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31 Cards in this Set

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What are the 3 subcategories of BRDC in calves?
Enzootic calf pneumonia of dairy calves
Shipping fever of feedlot calves
Atypical interstitial pneumonia
What are the long-term effects of enzootic calf pneumonia?
Depressed growth rate
Increased age at 1st calving
Decreased lifetime productivity
What are necropsy findings in enzootic calf pneumonia?
Purulent or exudative bronchopneumonia w/cranioventral distribution
Which viruses are involved in bovine enzootic pneumonia?
BRSV
BHV
PI3
BVDV
Which bacteria are involved in bovine enzootic pneumonia?
P. multocida
M. haemolytica
Mycoplasma bovis (and dispar)
What other diseases does M. bovis cause other than pneumonia?
Mastitis!
Arthritis, otitis, pericarditis
Chronic pneumonia and polyarthritis syndrome
Which of the bacterial causes of bovine enzootic pneumonia are NOT normal flora?
M. haemolytica A1
(P. multocida and M. bovis are normal flora)
How does necropsy of M. bovis pneumonia differ from other bovine pneumonias?
Multinodular caseous necrosis cranioventrally.
What is weird about M. bovis mastitis?
Milk separation
What two organisms operate synergistically in enzootic bovine pneumonia?
M. bovis
M. haemolytica
How is M. bovis treated?
Oxytetracycline
Baytril (single high dose)
Tulathromycin
Tetradure
(Enro/danrofloxacin not labeled)
What is the triad of causative factors leading to enzootic bovine pneumonia?
Calf factors
Etiologic agents
Environmental factors
What are the calf factors in ECP?
Respiratory defenses
Immune status
Nutrition, vitamin/mineral deficiency
Age (premature)
Stress
Concurrent disease
How can you ensure adequate colostral transfer?
TUBE FEED THE SUCKER!
Which environmental factors lead to increased pathogen exposure?
Humidity
Stagnant air
Improper airflow
Overcrowding
What SG is considered good quality colostrum?
>1.050
Which of the following are NOT useful for enzootic calf pneumonia diagnosis?
a) tracheal wash
b) nasal swabs
c) lung C & S
d) pharyngeal swab
b) nasal swabs
What are the 3 principles of antibiotic treatment for ECP?
Treat early
Treat long enough
Treat w/appropriate drug at appropriate time and dose
If giving NSAIDs to a calf with ECP, what would you give and how?
IV banamine (IM is extra-label)
What are some ways to improve management, thereby preventing ECP?
Better housing (clean, better airflow)
Vaccinate dam
Ensure colostral transfer
Remove calf @ birth (hutch)
Disinfect naval
Adequate nutrition
Improve detection
Treat early
Which of the following herd cow vaccinations will help prevent ECP?
a) BRSV
b) M. bovis
c) IBR
d) BVD
e) PI-3
a) BRSV
c) IBR
d) BVD
e) PI-3
(also H. somni or M. haemolytica possibly)
What 4 histologic/physiologic changes characterize bovine interstitial pneumonia?
Interstitial pneumonia
Cungestion and edema
Hyaline membranes
Alveolar epithelial hyperplasia
What are the 2 major syndromes in bovine interstitial pneumonia?
Dietary (fog fever)
Allergic (farmer's lung)
Choose fog fever or farmer's lung...
...single cow usually affected.
farmer's lung (allergic)
Choose fog fever or farmer's lung...
...outbreaks!
fog fever (dietary/toxic)
Choose fog fever or farmer's lung...
...can be chronic.
farmer's lung (allergic)
Choose fog fever or farmer's lung...
...frequently involves housed cattle.
farmer's lung (allergic)
Choose fog fever or farmer's lung...
...low mortality.
farmer's lung (allergic)
Which is true regarding moldy sweet potato toxicity?
a) due to 3-MI toxicity
b) is characterized by a cough
c) most fatalities occur within 2 days of onset of signs
d) rumen microbes convert 4-ipomeanol into 4-IP
b) is characterized by a cough
(3-MI is fog fever; sweet potato toxicity mortality occurs 2-5d after signs; "d" is totally made-up)
Which of the following may have a fever?
a) Fog fever
b) feedlot interstitial pneumonia
c) Perilla Ketona toxicity
d) Hypersensitivity pneumonitis
e) moldy sweet potato toxicity
b) feedlot interstitial pneumonia
d) Hypersensitivity pneumonitis
Which of the following may have a bred predisposition?
a) Fog fever
b) feedlot interstitial pneumonia
c) Perilla Ketona toxicity
d) Hypersensitivity pneumonitis
e) moldy sweet potato toxicity
b) feedlot interstitial pneumonia