Diagnosis Of Respiratory Disease Flashcards Preview

Farm Animal Respiratory Disease > Diagnosis Of Respiratory Disease > Flashcards

Flashcards in Diagnosis Of Respiratory Disease Deck (13):
1

What respiratory disease are commonly seen in fattening cattle?

Shipping fever
Mannheimia haemolytica, Pasteurella multicoda, Histophilus somni

2

What lung disease is frequently seen in the late summer / Autumn in 1st lactation heifers in the 1st grazing season?

Dictyocaulus viviparous

3

What causative agents are usually responsible for calf pneumonia?

Viruses, bacteria, fungi, mycoplasma, environment

4

What respiratory diseases are seen in cattle over 5yo?

Vena canal thrombosis - epistaxis
Secondary infections due to viral challenge
- chronic suppurative pneumonia
- diffuse fibrosing alveolitis
Shipping fever

5

What might you expect as the cause of URT in a beef cow?

Laryngeal chondritis
Secondary to calf diphtheria - fusobacterium necrophorum

Tx: penicillin, NSAIDs, tracheostomy

6

How should you examine a group of animals with respiratory disease?

Observe - demeanour, behaviour, ear position, discharges from eyes or nose, respiratory effort eg: abduction of elbows, shallow breaths indicate pain due to pleuritic / peritonitis

Move to elicit coughing
TPR
Auscultation of lungs, trachea and larynx

7

How would you approach diagnostic sampling in an outbreak of respiratory disease?

Sample acute cases
Remember that Pasteurella and Mannheimia are commensual
Use the right transport medium - eg virus

8

What can a nasopharyngeal swab be used to diagnose?

IBR, RSV, PI3

9

What can conjunctival swabs/scrapes be used to diagnose?

IBR

10

What makes a sample positive on serology?

Titre raised by 4x in paired samples taken 2-3 weeks apart

11

What can be used to monitor respiratory disease in dairy herds?

Bulk milk antibody testing

12

What things should you assess when investigating the environment?

Smell of urea
Dust
Wet bedding
Temperature of the air and bedding
Inlets and outlets
Tiger stripes and cobwebs
Body mass in relation to the size of the building

13

What tests can you perform to evaluate ventilation in housing?

Smoke bomb
Pneumonia score calves
Temperature and humidity measurements