Sex- linked Information

[englishcockers]

Thanks Lazy Gardener. I'm sure his daughters from SLW will be red at hatch and grow up to look a lot like dad, but with black crescents on the ends of a some feathers. Sons will be much whiter at hatching.

 

[englishcockers]

Oh, and Pea over Rose comb should get you cushion combs

 

[Kev]

Will try to post a pic.
Thanks, for the info on both counts.

My rooster does not have any black on his breast. He looks very much like a RIR roo. But he has a wonky pea comb. As I said, I'm hoping that he will give me sex links, but, won't be overly upset if he doesn't. His Daddy gave me some nice sex links. They're solid black, no red bleeding at this age. (they're 11 months old) They have very tight pea combs, and lay a nice large dark blue/green egg.


Jack, the roo in the fore ground. One of his 1/2 sister BSL in the back ground. I don't have a pic of him showing his breast.

I just figured out how to change my avatar. While that avatar pic is not as clear, it does show his chest a bit better. He's a nice boy, maybe not so much for his conformation, but he's a sketch, and adds a lot of personality to the flock.

Oh yeah he will work just fine for sex linking. He's pure for the gold gene. That's the main thing, using a roo pure for gold over a silver hen.

 

[lazy gardener]

Thanks Lazy Gardener. I'm sure his daughters from SLW will be red at hatch and grow up to look a lot like dad, but with black crescents on the ends of a some feathers. Sons will be much whiter at hatching.

Oh, and Pea over Rose comb should get you cushion combs

Thanks so much. Really looking forward to these crosses. (He'll be covering all of my flock, which also includes Dominiques = (BSL there, YAY!) a Pioneer which looks like a Buff Orp with a bit of black in tail and wing tips, (I'm half way hoping there may be some sex linking there?) and then there'll be a barn yard mix with the RIR, BSL, RCBL. I thought Pea x Rose = walnut. Is walnut the same as cushion? I thought cushion was smaller, which would be even more wonderful.

 

[englishcockers]

Both cushion and walnut are Rose + Pea. I'm not sure what causes the difference. I would guess the same sort of modifiers that cause so much difference in the size of single combs. But that's a guess. I would ask Henk69 for something difinitive. I don't forsee any sex linkage in a red to black tailed buff. The more I think about it the more I think the cross of your roo to SLW may produce more lacing than a regular RIR would, He appears more melanized ( has more black pigment) than a RIR. Just have to wait and see.

 

[Ridgerunner]

The Pea comb is partially dominant if it is split. Rose is fully dominant even when split. Tadkerson confirmed that for me. When you get a split Pea and no Rose, you get a comb where you can see the influence of the Pea but it’s just not right for a Pea but it is certainly not a Single. I have several of those.

I don’t know what the differences in Walnut and Cushion really is. In Australia they seem to say Cushion where we say Walnut in the States, but the photos I saw looked a little different too. I’ve never had a rose combed chicken so I have no direct experience with that.

Like you I expect the differences in the different walnut/cushion combs is due to modifiers and looking at the different single combs there have to be several different ones. That’s without throwing whatever modifiers make the Buttercup and Vee combs.

 

[lazy gardener]

Ridge Runner, what do you mean by split pea being partially dominant, and split rose being fully dominant? Thanks all for your input.

 

[Ridgerunner]

I’m trying to think of a good example but coming up dry. Maybe try this. I think you understand the B/B/S gene. It’s not quite the same but maybe it will help. If you have two copies of the Blue feather gene at that gene pair, you get Splash. If you have one copy of the Blue feather gene and one copy of the not-Blue feather gene at that gene pair, you get Blue feathers. Two copies of the not-Blue gene defaults to Black.

Two Blue genes at that gene pair means it is “pure” for Blue. One Blue and one not-Blue is “split” for Blue.

If a chicken has two copies of the Pea Comb gene, it is pure for Pea and will have a Pea comb. If it is split for Pea, one Pea gene and one not-Pea at that gene pair, you will get a Pea effect but it will not be a totally perfect Pea comb. It may be more raised or maybe look a bit more like a Single comb but swollen some at the base.

Of course nothing in chicken genetics is this simple. If you have Pea and Rose together you get a Walnut or Cushion comb. And there are modifiers out there that can affect any comb.

 

[lazy gardener]

Got ya. Kind of like recessive. I think that's what's going on with my rooster (got a straight gene some where along the way. If so, when he breeds the straight comb gals, I'm assuming that there might be 50% straight combs, statistically?

 

[Rancher3535]

The last two years I have experimented with sex-linking birds

Year 1 Barnevelder Male on Columbian wyandotte females
Year 2 Welsummer Male on Columbian Wyandotte females and on Barred Rock. The welsummer Barred Rock cross was to develop Welbars.

Both years were successful and I found very interesting.

This year I was going to try a Welsummer Male on White Leghorn females just for fun but read in Tim's first note about genetics that you should not use a white leghorn. Curious as to why you cannot use a white leghorn for sex-linked birds?