In the Brooder
- Jun 20, 2017
Hello! I have an extra Sapphire roo that I hate to part with and a bunch of Easter Egger hens. Any ideas what this combination might produce?
Well. It's nice to know someone was awake during high school biology!@Lasher Meadows
Look for the pea combs among your bunch of EE's. Usually (not always) but usually the blue shell gene follows the pea comb....but you won't have to think about this any as you'll only set the eggs from those EE hens that are laying blue/green. (Easy huh?)
Now to your Sapphire rooster. With a rooster, you won't know the color of his eggs, so that makes it difficult...but if you purchased from a quality breeder, your Sapphire *should* be a purebred White Leghorn (parent) with a purebred Cream Legbar (parent)...so a first generation hybrid of those two pure breeds.... or a careful re-breeding of siblings or parents to refine the line to always produce blue layers. That is good as the genetics will work for you....
The way the egg color genes work is this: There are 2 genes possible for blue shells. Purebred blue layers...pure stock (ie Ameraucana, Araucana, or Cream Legbar, etc.) have both genes...so a pair. That is why you are guaranteed blue eggs in pure lines as every offspring will have both blue shell genes....1 blue from each parent as blue is the only thing they have to offer.
With hybrids (EE's and Sapphires) one parent is a blue layer and the other is a non-blue layer. The purebred blue layer offers a gene, which will always be blue (considered capital "O"). Blue is dominant, which trumps the other non-blue gene, so you get close to 100% blue/green layers as the other parent will offer no blue (considered empty at that gene slot so little "o"...and thus white shell). Some funk can happen...so that's why I say *close* to 100%.
The hybrid shade of blue is generally lighter as only 1 blue gene is present....(hence the name for your rooster, "Sapphire" blue, or light blue.)
If the other parent was a brown layer, the genetics for brown wash pass down and that over the blue shell produces green, varying shades, depending upon how dark a brown line you are working with. (For olive eggers, you work with dark brown lines on one side and blue layers on the other).
Now let's set down to your math....The riskiest part of your equation is the EE as those aren't closely bred...BUT those are your hens, and you will only set the blue/green eggs so you know the hen has 1 blue gene possible to pass. As the blue-green laying EE has two genes to offer, only one blue, you get a 50/50 chance of whether or not your EE offers that blue gene. That means you statistically get 50% blue/green layers and 50% non-blue (brown or white, various tints depending upon the other parent) if you breed your EE to a non-blue gene bird.
HOWEVER...you are working with another hybrid blue layer line
Remember, since you are working with EE hens...you only set the blue/green eggs so you know you've got at least a 50% chance for 1 blue gene to pass down from the hen....you have to...it's shown by the egg.
Now your boy...he *should* have at least 1 blue gene as a Sapphire is a closer hybrid of White Leghorn over Cream Legbar. That means he has at least a 50% chance of passing down a blue gene to his offspring.
So now the math...and the Punnett Square comes in (which is fun as Punnett worked these equations out using chickens, notably Cream Legbars)....since you've got to calculate the possible combinations of both pairs of genes from both parents....
setting your EE hen for Oo (Blue/non-blue) and your Sapphire for Oo (Blue/non-blue)...matching 1 gene from each parent....working through all the matching possibilities of O's and o's, you statistically get 25% 2 gene blue layers (your darker blues); 50% 1 gene blue layers (your lighter blues); and 25% non-blue layers (your browns, tints, whites, even pinkish).
Yes, that is "statistically" as is flipping a coin enough times to get a true 50/50 heads and tails...so set a lot of eggs...but just with a coin, you usually don't have to flip it 100 times....the pattern gets set sooner than that, though not mathematically at a solid 50/50.
As to plummage...your Rooster is WL/CL.... White Leghorn is dominant white, so you'll get white plummage on all chicks. You will likely get some ghost barring from the CL side in your boy (that barring will have been passed down to your boy by the CL parent) but it's covered up with all that white....so your chicks will be pretty much a white bird with likely a crest. (I find those crests to be pretty dominant, at least in the first generation)....but with subsequent generations, which you will be working with away from that WL, the WL dominant white gets a bit less dominant and bleed through patterns will happen. (Fun starts to happen as white can cover up a lot of hidden plummage genetics...until they leak out).
So, it should be pretty easy....set your Sapphire rooster over the blue/green laying EE girls. What will you get? 50% light blue layers, 25% dark blue layers, 25% non-blue layers, statistically....add in some brown wash here and there and you get tints of blues and greens.
It sounds like a great project and a good way to re-coop those blue genes so that you get, by 2nd generation (F2) 100% blue layers (green too if brown genetics are also passed along), using your best offspring bred back to the parents (line breeding) up to 3 times to original parents, then best siblings from different generations to set the line.
I've not worked with Naked Necks, so I'm not familiar with the genetics for the naked neck and its dominance.i love all of this ..!!! very kool...!!! my question is , if im planning to use a cream leg bar roo with a turken hen she would be a brown egg layer , i really dont want green eggs and was hoping to create a turken that lays great blue eggs, and i guess the second generation bred back to the cream leg bar roo would be the beginnings of the blue egg layer with a crest..! i would love them to have the CL crest...! that i hope would also be turken style birds i was planning on that lays blue eggs , or am i wrong..? or this might be a bad idea..? i guess i would have to pick out the most turken looking hens to keep from the 2nd generation but then were do i go from there..? i want to keep the NN type bird because they are very good in hot clime's & i live in AZ, and i was hoping to keep the blue eggs & a crest as well & if i have the hens i have been planning to create, what roo should i use with them to create more of same..? brother or uncle roos or what..? to keep the balance i am looking for in these turken type of heat resistant crested blue egg layers. i hope my idea is not to far off the wall..? what say you all..?