1. OABP Conference 2008 Interactive Disease Investigations

2. This is how calves are moved from the calving pasture
to the turnout pasture on this large ranch in Alberta.
The calf is less than 24 hours old.

3. How does the heifer know it is her calf?
Sight and smell
Sight and sound
Location and sight
Smell and sound
Smell and location 2

4. What is the pathogen?

5. The pneumonia pictured in the previous slide
Is a common cause of death in yearling cattle in the feedlot
Only seen in feedlots which have greater than 10,000 head
Can be effectively controlled by vaccination with a killed bacterin
Has been associated with an acute Bovine viral diarrhea virus infection.
Is easily treated with florfenicol or other broad spectrum antibiotics.

6. This yearling feedlot heifer was pulled by the treatment crew today.
She has been on feed for 200 days and has not been previously treated.

7. The most likely diagnosis is:
Lungworm
Undifferentiated BRD
H. somni myocarditis
Feedlot interstitial pneumonia
Calf diptheria

8. This calf was born about 24 hours ago to a first calf heifer.
The producer used a calving jack to extract the calf.
The calf is now breathing rapidly and the producer
believes it has respiratory disease.

9. Which of the following diagnoses is the least likely?
Enzootic pneumonia
Fractured ribs
Aspiration pneumonia
Metabolic Acidosis

10. A mature dairy cow dies of pneumonia and these are
the lung lesions at necropsy

11. The most likely diagnosis is:
Honker syndrome
Post venal caval thrombosis syndrome
Histophilus somni pneumonia
Mycoplasma bovis pneumonia
BRSV pneumonia
:04

12. It’s fall on a large ranch located
in the interior of British Columbia.
The cows have just been brought
off the mountains down to the valley.

14. This cow has: 9 Fog Fever or Atypical Interstitial Pneumonia
Shipping Fever
Honker’s syndrome
Infectious Bovine Rhinotracheitis
Lost her calf

15. A feedlot calf who has been on feed for 56 days
dies suddenly in the pen.
It has never been treated before.

16. The most likely diagnosis is:
Mycoplasma bovis pneumonia
Mannheimia hemolytica pneumonia
BRSV pneumonia
Mycoplasma bovis pleuritis
Histophilus somnus pleuritis 9

17. in by the treatment crew.
A yearling feedlot
animal is brought
in by the treatment crew.

18. This yearling has: Shipping fever Histophilus myocarditis
Rt. Sided heart failure
IBR
BRSV 10

19. This calf was born with a mass protruding from it’s skull
It is able to stand and has normal behaviour.

20. What is your diagnosis? Tumour Tissue protruding from anterior sinus
Meningocoele

21. Does the Bull see the colour red?
Yes No

22. Team Scores
541.67
Boehringer Customer
475
Boehringer Employee

25. What weed caused this problem?
Fanweed
Stinkweed
Lupins
Marsh arrow grass
Poison hemlock 10

26. Sudden death on Canola stubble
Shortly after being turned out on a field of Canola stubble
Cows become recumbent
Excessive salivation, dilated pupils
Diarrhea
Bloat

28. Most likely diagnosis? Organophosphate toxicity Nitrate toxicity
Lead toxicity
Prussic acid poisoning
Urea toxicity 10

29. Abnormal calves at birth
30% of the calf crop of this commercial herd in Alberta are affected
Calves appear to have skeletal abnormalities
Calves are smaller than normal and have joint laxity
Many affected calves fail to survive

31. This problem is caused by a:8
This problem is caused by a:
1,25 dihydroxy-vitamin D deficiency
Zinc deficiency
Manganese deficiency
Mycotoxin
Moldy straw

32. Colic in Adult Cows 500 cow herd in early December
Recently began feeding from 2007 alfalfa silage pile
This silage has a significant amount of spoilage
Also feeding barley, canola and pea straw
Barley straw is 4 yrs old and very moldy
30-50 cows affected with clinical signs
Dull, off feed, kicking at bellies, hunched backs, walking slowly, 7 cows are down, 2 have diarrhea, 1 death

34. The most likely cause of this problem is:9
The most likely cause of this problem is:
Mycotoxins in silage
Inadequate protein/energy
Inadequate calcium in ration
Foreign material impaction
Inadequate phosphorus

35. Sudden death post-weaning
250 cow herd which weans in December
1 week after weaning, 12 calves die within a 4 day period
Some of the calves have severe diarrhea prior to death
Oral and esophageal ulcerations are evident

37. This outbreak could have been prevented by:
Using BVD MLV at branding in calves
Using BVD MLV at weaning in calves
Using BVD MLV prebreeding in cows
Using Killed BVD vaccine at pregnancy diagnosis in cows 9

39. What could have prevented this problem?
Better penriders
Metaphylaxis
BVD vaccine
Clostridial vaccine
Anthrax vaccine 10

40. Feedlot cattle with poor gains
2000 head backgrounding feedlot
Cattle arrive in October at 600 lbs
Owner notices poor feed consumption, low weight gains, excessive salivation
Approximately 80% of feedlot is affected
Do not respond to antibiotic treatments
Oral lesions are evident in cases

42. What is the most likely diagnosis?
Acute BVD
Foot and mouth disease
Foxtail awn stomatitis
Malignant catarrhal fever
Mycotoxins 4

43. Cow herd with oral lesions
Slobbering, smacking lips
Oral ulcers
Shivering
Sore feet
High temperature

45. What is your diagnosis? BVD Foot and mouth disease
Foreign body stomatitis
IBR
Papular stomatitis
:10

46. Calves with hair loss
3 calves in herd of 150 with significant hair loss
All treated with endectocide one month previously
No response to treatment

48. What is your diagnosis 10 Chorioptic Mange Psoroptic Mange
Genetic problem
Biting Lice
Sucking Lice 10

49. 80% of calves in this feedlot pen have
conjunctivitis in December
There has been no response to treatment
What is your diagnosis?

50. What is the pathogen? Mycoplasma conjunctivitis
Moraxella bovis conjunctivitis
Neisseria conjunctivitis
Chlamydia conjunctivitis
IBR conjunctivitis 10

51. 5 cows found dead suddenly all
within 25 yards of this lick tank

52. What is your diagnosis? Anthrax Lightning Blackleg Urea toxicity
Lead toxicity 6

53. Which came from the chronic pen?

57. Which of the previous lesions came from the chronic pen?
Lesion A
Lesion B
Lesion C 5