16
Symptoms
Probable Cause
Corrective Measures
Pipped eggs, but
died without
hatching
Insufficient moisture
Increase humidity during the hatching period.
Improper ventilation
Increase ventilation rate in incubator and/or
room, but avoid drafts.
Improper setting of eggs
causing malpositioned
embryos
Set eggs with small end down. Turn eggs
properly but avoid turning within 3 days of
hatching.
Symptoms
Probable Cause
Corrective Measures
Early hatching (may
have bloody navels)
High incubation
temperatures
Follow recommended incubation temperatures.
Check equipment for proper function. Guard
against electrical surges or high incubator room
temperatures.
Improper egg storage
Store eggs at 60 Degrees F. and 60% R.H. Turn
at least 3 times daily.
Symptoms
Probable Cause
Corrective Measures
Late hatching or not
hatching uniformly
Low incubation
temperatures
Follow recommended incubation temperatures.
Old or improperly stored
eggs
Gather eggs frequently, cool immediately and
store eggs properly. Do not store longer than 7
days.
Symptoms
Probable Cause
Corrective Measures
Sticky embryos
(embryos may be
smeared with egg
contents)
High average incubation
humidity
Follow recommended incubation humidity. Check
size of air cell as an indicator for adjusting humidity
condition.
Low incubation
temperature
Follow recommended temperature settings.
Lethal genes
Avoid cross breeding. May need to secure different
breeding stock.
Inadequate ventilation
Increase ventilation rate in incubator and/or room,
but avoid drafts.
Improper fumigation of
eggs
Fumigate eggs by following the procedure
carefully.
Symptoms
Probable Cause
Corrective Measures
Embryos sticking or
adhering to shell
Low incubation humidity
(especially during
hatching)
Increase incubation humidity by increasing water
evaporation. Embryos dried too much.
Excessive ventilation rate
Reduce ventilation rate but maintain minimum air
exchange to prevent suffocation of embryos.
