GROWING PERIOD (2-20  WEEKS)
RESPIRATORY

CASE HISTORY, FLOCK #2

      A flock of 30,000 eight (8) day old broilers is experiencing a respiratory disease.  Mortality over the past 3 days has been (100, 132, 175).  THis flock was vaccinated in the hatchery for Marek's Disease by sub-q injection and for Newcastle/Bronchitis by the spray cabinet method.


CLINICAL SIGNS, FLOCK #2

    Twenty (20) chicks were presented for examination.  Most had lacrimation and were sneezing.

Important Information:

 

DIFFERENTIAL
DIAGNOSES (DD)

EXPECTED POST MORTEM
FEATURES FOR EACH 
BEST CONFIRMED BY
WHAT FURTHER WORK-UP

 

POSTMORTEM EXAM, FLOCK #2

18/20  Dehydrated and the crops were empty
10/20                                       "Foamy" airsacs
8/20                            Catarrhal rhinotracheitis

 

Updated differential diagnosis (based on clinical history and postmortem findings) list the most likely first.

 

What further laboratory tests would you run to confirm your diagnosis?

 

Treatment (for each differential listed)

 

 Prevention (for each differential listed)