My hen has been on 13 eggs for 6 days and all but one seem to been no chick. I cracked open the other 12 and they were fertille. Did I done the right thing or should I lefft theme alone. The mama wontt have but one baby
i definitely would've stopped after the first fertile one. The chances of a 100% hatch when only 1 egg is involved is pretty low I would assume.
Sometimes, 6 days isn't enough time to determine fertility, especially if they are tinted eggs. I candled after day 7, and now 10, but won't toss any (unless there are cracks or significant evidence that they are infertile) until day 14.
Why did you keep going after you saw one (or even several) fertile eggs?
Oh, i think I understand. When you cracked them open, you saw a bullseye meaning that they were initially fertile, but there was no embryo growth (veins). So when you cracked them open at day 6 you saw no veins meaning there was no devleopment. I read it initially that you cracked open one thinking it wasn't growing but you were wrong, and moved on to the next one and so on.
BUT i think i am understanding now.
How long ago did you hen and cock mate? could it be that they were fertile but not yet strong enough to be viable? I don't know much about the mating process, only that it take times after fertilization for the eggs to be strong enough to develop.
It could be that the egg was technically fertilized but not yet strong enough to become a viable embryo. My terminology could be way off, but I know that it can take a while after mating to get eggs that can develop and hatch successfully.