Heifer Feed Ration

What are some common rations for growing heifers up until breeding age? This ration shouldn't just be for show animals but for your standard productive female.  Just trying to plan ahead for the next years weaning time.
Thanks!

Our basic ration is a 15% protein, coarse blended feed that runs about 18% fiber & 3% fat. It contains a corn gluten pellet, cottonseed hulls and bean meal along with other ingredients. The protein is for muscle development & skeletal growth...the fat is for energy (growth & condition), and the fiber will help with digestion as well as keeping the feed from being too "hot". This feed is safe in creep feeders for calves & it works to hand feed growing cattle as well as cattle we may be developing for sale, etc. For show cattle, I hand mix oats & beet pulp and add to the ration, the quantities depending on what I need to do...add conditioning, clean one up, add fill, etc. I'm sure there are more sophisticated show rations available...this works for us because it's versatile enough & it can be customized or tweaked if/when needed, whether we have the feed mill do that (adding some fat, for example) or we do it at home by adding other ingredients for special circumstances, like oats & beet pulp.