Law of Probability - Hen or Rooster

[mamamahoney]

I couldn't resist my 2cents worth. I've read that storing eggs at 40° rather than 60 kills the male embryos allowing only female hatchlings but halving your hatch rate of course. Now; what are the odds of buying 10 day old maran chicks at auction (4$ ea) and ending up with 1 hen? 100% for me. I have a 40$ hen, lesson learned.

 

[TwoCrows]

I couldn't resist my 2cents worth. I've read that storing eggs at 40° rather than 60 kills the male embryos allowing only female hatchlings but halving your hatch rate of course. Now; what are the odds of buying 10 day old maran chicks at auction (4$ ea) and ending up with 1 hen? 100% for me. I have a 40$ hen, lesson learned.

My luck is just awful with any old straight run. I WILL get 80% or more roos guaranteed!

Does anyone know why there is NATURALLY more males hatched than females? Is this some sort of survival thing...in that maybe back in the Jungle Fowl days, the males had less likely a chance at reaching adulthood? It would seem to make more sense for nature to produce more females so that males could mate with more females and hence more offspring are born. So why does nature lean toward more males being born?

 

[JS69135]

The odds are that you will get 50-50.

So according to a study in Australia, the percentage of hens vs roosters goes up if you store the fertilized eggs at 40 degrees for several days prior to starting incubation - statistically you should get more hens.

Here's an abstract: http://www.publish.csiro.au/cp/AR9600664

JS

 

[lazy gardener]

Interesting.

 

[Magical Garden Girl]

Wanted to share this interesting article on sexing and increasing the chances of a hen vs rooster.
According to the author - Apparently the concept of temperature does Not determine sex as it's already determined although Roo embryos won't hatch at lower temperatures and hens will - hence theoretically the only eggs
That will hatch would be hens and the rest won't

http://www.fresheggsdaily.com/2016/04/the-secret-to-hatching-hens-not-roosters.html?m=1

 

[gpop1]

We have tried refrigerated eggs. these eggs were given to us and some had to be discarded because they had cracked in the fridge. We set the remaining eggs and had a large amount that failed to show signs of fertility. The ones that did hatch were females.

Im not going to say it works as 48 eggs resulting in 9 females is a terrible result. With out having random 2 batch's both incubated at the same time its not a true test just a interesting result.

Now if you are interested in males I believe you can increase the odds by only introducing the male a hour per day. The logic being that mother nature will try to increase the amount of males to protect the flock. As this is the last thing I want I have never tried it but I know people who swear by it.

 

[Josip]

I know this is old ,but
Last year i had one rooster and 20 hens and out of 16 chiks Hatched 11 were males.. Mother nature was THINking , this poor hens need more Boys to play
This year i tryed fool Mother nature so i put 2 roosters with 10 hens..so we Will see result in 10 days.. i put just 10 eggs this time

 

[JacinLarkwell]

And it's actually the hen that determines sex, not the rooster, as previously said in the first page

 

[Josip]

And it's actually the hen that determines sex, not the rooster, as previously said in the first page

I read that to, so this year i only put 10 New hens am super Into breaking cockorel curse