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Eggs can become rotten or explode due to the following reasons:
- Eggs become infected with infectious diseases from the parent flock (Salmonella bacteria).
- Wet and dirty bedding or laying nests leads to infections of the egg with bacteria (e.g. Pseudomonas, E.coli, etc.).
- Eggs have been wet prior to setting.
- Improper egg cleaning procedures
- a) Cleaning eggs in water which has a lower temperature than that of eggs
- b) Cleaning eggs with a disinfection solution that has been prepared incorrectly not following the manufacturer recommendations.
- High air humidity during egg storage.
- Contamination during storage. Activities like sweeping or spraying water on the floor of the egg storage area can deposit large amounts of bacteria on the eggs.
- Failure to clean incubators following an egg explosion leaves bacteria in the chamber that can contaminate other eggs.