Is it true that a lower temp makes more girls?

To make it easier, yes or no.

  • Yes, so works for me!

    Votes: 0 0.0%
  • No way, FAKE!

    Votes: 5 100.0%

  • Total voters
    5

xIndigoSkyx

Songster
9 Years
Dec 4, 2010
422
4
121
St.Albert, Alberta
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?
 
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duckyfromoz

Quackaholic
10 Years
Jan 11, 2010
5,583
118
241
Australia
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

Songster
11 Years
Mar 20, 2008
3,064
23
221
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

Songster
8 Years
Nov 22, 2011
2,733
17
151
On a little Farm.
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.
 
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