Question on incubation of chicken eggs

[Carter Martin]

Hi all,
I am wondering if someone can tell me at what point in the incubation of a chicken egg you for sure should be able to see veins when you candle the egg.
Thanks

 

[Chickens are awsome]

most of the time you can start to see veins by day 3 but if you are unsure about one you can for sure see it by day 7.

 

[SilverBirds]

If the eggs are white or light cream you can start to see veins at day 3. With darker colored eggs you start seeing them around day 7-10. Even if you don't see veining at day 7-10, wait till around day 14 to discard.

 

[Carter Martin]

At the moment I am incubating some eggs just to see if they are fertile. So I don't want to hatch them. It sounds like that at about day 3 and on I should be able to crack the eggs open and see veins if the eggs were fertile. Right?
Thanks

 

[nuthatched]

At the moment I am incubating some eggs just to see if they are fertile. So I don't want to hatch them. It sounds like that at about day 3 and on I should be able to crack the eggs open and see veins if the eggs were fertile. Right?
Thanks

You can shine a flashlight into them to see the veins.
So you started incubation then decided you didn't want to hatch them or are you just checking your flocks fertility?
You can crack un-incubated eggs and look at the yolk for that.

 

[EggSighted4Life]

At the moment I am incubating some eggs just to see if they are fertile. So I don't want to hatch them.

That can be done at breakfast time without incubation..

 

[IvysAnimals]

Usually around 3-7 days

 

[IvysAnimals]

At the moment I am incubating some eggs just to see if they are fertile. So I don't want to hatch them. It sounds like that at about day 3 and on I should be able to crack the eggs open and see veins if the eggs were fertile. Right?
Thanks

Instead of allowing an embryo to develop, just rack the egg open and look at the white circle. If it looks like a blob, it's infertile. If it looks like a white target sign, it's fertile

 

[Carter Martin]

You can shine a flashlight into them to see the veins.
So you started incubation then decided you didn't want to hatch them or are you just checking your flocks fertility?
You can crack un-incubated eggs and look at the yolk for that.

I started these eggs not intending to hatch them. I am not sure how many will even start growing. The more that don't start the better.
I know that you can supposedly tell if an egg is fertile or not just by cracking it open without incubating it. But you can be more sure one way or another by incubating, I would say.
What I am doing is separating from roosters, the hens that I want to hatch eggs from and then at about 4 weeks with no roosters around I put the hens with the roosters that I want to use with those hens. I do it this way because mostly, until I want to hatch eggs, a lot of my chickens are running together at least some of the time. So there is probably sperm from several roosters in one hen. I am wanting to hatch some chicks at about the end of April or so, so I separated my hens for about 4 weeks and now I am wanting to make sure that they didn't have any sperm left in them at that point. I have already put the correct roosters with these hens and if incubation shows me what I want to see, I will hopefully start incubating, and or get a hen to sit on, eggs from these hens within about the next two weeks.
Hopefully this makes sense, and maybe someone can tell me a better way to do this.
Thanks

 

[nuthatched]

I started these eggs not intending to hatch them. I am not sure how many will even start growing. The more that don't start the better.
I know that you can supposedly tell if an egg is fertile or not just by cracking it open without incubating it. But you can be more sure one way or another by incubating, I would say.
What I am doing is separating from roosters, the hens that I want to hatch eggs from and then at about 4 weeks with no roosters around I put the hens with the roosters that I want to use with those hens. I do it this way because mostly, until I want to hatch eggs, a lot of my chickens are running together at least some of the time. So there is probably sperm from several roosters in one hen. I am wanting to hatch some chicks at about the end of April or so, so I separated my hens for about 4 weeks and now I am wanting to make sure that they didn't have any sperm left in them at that point. I have already put the correct roosters with these hens and if incubation shows me what I want to see, I will hopefully start incubating, and or get a hen to sit on, eggs from these hens within about the next two weeks.
Hopefully this makes sense, and maybe someone can tell me a better way to do this.
Thanks

I see what you're trying for, but you can absolutely tell the fertility without incubation as EggSighted4Life has posted, as you've seen by now. It saves all the time it would take to incubate enough to tell. A month should be enough time for the hens to clear out.