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Does incubation temperature determine gender of chicks? - Page 4

post #31 of 32

I read a study that suggested that the higher the temperature, the more males would hatch. The lower temps, more females would hatch. It had to do with mortality rates not the eggs changing genders. If an egg is born a female, it stays a female. If an egg is born male, it stays male. If you have your temp around 105, you will get more males that hatch (and more females that don't), and vice versa.

Every day is a gift... enjoy it...

 
White & Buff Ameraucanas, & also Bantam Lavender/Self Blue Ameraucanas
 

2 kids, 1 cat, and lots of chickens (mostly Ameraucanas)

 

 

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Every day is a gift... enjoy it...

 
White & Buff Ameraucanas, & also Bantam Lavender/Self Blue Ameraucanas
 

2 kids, 1 cat, and lots of chickens (mostly Ameraucanas)

 

 

Reply
post #32 of 32
Quote:
Originally Posted by CGilbert View Post

I read a study that suggested that the higher the temperature, the more males would hatch. The lower temps, more females would hatch. It had to do with mortality rates not the eggs changing genders. If an egg is born a female, it stays a female. If an egg is born male, it stays male. If you have your temp around 105, you will get more males that hatch (and more females that don't), and vice versa.
This.
The genetics remains 50/50 but after fertilization, it could be that males die off at lower temps and females at higher temps. That's not temp determining the sex; it's just temp determining survival.

Hens: 6 Rhode Island Reds (1/7/201515), 14 Silkies (03/12/2015), 2 Sicilian Buttercups (03/13/2015), 2 Marans (03/13/2015), 2 Buff Orpington (03/21/2015), 1 Gold Laced LF Brahma (POL 04/2015), 2 Silver Duckwing Phoenix (03/13/2015)

Roosters: 1 Delaware (01/2015), 1 Ameraucana (01/2015), 1 Silver Duckwing Phoenix (03/13/2015), 1 Buff Orpington (03/21/2015).

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Hens: 6 Rhode Island Reds (1/7/201515), 14 Silkies (03/12/2015), 2 Sicilian Buttercups (03/13/2015), 2 Marans (03/13/2015), 2 Buff Orpington (03/21/2015), 1 Gold Laced LF Brahma (POL 04/2015), 2 Silver Duckwing Phoenix (03/13/2015)

Roosters: 1 Delaware (01/2015), 1 Ameraucana (01/2015), 1 Silver Duckwing Phoenix (03/13/2015), 1 Buff Orpington (03/21/2015).

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