Hypoxia in Incubation
Published: January 23, 2026
Source : Rasel Ahmed / Consultant
What is Hypoxia in Incubation?
Hypoxia is a condition where the embryo does not receive enough oxygen (O2) for normal metabolism during incubation.
Inside the egg, oxygen must pass through:
- Air cell
- Eggshell pores
- Shell membranes
- Chorioallantoic membranes (CAM)
- Embryos circulatory system
When the oxygen supply is lower than the embryo’s metabolic demand than embryo faces oxygen shortage, and this condition is called Hypoxia.
Scientific Impact of Hypoxia:
< Reduces ATP (energy) production
< Causes build up CO2 and blood acidosis
< Weakens heart and blood vessel function.
< CAM develops poorly
< Organ growth slows down
< Leads to mid or late embryonic mortality
Causes of Hypoxia during incubation:
- Poor ventilation in the incubator or fresh air chamber
- Excessive CO2 levels in the incubator or fresh air chamber
- High incubation temperature
- High temperature causes high metabolism, and for high metabolism embryo demand high oxygen, and if oxygen supply cannot match this demand than causes hypoxia.
- Poor eggshell conductance (Thick shell or low porosity)
- Certain breeder flocks (older flocks, low ca diet, stress) produce eggs with low pore numbers. As a result of low pore numbers, its reduces oxygen entry and CO2 exit. It also slows CAM development and causes embryo suffocation from the inside.
- High humidity in setter
- Excess humidity=small air cell and less evaporation
- Reduce space for gas exchange
- Embryo surrounded by excess fluid
- CAM cannot expand fully
- Poor Turning (First 7 days)
- CAM develops incorrectly
- Blood vessels fail to grow around the shells
- Contamination
- Contaminated egg release toxins, ammonia, and hydrogen sulfide. These gases damage the CAM blood vessels that’s why CAM cannot transport O2 which leads to hypoxia .
Hypoxia is one of the most common hidden causes of poor hatchability and weak chicks.
Related topics:
Authors:
Recommend
Comment
Share
Would you like to discuss another topic? Create a new post to engage with experts in the community.
HATO agricultural lighting
HATO is a global leader in animal-specific agricultural lighting solutions, designing advanced LED systems that enhance the well-being of animals.
Hy-Line International
Hy-Line International is a laying hen genetics company. Its flagship lines are the Hy-Line W-80, Hy-Line W-36, and Hy-Line Brown
Featured users in Poultry Industry
