Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
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
|