I understand what you're saying. It is frustrating to say the least. I am culling any LA chicks with vulture hocks and not keeping any with middle toe feathering. Should I cull the entire LA line?? I am willing to part with them and focus on my FRF birds if you think it would be best.
What I was thinking is maybe only keeping a few of the best LA pullets.. no excess white, no vulture hocks, and no middle toe feathering, then cull everything else.. including LA parent stock, all chick cockerels and all cull pullets. Then take those best pullets and put a FRF cockerel over them. Then take pullets from that mating and put a FRF cockerel back over them.. and so on and so forth until I am satisfied the vulture hocks gene is long gone.
My theory with what I would be trying to accomplish is:
1. The LA line has better tail angle and longer backs and the hens are nice and large, unlike my dainty FRF girl who is smaller and leaner. A lot of the genes for type and size comes from the hen. By using the LA pullets I think I could improve tail angle and back length.
2. Color comes from the cock in a mating. The LA line has some parasitic white and the FRF birds do not. By culling the LA cockerels and using a FRF male over the LA pullets the parasitic white could be corrected.
3. The LA birds have heavier leg feathering, the FRF birds have lighter. This could be corrected also this way.
The FRFxLA birds would be a project and marked differently than my pure FRF birds. I will continue to breed my main pen of FRF birds pure.
Thoughts?
I see your problem .you have to be very careful here and don t focus too much on the problem and forget the quality of your LA line .
you are saying LA chooks are better type . larger birds and better tail set . all this quality has to be maintained and bred true .Don t dismiss them because of the fault they carry Vulture Hooks and middle toes feathering
1) I agree with you on this point .LA pullet will improve the type and the tail set .
2) you are correct on the second point .color come from the rooster . so by using FRF rooster over the LA pullet you are going to improve the feathers color and type .
3) this point Heavy shank feathering is going to take you a quite some time to breed it out of your flock .
if you want to clear this problem faster out of your line .you need to find a clear shanks bird with a good type .that will balance the equation out . you need to add the recessive pti+ to your line. Because pti+ added to Pti2 will produce a healthy number of Pti1 marans type.
Breeding take time and passion .
Do no cull too early maybe your are missing out on other good trait .
good luck my friend
Chooks man