export_bact test 6 Flashcards
(189 cards)
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Fusobacteriumnecrophroum
Usual cause of hepatic abscesses in feedlot cattle
Clostridium perfringens Type A, Clostridiums perfringens type CClostridium difficile
According to the required reading, what are the 3 most common clostridium involved in diarrhea diseases in baby pigs
Porphyromonas, Prevoteilla
2 genera that contain most of the species of Black-pigmented obligately anaerobic bacteria
Clostridium botulinum type C
You are a wildlife vet in oregon. You are studying the cause of death of 1000 ducks in some shallow ponds in a wildlife refuge. The major symptom you saw was a flaccid paralysis w/o recovery in the birds. One bacteria known to cause this type of disease is?
Clostridium tetani
This agent causes a toxin that will cause a generalized rigid spastic paralysis of skeletal muscle in affected dogs
Clostridium haemolyticum
Fever, anemia, hemoglobinuria were observed in 4 cows from a herd of 50 Holstein cows in Wisconsin. Lesions(one cow died) of anemia and a large liver infarct were seen at necropsy. Large gram positive sporeforming rods were isolated from liver on anaerobic culture
Clostridium botulinum Type C
This agent produces a toxin that causes a generalized flaccid paralysis in ducks and other avian species when ingested from environmental sources
Clostridium perfringens Type D
This gram positive obligately anaerobic sporeforming bacteria is the cause of one type of bovine enterotoxemia in feedlot cattle that usually results in sudden death. In the live animal, it is characterized by symptoms of CNS disease
Clostridium novyi
The cause of infectious necrotic hepatitis in cattle
Clostridium piliforme
Animal: 3 wk old foal in MO
Symptoms: Foal died suddenly
Lesions: Multiple foci of hepatic necrosis were seen
Lab: No growth on aerobic blood agar
Histo: Large filamenious bacteria arranged in parallel fashion in hepatocytes were seen on a silver stain of a liver lesion
Clostridium perfringens Type A
Bacteria commonly associated w/ canine hemorrhagic gastroenteritis
Clostridium Perfringens Type C
This agent produces a toxin that causes a necrosis of intestinal epithelium in neonatal foals
Clostridium piliforme
Considered to be the cause of Tyzzer’s disease in mice
Clostridium botulinum Type B
Animal: well-nourished 3 week old foal in KY
Syptoms: Generalized flacid paralysis of major skeletal muscele masses
Foal rfails to respond to stimuli
Lesions: gastric ulcers were observed
Clostridium perfringens type C
Animals: two neonatal calves
Symptoms and lesions> sudden death, small intestine had signs of a necrotic bloody enteritis
Lab: large gram positive rods observed in direct smear
Bacillus anthracis
Animals: Group of 50 yearling cattle in Tx
Symptoms: sudden death in 2 animals
Necropsy: blood didn’t clot, spleen is enlarged
Lab: Large sporeforming gram positive rod grew on primary aerobic culture
Clostridium perfringens Type A
Animal: 3 yr old Beagle in Columbia
Symptoms: Dog is in acute shock and has a bloody diarrhea
Lab: Direct smear of bloody feces, large gram positive rods on majority population
Fusobacteriumnecrophorum
and
Porphyromonas levii
These 2 species of bacteria act as synergistic agents in pathogenesis of acute foot rot
Bacillus anthracis
This agent is the cause of anthrax in hores
Clostridium chauvoei
Animal: Yearling well-nourished steer in Missouri
Symptoms: sudden death
Lesions: Gas bubbles under skin of left hidnd leg, large dry dark area in muscle of the leg
Your diagnosis: Blackleg
Clostridium difficile
This species of gram positive sporeforming rod was originally associated w/ antibiotic induced overgrowth digestive tract disease in humans. Subsequently it was identified as a cause of the same type of disease in lab animals and has recently ibeen identifed as a cause of a severe hemorrhagic necrotizing enterocolitis in neonatal foals
Bacillus anthracis
Clostridium botulinum type A
Two bacteria from 2 different genera that are considered by the CDC to be class A bioterrorism agents
Fusobacteriumnecrophorum
Animals: herd of 200 dairy cows in MO
Symptoms: chronic lameness in about 50 of the cows w/ involvement of 2-4 feet
Lesions: interdigital necrosis and chronic destruction of the bulbs of the feet
Diagnosis?