How to Successfully Hatch Failing Eggs with Failed Incubation Attempts
How to Successfully Hatch Failing Eggs with Failed Incubation Attempts
If your hens' eggs have failed to hatch after 21 days but show viable embryos when candled, it is a sign that the embryos were developing but were affected by factors such as temperature, humidity, or inadequate brooding conditions. Here are steps to try to hatch the eggs yourself:
1. Assess the Situation
Temperature and Humidity: Ensure the temperature in your incubator or under the hen is consistently around 99.5°F (37.5°C) with humidity levels of 40-50 for the first 18 days and around 65-70 for the last days of incubation. This balance is crucial for proper development.
If the eggs are not under a hen, make sure they are turned regularly. This is essential for preventing the embryos from sticking to the shell.
2. Use an Incubator
If you have access to an incubator, transfer the eggs to it. This will give you more control over the conditions to ensure proper development.
Set Up the Incubator: Preheat the incubator to the correct temperature. Add water to achieve the right humidity levels. Place the eggs on their side in the incubator, marking one side of the eggs with a pencil to help track which side has been turned.
3. Turn the Eggs Regularly
Turn the eggs at least 3 times a day to prevent the embryos from sticking to the shell. Maintain the egg-turning routine as it is crucial for proper development.
4. Monitor Development
Continue to candle the eggs periodically to check for further development. Look for movement or changes in the embryo's position.
5. Prepare for Hatching
Lockdown Phase: Around day 18, stop turning the eggs and increase humidity to 65-70 to prepare for hatching.
Ventilation: Ensure there is adequate ventilation in the incubator to support the chicks during hatching.
6. Be Patient
Hatching typically occurs around day 21, but some chicks may take longer. Be patient and avoid frequently opening the incubator during this time.
7. Final Steps if They Hatch
Once the chicks begin to pip (break through the shell), avoid interfering. They may take several hours to fully hatch. Ensure they have a safe, warm space once they hatch.
Important Considerations
Risk of Infection: If any eggs show signs of spoilage or a bad smell, discard them immediately to prevent infection to the other eggs.
Chick Health: If a chick hatched but died shortly after, it might have been due to several factors. Ensure proper care and conditions for the remaining eggs.
Conclusion
While there is a chance that the embryos may not survive due to the earlier conditions, transferring them to a controlled environment like an incubator can increase the likelihood of successful hatching. Monitor them closely and adjust conditions as needed. Good luck!