||Physical / Climate, Atmosphere, Radiation
& Electricity / Type:
(This physical factors section is currently used in Wildpro
predominantly to link different data types and demonstrate
inter-relationships. It does not contain detailed information on
the physical factor itself.)
- Correct weight loss during incubation, by loss of
water through the shell, is essential for the normal development of chicks. Both too high
and too low incubation humidities are injurious to the developing embryo and may be
lethal. Incorrect humidity early in incubation is most likely to have a severe effect on
the development of the chick. Chicks which survive to hatching may be soft and oedematous
if humidity was high or small and sticky is humidity was low.
- Overall too high humidity may also result in an
air cell which is too small to support the chick during the initial phase of hatching.
- Too low humidity during hatching is recognized to
cause significant problems in drying out membranes, making it much more difficult for the
chick to hatch.
|Directly Associated Waterfowl Diseases