There are many factors which can effect the hatchability of an egg and make the hatching process unsuccessful.
Reasons for a poor hatch rate or no hatching eggs in an incubator are listed below;
- Old eggs.
- Infertile Eggs.
- Damaged eggs.
- Thin shelled eggs.
- Rough handling of eggs.
- Dirty and soiled eggs.
- Dirty incubator.
- Poor flock health.
- Poor nutrition in flock.
- Disease in the flock.
- Infection.
- Eggs not turned or not turned properly.
- Incubation temperature too high.
- Incubation temperature too low.
- Humidity too high during incubation.
- Humidity too low during incubation.
- Electric failure of incubator.
- Eggs stored for too long.
- Eggs not stored properly.
- Old hens or males.
- Inbreeding.