is it bad to stop turning in day 17 becaus i candles my eggs for the last time which is today to see and one of them you can’t t
see anything. can i stop turing on day 17?
Hi, welcome to the forum from Louisiana, glad you joined. This is an old thread. I have not read all of it so I'll start at the beginning.
Can you stop turning on Day 17? Short answer, yes you can. Now the long answer.
Turning eggs early in incubation helps improve hatch rate. Turning helps keep the yolk and developing embryo centered and helps in the development and hatching process. This does not mean that no eggs will hatch if you don't turn them but a higher percent will hatch if they are turned. The benefits of turning are over around 14 days after incubation starts. You get no benefit for turning them after two weeks, but it also does no harm if you turn them.
Are you counting the days correctly? That is a very common mistake when you start. It takes an egg 24 hours before it has a day's worth of development, so you say "one" the day after you start them. People want to say "one" on the day they start but it doesn't work like that. An easy way to check your counting is that the day of the week you start them is the day of the week the 21 days are up. If they go in the incubator on a Thursday the 21 days is up on a Thursday.
We typically go into what we call lockdown after 18 days of incubation. Humidity is what drives that. During hatch we want a higher humidity in the incubator to help the chicks hatch when they pip. Since chicks can sometimes pip a couple of days early we just use 18 days. And since it is convenient to increase humidity and stop turning at the same time, we just set 18 days as when to do that.
That 18 days is not set in stone either. To hatch, an egg needs to lose a certain amount of humidity. Nature was kind enough to give us a fairly large window of humidity loss that works. This is not as definitive as turning because different people lose different amounts of humidity during incubation, but most people will be fine increasing humidity a little early or late. The goal is to increase humidity before you see pips. Even if you don't manage to do that before you see pips you are often still OK. It's one of those things that increases your chances of success, it does not condemn you to failure if you don't do it.
You want to get the conditions as close to correct as you reasonably can to improve your odds, but you don't have to be that precise to be successful. Good luck and let us know how it goes,