Which chicken hybrid is used in the major egg production corportations?

[serenitywest]

Which chicken hybrid is used in the major egg production corportations? Any guesses on any of the proprietary breeds?

 

[nicalandia]

Quote:
They dont use Hybrids per say, not on the say way Hatcheries do, they have special genetic labs improving their proprietary lines... for example the Hyline Silver Brown which is Silver at the Sex linked locus(basically like the Hyline Brown but instead of gold they are based on Silver) this line of hens will peak at 335 eggs per year..