GROWING PERIOD (2-20 WEEKS) 
MORTALITY

CASE HISTORY, FLOCK #2

      A flock of 80,000 three week old caged pullets had a slight increase in mortality.  The serviceperson saw no specific clinical signs but sensed something was wrong.  Feed consumption had decreased.  He noticed "vent pecking" was common.


CLINICAL SIGNS, FLOCK #2

      12 birds were presented for examination.  The birds were depressed, with ruffled feathers and a droopy appearance and had diarrhea.  The morbidity is 70%.

Important Information:

 

DIFFERENTIAL
DIAGNOSES (DD)
EXPECTED POST MORTEM
FEATURES FOR EACH
BEST CONFIRMED BY
WHAT FURTHER WORK-UP

 

POSTMORTEM EXAM, FLOCK #2

11/12      bursal enlargement (2x), covered by a gelatinous transudate
11/12     dark, dehydrated muscles
6/12      swollen kidneys with urates
6/12     hemorrhages in skeletal muscles
1/12     infected yolk sac

 

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)