Humidity - incorrect incubation humidity

(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.

• Dead-in-Shell
• Early-Embryonic-Death
• Hatching Problems (Late hatching, early hatching, assisted hatching, failure to pip, malpositioning, hatching failure)
• Mid-incubation Embryonic Death