In addition to intentionally selecting for big appetite and fast growth, I think Bruce has handled and sorted and sized the CSBG ancestors so much that this is another trait they have.
Very possible Theo. Those that weren't stressed by this and grew well in spite of it were culled out as the fastest growers.
I'm convinced Bruce also selected them for aggressiveness at the same time, as they bite on the cage when they are trying to get at feed on the outside of the cage. You can actually hear little popping sounds.
