritis
B - Hemagglutinating encephalomyelitis virus (HEV)
C - Porcine proliferative enteritis
D - Epidemic transmissible gastroenteritis (TGE)
E - Edema disease
E
Edema disease is caused by Shiga toxin-producing E. coli (STEC). Look for severe acute illness ranging from peracute death with no signs to CNS involvement with ataxia, paralysis, and recumbency in healthiest pigs 1-2 weeks after weaning
Hemagglutinating encephalomyelitis virus (HEV), is almost exclusive to piglets less than 4 weeks old. Two clinical presentations: Vomiting and wasting disease (VWD) and encephalitic.
Clostridium perfringens type C enteritis also called enterotoxemia in other animals is characterized by hemorrhagic diarrhea in 1-3 day old piglets
An aged intact female potbellied pig presents for evaluation of abdominal distension.
A large mass contiguous with the uterine wall is discovered with ultrasound exam of the abdomen.
Which of the following choices is the most likely cause of this finding?
A - Uterine leiomyoma B - Endometritis C - Adenocarcinoma of the cervix D - Lymphosarcoma E - Endometrial hyperplasia
A
These tumors do not typically metastasize so a cure may be achieved by surgical removal of the uterus.
