This document lists various hatching issues observed in eggs and chicks and possible causes for each issue. Some common causes mentioned include bacterial contamination, improper incubation temperatures or humidity levels, disease or stress in breeder flocks, inadequate ventilation or turning of eggs, and issues with the incubator itself. The document provides detailed potential reasons for a wide range of problems that can occur at different stages of incubation and hatching.
5. Conti…
Dead embryos second week of
incubation
Inadequatebreeder ration
Diseasein breeder flock
Eggsnot cooled prior to incubation
Temperaturetoo high in incubator
Temperaturetoo low in incubator
Too much CO2 in air (inadequateventilation)
6. Conti…
Aircell too small
Inadequatebreeder ration
Largeeggs
Humidity too high, 1 to 19 days
Aircell too large
Small eggs
Humidity too low, 1 to 19 days
Chicks hatch early
Small eggs
Leghorn eggsversusmeat-typeeggs
Incorrect thermometer
Temperatureto high, 1 to 19 days
Humidity too low, 1 to 10 days
7. Conti…
Chicks hatch late
Variableroom temperature
Largeeggs
Old eggs
Incorrect thermometer
Temperatureto low, 1 to 19 days
Humidity too high, 1 to 19 days
Temperaturetoo low in hatcher
Fully developed embryo with beak no in aircell
Inadequatebreeder ration
Temperaturetoo high, 1 to 10 days
Humidity too high, nineteenth day
8. Conti..
Fully developed embryo with beak in aircell
Inadequatebreeder ration
Incubator air circulation poor
Temperaturetoo high, 20 to 21 days
Humidity to high, 20 to 21 days
Chicks pipping early
Temperaturetoo high, 1 to 19 days
Humidity too low, 1 to 19 days
9. Conti..
Chicks dead afterpipping shell
Inadequatebreeder ration
Diseasein breeder flock
Eggsincubated small end up
Eggsnot turned first 2 weeks
Eggstransferred too late
Inadequateair circulation, 20 to 21 days
CO2 content of air too high, 20 to 21 days
Incorrect temperature, 1 to 19 days
Temperaturetoo high, 20 to 21 days
Humidity too low, 20 to 21 days
Thin-shelled eggs & Lethal genes
10. Conti…
Malpositions
Inadequatebreeder ration
Eggsset small end up
Odd-shaped eggsset
Inadequateturning
Sticky chicks (albumen sticking to chicks)
Eggstransferred too late
Temperaturetoo high, 20 to 21 days
Humidity too low, 20 to 21 days
Down collectorsnot adequate
11. Conti…
Sticky chicks (albumen sticking to down)
Old eggs
Air speed too slow, 20 21 days
Inadequateair in incubator
Temperaturetoo high, 20 to 21 days
Humidity too high, 20 to 21 days
Down collection not adequate
Chicks too large
Largeeggs
Humidity too high, 1 to 19 days
12. Conti…
Chicks too small
Eggsproduced in hot weather
Small eggs
Thin, porousegg shells
Humidity too low, 1 to 19 days
Trays not uniform in hatch orchick quality
Eggsfrom different breeds
Eggsof different sizes
Eggsof different ageswhen set
Diseaseor stressin somebreeder flocks
Inadequateincubator air circulation
13. Conti…
Soft chicks
Unsanitary incubator conditions
Temperaturetoo low, 1 to 19 days
Humidity too high, 20 to 21 days
Chicks dehydrated
Eggsset too early
Humidity too low, 20 to 21 days
Chicksleft in hatcher too long after hatching completed
Mushy chicks
Unsanitary incubator conditions
14. Contii..
Unhealed navel, dry
Inadequatebreeder ration
Temperaturetoo low, 20 to 21 days
Widetemperaturevariationsin incubator
Humidity too high, 20 to 21 days
Humidity not lowered after hatching completed
Unhealed navel, wet, and odorous
Omphalitis
Unsanitary hatchery and incubators
15. Conti…
Chicks cannot stand
Breeder ration inadequate
Improper temperature, 1 to 21 days
Humidity too high, 1 to 19 days
Inadequateventilation, 1 to 21 days
Crippled chicks
Inadequatebreeder ration
Variation in temperature, 1 to 21 days
Malpositions
16. Conti..
Crooked roes
Inadequatebreeder ration
Improper temperature, 1 to 21 days
Spaddle legs
Hatchery traystoo smooth
Short down
Inadequatebreeder ration
High temperature, 1 to 10 days