pullorum disease

n.
A contagious, often fatal diarrheal disease of young poultry, caused by the bacterium Salmonella pullorum and usually transmitted by infected hens through their eggs.

[New Latin pullōrum, specific epithet, from genitive pl. of Latin pullus, young fowl. See pullet.]

A disease of birds caused by infection with Salmonella pullorum and characterized by moribund and dead birds at hatching time, by dyspnea and diarrhea in older birds and a reduction in egg yield, and reduction in fertility of the eggs in adults. The disease has been largely eradicated.

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The noun has one meaning:

Meaning #1: a serious bacterial disease of young chickens
  Synonyms: bacillary white diarrhea, bacillary white diarrhoea

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