Based on what I understand of the genetics for white sports in barred birds this is just a numbers game really and is probably higher in this breed because of the many genetic possiblities within this breed. So Im thinking that it isnt just a single pairing that is responsible for the higher numbers. It may be something we all might struggle with as we strive to hit certain traits. Id be interested to know if you are having more skewed results than would be normal. I know for example that Kathyinmo's recreated delawares appeared to have a similar sport ratio in the F1 cross. Since the white sports would be harder to autosex, i would think, then it may be that the numbers of white sports being mistaken or handled as males in this breed might result in them being under reported.
Id be intersted to know how often other barred breeds throw these white sports as it has been reported in many of them.
As I understand the white sport it is simply a recessive white gene.
To me that makes sense. I did not get any white sports last year. Last year was the first year I bred my birds. I had 2 hens and a rooster. This year I kept 7 hens (one original and 6 babies). and one rooster.
One of my original three had the recessive gene. In 25% of his/her offspring would have the gene, in a recessive position.
This year I have 2 birds with recessive genes breeding, Giving me 25% of their offspring as white sports.
I assume it is mother/son , but I could be wrong. if the rooster had the white sport gene 2 of my young would have the gene as a recessive, I am not getting the whites on a high enough number this year for that to be the case.
If you take 7 birds and one egg a day, in the perfect world,. that is 28 eggs a week. I set once a week, I get one white a week basically so only one hen is giving me the egg with a white in it. I have my birds separated into 2 groups in hopes of figuring out who gives it to me. I now mark the eggs group 1 or 2.
Of course, if I am right and my mother/son pair give me the whites I will get more next year as the offspring of theirs will have the recessive gene.
And if you're right it is several genes, I am screwed and have no idea what is happening..LOL