Copyright © 2020 River Systems - All rights reserved
8. PROBLEMS THAT MAY ARISE DURING INCUBATION
PROBLEM POSSIBLE CAUSE SUGGESTION
Eggs with thin shells Vitamin D deciency in parents Correct the feeding of the parents
and allow them to go scratching
Lack of sunlight
Dirty eggs
Errors in the management of the
nests
Improve the breeding
management
Broken eggs
Errors in the management of the
nests
Improve the breeding
management
Clear eggs
Unsuitable parents
Check the parent stock, their
feeding and the conservation of
the eggs
Storage of eggs at too high an
ambient temperature
Frozen eggs
Old eggs
Lack of vitamin G (riboavin) in the
daily ration of layers
Vitamin A deciency in parents
Death of the embryo after 2-3
days of incubation
Vitamin E deciency in parents Correct the feeding of the
breeders
Dead embryos at rst candling
(5-8 days)
Wrong temperature
Select more carefully the eggs to
incubate and if necessary check
and correct the operation of the
incubator
Insufcient oxygen
Eggs stored for too long
Poor ventilation
Blood rings are visible while
candling (5-8 days)
Bad egg storage Check the conservation of the
eggs, if necessary check and
correct the operation of the
incubator
Too high temperature during
incubation
Non-developing embryo
Clear eggs
Check the parent stock.
Check the temperature during the
storage of eggs.
Change the temperature during
incubation
Prolonged storage at low
temperatures
Too high or too low temperature
during incubation
Blood rings at a later incubation
stage
Prolonged storage Check the parent stock.
Check the temperature during the
storage of eggs.
Change the temperature during
incubation
Too high or too low temperature
during incubation
Eggs that explode at 8-14 days Incubation of dirty eggs Do not incubate dirty eggs
Embryo that does not develop at
8-14 days
Prolonged storage at low
temperature
Check the conservation of the
eggs, if necessary check and
correct the operation of the
incubator
Too high or too low temperature
during incubation
- 30 -
Mortality of embryos after the
second week of incubation
(15 - 18 days)
Too low or too high humidity
Select more carefully the eggs to
incubate and if necessary check
and correct the operation of the
incubator
Incorrect arrangement of the eggs
(with the point upwards)
Insufcient ventilation
Dead embryos in the second
week
Too high or too low temperature
during incubation
Select more carefully the eggs to
incubate and if necessary check
and correct the operation of the
incubator
Eggs not turned or turned
infrequently
Occasional lack of electricity
Too big air cell (excessive weight
loss)
Undersized eggs (too small) Select more carefully the eggs to
incubate and if necessary check
and correct the operation of the
incubator
Too low humidity during the
incubation phase
Too small air cell (small weight
loss)
Oversized eggs (too large) Select more carefully the eggs to
incubate and if necessary check
and correct the operation of the
incubator
Too low humidity during the
incubation phase
EN
To Next Page