Sex- linked Information

[Arielle]

Quote: THere is the need to be able to SEE the spot; so in theory this could work. THe chicks cannot be light colors, like yellow or silver. RIght?

 

[nicalandia]

THere is the need to be able to SEE the spot; so in theory this could work. THe chicks cannot be light colors, like yellow or silver. RIght?

thats right, donimant white birds and Silver chicks based on wheaten or if the silver chicks are columbian restricted(like Delaware) one cant use this method, but one can still use delaware hens on black roosters and be able to spot the head spots(Extended black is dominant to eb based delaware and Co has not effect of extended black chick down or in adulthood)


one can see the faint spots on lavender barred chicks...
not my birds(the lavender ameraucana project)


on some breeds like the cream legbar the headspot on the girls is missing all together.. but the boys always carry them, eve if only one copy of the sex linked barring gene is pressent..

 

[nicalandia]

as to show that Delawares can be use on black to produce sex links I show the below cross(even if this particulary chick could be both as the sire was the barred one)

The parents are a Delaware roo and a Splash Ameraucana Mother..

 

[Arielle]

as to show that Delawares can be use on black to produce sex links I show the below cross(even if this particulary chick could be both as the sire was the barred one)



Quote: I'm lost-- the chick has a head spot, but neither parent is a barred parent? Because the cross is a Deleware hen and black rooster which would give spots on head of male chicks.

Did I understand this correctly??

 

[farmerChef]

I'm lost-- the chick has a head spot, but neither parent is a barred parent?  Because the cross is a Deleware hen and black rooster which would give  spots on head of male chicks.

Did I understand this correctly??

Delewares are barred Columbian

 

[Arielle]

Quote: Delawares are barred, but it gets restricted?

 

[catdaddyfro]

Delewares are barred Columbian

Delawares are barred, but it gets restricted?

Well ya'll are real close in the description of the Delaware color pattern they are actually diluted barred which is a result of the columbian restrictors in their genetic make-up. I'm surprised that the chck showed that color but things happen in such crosses in all my numerous crosses when using a Delaware as the male progeny the offsring usually comes outs somewhat Delaware patterned mostly or blue/or blue barred. I'd bet if you could see the chick of Cetawins that nicklandia posted I'd just about bet its blue.

Jeff

 

[nicalandia]

Delewares are barred Columbian

based on eb brown and sex linked silver

Delewares are barred Columbian

Well ya'll are real close in the description of the Delaware color pattern they are actually diluted barred which is a result of the columbian restrictors in their genetic make-up. I'm surprised that the chck showed that color but things happen in such crosses in all my numerous crosses when using a Delaware as the male progeny the offsring usually comes outs somewhat Delaware patterned mostly or blue/or blue barred. I'd bet if you could see the chick of Cetawins that nicklandia posted I'd just about bet its blue.

Jeff

thats because delawares are restricted by Co(Columbian) and columbian has NO effect on its own on Extended Black, the chick shown(delaware mix) has a genetic make up of E/eb(E from the ameraucana, eb from the delaware) Co/co+(Co from delaware and co+ from ameraucana) therefore making that chick all barred as adult....

 

[Arielle]

Thanks Nicalandia and Jeff, I'm getting there--getting more confused. Need to think about it a minute.

Americana was EE,co+co+
Dellie was ebeb, CoCo and silver and barred

Cross this black AMericana, on the Dellie and get sexlinked chicks which are black with white spot for male and black with no spot for female.

Correct me if I got it wrong.


Back to my original question, If I use a hen that is barred and carrieseither (1) partidge or rhodeisland red red or (2) carries E which masks the red and mate her to

a rooster that is either (1) red or (2) black masking the red , this will result in a phenotype of black or dark brown making the head spot visible.


Which reds work for this? yes for eb
no ewh ? too light? or just need a good eye?

 

[nicalandia]

Thanks Nicalandia and Jeff, I'm getting there--getting more confused. Need to think about it a minute.

Americana was EE,co+co+
Dellie was ebeb, CoCo and silver and barred

Cross this black AMericana, on the Dellie and get sexlinked chicks which are black with white spot for male and black with no spot for female.

Correct me if I got it wrong.


Back to my original question, If I use a hen that is barred and carrieseither (1) partidge or rhodeisland red red or (2) carries E which masks the red and mate her to

a rooster that is either (1) red or (2) black masking the red , this will result in a phenotype of black or dark brown making the head spot visible.


Which reds work for this? yes for eb
no ewh ? too light? or just need a good eye?

yes, cross a black/blue rooster with a delaware hen and you will get sex links...

as to your original question, yes if your hen is barred and carries partridge and is your roo is red or black, this will create sex links, you will be able to spot the head spot...

now back at why barred wheaten cant be sexed at hatch? thats because their down is yellow and the head spot is yellow, this makes it impossible to spot it...!!

here some lemon cuckoo orp chicks..

http://www.google.com.ni/imgres?sta...&tbnw=204&ndsp=20&ved=1t:429,r:17,s:108,i:134