feed breeding time

I was given 35 racers to start a loft. I am pretty proud of the light airy loft I build. 18 nest boxes and several rails to perch on near the roof. I painted the inside of the loft and place a window at the right angle to catch the most light I could. The birds are breeding now. It started out...

guys hope ull doing ok .i was just wondering what would it be the best mix of feed to get when a pair is breeding . not too long ago i got a mix from a local store here in houston i think that the guy call it maintance . at first the birds where ok with it but now it looks like they only like...