The Legbar Thread!

Well since I wasn't online, you guys beat me to the sex determined at fertilization, by the hen, reptile sex ratio determined by temp (you can actually get the sex you want when breeding geckos by how you incubate the eggs), but you didn't alll beat me to......

But it tastes like chicken............................
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Deb
 
I will have legbars hatching each week from here on out starting friday. I think I have 6 eggs in this batch in lockdown now. then 13-15 eggs in the next hatch, then like 20-25 in the next hatch. we'll see what hatches but surely there will be some pullets for sale! :)
Me Too :) Been hatching like crazy. Getting lots of Pullets... So Much fun!!!
 
I know people that "Stress" their herd sires in cattle and goats to produce more females than males. In mammals the male determines the gender (opposite of birds). They say that the male chromosomes travel faster than the female chromosomes but that they don't live as long. They claim that an "unstressed" herd sire will produce more male off because the males chromosomes reach the egg before the females chromosomes can, but a "stressed" herd sire will have the more female off spring because the fragile males male chromosomes die before they reach the eggs allowing more female chromosomes to fertilize the eggs (tortoise and the hare theory is guess).

Again, I don't know how much of this has been extensively studied or "proven", but a goat breeder a few hours from me said she has got more does than buck since she started stressing her sires four years ago. :)
I went to a sex selection clinic years ago when I wanted a boy child ( I already had 3 daughters) and it works the same way with humans. The male producing sperm swim faster, but don't live as long. (Timing is the key in humans), but they told me that men who wear tight pants, work with lots of heat or where there is a lot of pressure on the body will tend to produce more females, because the heat and pressure kills off the male producing sperm before it even gets to the female. Anyway, to make a long story short.....I believe there could be some correlation as to the humidity and temperature as the the hatch rate of males to females. The heat/humidity would be the same as heat and pressure to the human sperm. Roos and females each having their own ideal settings. Did I make any sense at all?????
 
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In mammals the male have one X one Y chromosome while the females have and X and and X. If the male passed an X the off spring is females, if they pass a Y the offspring is male.

Birds are opposite. The female has a Z and a W chromosome. The Male has a Z and a Z chromosome. The male will aways pass a Z, so the gender is determined by whether the hen contributes a W or a Z to the union.

Note: the barring gene is located on the Z chromosome , but no on the W chromosome which is why Cream Legbars cockerels always have a double barring gene and the females only have one. The double barring dilutes the chick down where single barring doesn't which is what makes the autosexing possible.

Oh...and yes FLOWERBH you made sense of that. I just wonder if any chicken specific studies have been done on gender determination and climate since chickens are "different" from everything else.
 
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That second article is fascinating to me... I wonder if any further studies have been done in the 10 years since this one was published. Too bad the results skewed the gender ratio in favor of males or the hatcheries would be ALL OVER this one!

Rinda
 

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