Chart showing breeds used to create sexlinks

[Krys109uk]

With small females & large males would sound like one of the sex linked dwarfing genes.

The broiler industry, at one time, don't know if they still do, used dw females in order to have minimum cost for feeding, space etc & Dw+/Dw+ males. Giving normal size offspring; Dw+ females & Dw+/dw males.

 

[nicalandia]

Quote:
Close but no Cigar friend....

my current progect is that.(sex linked dwarf genes)......BUT as of today I will start that lost 100% sexable at hatch(even before hatching) sex link progect, but this time its on broilers...WHY? well males grow alot bigger and faster than hens(money savings), I plan on selling the males live at 12 weeks of age and disguise them as older and very large backyard Mutts..

WHY??..people here pay 3time as much money for a live backyard Mutts than a twice as fat dead broiler...so my broilers will look like MUTTS...

so..? are you close to Descovering my secret(hahah...

) sex link trait?? please try once more.. I promese to tell you if you don´t get it this time...:

 

[Krys109uk]

I will start that lost 100% sexable at hatch(even before hatching) sex link progect

Sexable before hatching....goodness. That is a puzzler... My first thought after reading that was one of the sex linked sex linked lethal genes.....but that wouldn't work.

I can't think of any sex linked gene that would enable one to sex the offspring before hatching. I can't think one could see well enough into an egg, at least without special equipment, to discern physical differences.​

 

[Promiselandfarm]

Would you have to candle to see if it grew faster in the egg?

 

[tadkerson]

Quote:
Commercial white leghorns have the wrong E locus gene; they are extended black or maybe birchen at the E locus. If you cross a black tailed red male (rhode island red) with a female leghorn all the chicks will be white. I have made the cross.

If a company produced a leghorn that was wheaten, columbian restricted, recessive and dominant white (no barring, blue or mottling)- then the offspring would be the correct genotype to get the most efficient color sexing.

There are other genotypes that will work but they are not as efficient and more difficult to determine the sex of the chick.

I made a sex linked cross using a barred Rhode island red on an appenzeller spitzhuaben. The males had a silverish chin and the females had a gold chin. Not a good way to sex chicks. I had a small number of chicks (10).

Nica,

Sex linked albanism.

Tim

 

[nicalandia]

Quote:
Sexable before hatching....goodness. That is a puzzler...

I know.....

Quote:
Close Close, but not there yet...

Quote:
you are close too....

ok guys I will open a new thread to explain ok....! thank for guessing...