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This is not just for you misschkenlittle,but its a good time to place a reminder, in attempt to save some chicks and some sanity
later on with this hatching.....![]()
Humidity is only used as a tool, you need to adjust it for air cell growth/weight loss in the egg. Humidity is NOT a set number, everyones conditions will vary with what climate, incubator model, size fans, the eggs themselves and so forth. You should weigh eggs and./or watch air cell grown to determine if you are on track or not. Its always best to have REMOVABLE small containers in the bators, there are tons of small rubbermaid containers that WILL fit inside the incubators even with an egg tray. Filling the channels and not having a way to reduce humidity is bad.
We have more people frantically asking for help in the ending of hatch because of the following......
#1 LOW TEMPS hatch prolonged, ill chicks, chicks too big and stuck in shell, unhached chicks etc. We even run into STILL AIR incubator users running at 99.5 instead of 102! A still air NEEDS HIGHER HEAT vs FAN MODELS, ALSO MOVE eggs around in the bator everyonce in a while, as there CAN be hot and cold spots! CALIBRATE EVERY SINGLE THERMOMETER! see HERE
Never trust the thermometer that comes with the incubator, always check it.
The thermometer that came with my incubator was off by 5 degrees.
That could mean life or death for your babies.
#2 Humidity is The second Biggest issue we see most in asking for help, high humidity has ill effects all around, these can also provide the most terrible hatches. And some people are told to DRY HATCH! Dry hatching doesnt mean no water at all necessarily! Its all about the air cells/weight loss! And you ALWAYS need humidity for final HATCHING!
CALIBRATE HYGROS! see HERE
Humidity is NOT A SET NUMBER, you need it YES!
However, you use it as a tool to "adjust" egg weight loss during incubation. We candle on days 7,10,14,18 To WATCH WEIGHT LOSS IN EVERY EGG! An EGG MUST lose approximately 13-14% of its weight during the incubation process. THIS IS YOUR GOAL!! You can monitor this by marking Air cells and also by weighing.
WHY to MEASURE WEIGHT LOSS IN EGGS,
MEASURING PROCEDURES (HOW TO), HOW TO CALCULATE, and HOW to interpret RESULTS
http://www.aviagen.com/assets/Tech_Center/BB_Resources_Tools/AA_How_Tos/AAHowto1WaterLossEN13.pdf
#3 Position, Turning & Ventilation- Yes, some people do set eggs air cell downLike my DH
A good turning schedule is always best! Ventilation is important, see the hatching 101 article sections for all of the above, in the end after lockdown some will close vents to adjust humidity, this is BAD those embryos need oxygen during this important time, never use vents as a way to adjust humidity, see article for suggestions!![]()
Yes there are tons of other things, like the hens age, health and so forth,
but in general the items listed above are what we get asked for help with when its too late!