Swine Flashcards
Porcine Reproductive and Respiratory Syndrome (PRRS) is characterized by postweaning respiratory distress in piglets and reproductive failure in sows. Which is the most effective control measure in infected herds after an outbreak of a new strain of PRRS virus?
A - Cull all sows after first farrowing
B - Maintain therapeutic levels of streptomycin in feed
C - Segregate early weaning 12-18mo after initial event
D - Buy PRRS(-) gilts, test on arrival, segregate 45d, retest before join herd
E - Vaccinate boars in contact with sows, maximize pen ventilation
C - Segregate early weaning 12-18mo after initial event
12-18mo after initial outbreak, sows are no longer transmitting the PRRS virus.
An outbreak of diarrheal disease of piglet 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 ddx 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
Edema disease is caused by Shiga toxin-producing E. coli (STEC), characteristized by by severe acute illness ranging from peracute death with no CS to CNS involvement.
It occurs in the healthiest pigs 1-2 weeks after weaning.
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
These two organisms together cause exudative bronchopneumonia, polyarthritis, and chronic lung lesions
What condition is associated with rectal stricture in pigs?
A. Rotavirus
B. Intestinal spirochetes
C. Salmonella typhimurium
D. Intussusception
E. Coccidiosis
C - Salmonella typhimurium
ulcerative proctitis results in damage to rectal tissue.
may also see rectal stricture as a sequelae to rectal prolapse.
