Although I breed my doelings to kid on their first birthday (7 months...88+ pounds) , in fact all does are bred in October here for March babies, if you don't make weight you are sold, I do not recommend new folks do this.
I think as a whole goats you purchase, especially kids, do not grow as well as homegrown does do. It takes awhile for the new breeder to get their sealegs, find their feed managment, worming, cocci........and figure out who they are going to listen to. You purchased these goats from someone who likely has bred the breed for awhile? yet you are now not going to listen to her? Why? Is the bloodline perhaps slower maturing? It would be one thing to after you have bred these does for awhile, to then perhaps take a twin, breed one, let the other mature, then see for yourself. You also have alot less problems with kidding, if you let the doe mature, how big a kids does the buck you are breeding to throw? Are you selenium defficient, can you give Bo-se to make sure she gives you twins and not one big buck? In Nubian you also have alot more milk in an older 1st freshener than a younger one, so if all you are breeding is young does, you likely will not have enough milk. You also do not have as good of colostrum in a young doe. And when you do have a young doe, kidding on her first birthday, with a good milk supply and multiples (we have had an 11 month old have 3) you had better know your feeding managment, and have it working, and know what hypocalcemia and how to treat it, better yet how to prevent it, and know :worship: Sue Reith's :worship: article by heart
So, you will see some of us talk out of both sides of our mouth on this issue, what we do, and what we recommend our customers do. IF you are mirroring someones managment who is doing this, that is one thing. In Nubian if you are not feeding alfalfa hay or alfala pellets and these are good milkers, you will have bowed legs and/or hypocalcemia and/or weak small kids, if bred young and the does carry multiples. Vicki