Marans Thread - breed discussion & pictures are welcome!

What is the genetic factor for production of side sprig? Recessive? Incomplete dominant?

My beautiful roo who was said to have a side sprig, out of 45 chicks, produced ONE side sprig roo so I am curious as to what the genetic factor is for side sprigs or has it been determined yet? His daughters without sprigs are 5 months old and his younger ones have no sprigs. One of his sons does have it so into freezer camp he goes. Dad is gone BTW but his babies are some pretty nice little pullets (all his cockerels are in the other barn as freezer camp inductees). His older daughters are laying some nice med. brown eggs albeit small still.
 
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Me too Don! There just isn't a lot of comb info out there. It would also be EXTEMELY beneficial to add pics to the write up, if at all possibel!
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That is interesting that you got so few offspring with side sprigs whereas I got so many...I am wondering about the genetic factors also. As far as I know the hen I used in that single mating with the side sprigged roo doesn't have any side sprigs in her background (I also have several of her bros and sisters here and they also don't have it). I have used her many times with other roos and none of her babies from those mating have had it. Looking forward to Don's opinion
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Taken from Poultry breeding by Morley A. Jull

That side sprigs are due to the interaction of two dominant autosomal genes which are complimentary in their action. so that when both are present either in the heterozygous or homozygous condition side -sprigs are produced.

Soon as I get my notes will post something on the combs.
 
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Debbi, eventually we will have pictures of all the comb faults and DQs. I also have a young male with the carnation comb.
 
Thanks Don. Then I am really wondering if complete dominant, why aren't side sprigs showing up in more of my former roo's offspring? Carrying two copies of the side sprig gene does guarantee side sprig in offspring because it is a dominant so even if from hens with clean combs, every single offspring should carry the side sprig because its dominant for homo or heterozygous. (going by my book learning here as well as decades of dog and horse breeding) unless what may have looked like a side sprig really wasn't? That is the only way I can understand that his 45 offspring (of which 30 are here and the other 15 are owned by a nearby friend) shows one side sprig. Geebs saw the cockerel at the recent swap meet and pointed it out to me so I went back over the 35 pullets/cockerels we have here and of course, found the one Geebs saw. I went over to my friend's house where he has several cockerels and hens and we looked at every single one of them and none carried a side sprig. Maybe I just missed them!

Again, I'm just trying to understand. I read the definition of side sprig was a *pointed* sprig versus a *bump* etc., but I guess any type of slight protuberance from the comb is considered a sprig.
 
Can anyone please post a pic of a "split wing"??

I've been reading the SOP and then checking out my birds...trying to learn!

BUT - I only have youngsters here and with the wing feathers growing in, I'm just not sure!!
Really need some pics of different ages, if any would help me out?

(then Geebs would also have them for her glossary, too!)
Thanks!
 

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