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Flashcards in Bovine resp Deck (19):
1

name the 4 viruses which contribute to bovine resp infections?

1. RSV - syncitial
2. PIV3 - influenza
3. BHV1 - herpes, IBR
4. BVD - d+

2

which 2 viruses belong to the family paramyxoviridae?

RSV and PIV3

3

what is the pathogenesis of both RSV and PIV3?

attach to cells, nucleocaspids are released to target cells

4

what disease does RSV cause?

interstitial pneum + emphysesm
syncitial cells (m-nuc giant) with eosinphilic inclusion bodies

5

what disease does PIV3 cause?

bronchitis and bronchiolitis
alv cell hyperplasia
giant cells
inclusion bodies @ d5-7

6

what disease does BHV-1 cause?

inf bovine rhinotracheitis @6-18mo
slough cell in URT --> 2ry infection (shipping fever commonly)

7

what causes shipping fever?

mannheimia haemolyticia

8

how many types of BVD are there?

2

9

what is the prevalence on farm of BVD?

60-80%

10

what is the pathogenesis of BVD

destroys alv mphages
depletes lymphoid tissue

11

other than d+ what other signs are their for BVD

repro losses @ 1st trimester
PI/teratogenic effected calf (2nd tri)
NON infected calf (3rd tri)
or mucosal disease = develop the cytopathic biotype! -> mortality ++

12

name the 4 bacteria which contribute towards the BRDC

1. mycobacteria (bovis0
2. pastuerella multocida
3. mannheimia haemolytica
4. histophilus somni

13

what is significant about mycobacteria which effects treatment

no cell wall
gram +
commensals of both URT and LRT
survives in the mphages

14

what disease (other than TB and tubercles) does M bovis cause>

cuffing pneumonia
septic arthritis
otitis media
mastitis

15

what are the family pastuerellaceae?

gram -
facult anaerobes
bacilli/cocci
RTX toxins
fibrinous pleurisy

16

what does mannheimia haemolytica?

shipping fever

17

what does histophilus somni cause?

usually a GI commensal, but dz in resp tract
LPL = inflam + thrombus formation
histamine release
systemic spread of inflam --> heart, pleura, synovium

18

what is the epidem of most resp infections?

close prox
ventilation
immunity reduced
mixed age groups

19

how do you prevetn resp dsease

vaccinate - bovilis IBR and bovilis BVD
reduce stress
inc hygeine
give good colostrum