Is it true that a lower temp makes more girls?

[xIndigoSkyx]

I heard that that lower temps affect ducks, but I was getting lots oflittle boys last year so I lowered the temp and I got ALL GIRLS!!! Does it work? I've gotten mixed answers, can you tell me truth?

 

[Miss Lydia]

I heard that that lower temps affect ducks, but I was getting lots oflittle boys last year so I lowered the temp and I got ALL GIRLS!!! Does it work? I've gotten mixed answers, can you tell me truth?

Must work for you, Congrats!!

 

[xIndigoSkyx]

Actually I'm worried that it could have just web a fluke, A lucky break.

 

[Miss Lydia]

Well next time you set egg try this again and see what happens. thats the way you'll know for sure.

Actually I'm worried that it could have just web a fluke, A lucky break.

 

[xIndigoSkyx]

Good idea!!!

 

[foothillsfiber]

So what is the temp that you lowered to?

 

[xIndigoSkyx]

For the life of me I can't remember. I think 95 maybe.

 

[duckyfromoz]

Temperature does not effect what sex a duckling will hatch. Just like humans the gender is decided genetically. What can happen is that with a change in the temperature more girls survive than boys- or vice versa. For example- Start with 20 eggs - a 10/ 10 split of sexes is reasonable- but doesnt usually happen in such small hatches. Change the temp and you may get 12 to hatch with a much greater proportion one sex.

 

[chicken_boy_Kurt]

Temperature does not effect what sex a duckling will hatch. Just like humans the gender is decided genetically. What can happen is that with a change in the temperature more girls survive than boys- or vice versa. For example- Start with 20 eggs - a 10/ 10 split of sexes is reasonable- but doesnt usually happen in such small hatches. Change the temp and you may get 12 to hatch with a much greater proportion one sex.

Is sex always determined in every species through genetics? Because I have definitely heard that most reptiles' sexes are determined by temperature.

 

[Ducks and Banny hens]

Temperature does not effect what sex a duckling will hatch. Just like humans the gender is decided genetically. What can happen is that with a change in the temperature more girls survive than boys- or vice versa. For example- Start with 20 eggs - a 10/ 10 split of sexes is reasonable- but doesnt usually happen in such small hatches. Change the temp and you may get 12 to hatch with a much greater proportion one sex.

X2
Basically, the temperature never decides the sex; rather, it favours one sex or the other. Higher temp: boys will all survive, most girls won't. Lower temp: Girls will all survive, most boys won't. Something like that.