It sounds like you're implying that breeding slows growth. I have a 2006 female that was 1200g (virgin) last season. Since she dropped eggs, she has skyrocketed to 1700g and looks ready to go again this year. On the other hand, I have a 2010 female that's breeding for the first time this year and hit 1700g already. I guess my point is that each animal is different, and we have to pay attention to their needs, not just our plans for them.