temp sexing during incubation

[HepCatMoe]

ive heard that between 80-83 produces females

84-87 produces a good mix

and 88+ produces males.

how true do you succesful breeders find this?

i saw on one site they said temps over 90 will also produces females.

anybody else hear this?

and one more question, how long does it take to "set" the sex?

as in can i incubate them at 82 for females for a couple weeks and then raise the temp to 85 to get em to incubate faster?

thanks!

 

[Halley]

Yes those temps seem to be right. I'm not a successful breeder yet, but from the research I have done, it seemed that 75% of the eggs that where TS, where the sex they are suppose to be. Meaning if you incubated the eggs at 90, 75% will be male and 25% female, and vis versa. Then yes, if incubated at above 90 (in RT book it said above 91) you will get mostly females. However the females will be nasty, and won't breed, so if you’re looking to hatch females out fast, this is not the way to go. It would be better to set the sex, which normally takes about 2-3 weeks. Then after the 3rd week, I would put the temperature at 87, as to much higher than that can stress the eggs. So yes incubate them for a couple of weeks at 82, and then put them at 87.

Keep in mind thought, that if you have clutches later on, that the temp sex will be different for them, because the temp in the incubator is no longer at 82, but 87 to start out with. So if you want more females, you may have to use a different incubator. Or just one that has a temp at 82 for female, one at 90 for male, and one at 87 for the females that need to hatch faster.

Also I have heard that eggs that where incubated at 90 for the whole time, where weaker and grew slower when they where born. So after 3 weeks you might also want to put the male eggs in the third incubator, if this is the route you choose to go.

Hope this helps you