Well, I can tell you that none of my females who are 1000 grams right now will be bred this season - I plan to wait another season. I'd rather wait a season and get more eggs, than rush and get maybe 3 or 4 eggs at most. But that's how "I" have chosen to do it. I'd much prefer my girls be at or above 1700 grams at this point in the season.
yes as would i its not just about size its an age thing females bred after their 3rd winter do so much better in all regards