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Guidelines for Troubleshooting Problem Hatches
Observation	Possible Causes
Early Embryonic Mortality	Delayed egg collection High egg storage temperature Long egg storage time Infected eggs Breeder malnutrition Rough egg handling
Mid Embryonic Mortality	Breeder malnutrition Infected eggs Inadequate egg turning Rough egg handling
Late Embryonic Mortality	Breeder malnutrition Inadequate ventilation Infected eggs Fluctuating incubation temperature
No Internal Pip	Weak chicks Dry chicks Wet chicks Malposition Infected egg
Internal Pip and Death	Hatcher temperature too high Hatcher temperature too low Hatcher humidity too high Inadequate ventilation Lack of social stimulation
Early hatch	Incubation temperature too high Incubation humidity too low Small egg size
Late Hatch	Incubation temperature too low Large egg size
Malpositions	Inappropriate egg position Inadequate egg turning Rough egg handling Breeder malnutrition
Malformed Chicks	Incubation temperature too high Breeder malnutrition Rough egg handling Chick malpositioning Genetic mutations Teratogens
"Wet Chicks"	Inadequate air circulation Excessive humidity Large egg size Thick egg shells Low egg shell porosity Breeder malnutrition
Small Chick Size	Incubation humidity too low Small sized eggs Thin eggshells Porous eggshells Genetic predisposition
"Sticky Chicks"	Incubation humidity too low
Externalized Yolk Sacs	Assisted hatching (premature) Infected eggs Breeder malnutrition Wet chicks Dry chicks Incubation temperature too high Fluctuating incubator temperatures
Yolk Sac Infections	Assisted hatching Inadequate umbilical care Unsanitary hatcher Infected eggs Inadequate egg harvesting technique

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