Here's the chart I made up for Gerry last year:
Feed
Crude Protein
Crude Fat
Crude Fiber
Calcium
Phosphorus
Salt
Lysine
Methionine
Chicken Layer
16.00%
2.70%
4.00%
2.50%
0.40%
0.25%
0.70%
0.20%
Rabbit Pellets
17.00%
1.90%
20.00%
0.90%
0.25%
0.48%
Chick Starter
23.00%
2.00%
4.00%
0.50%
0.50%
0.15%
1.00%
0.30%
Starter Mix
18.67%
2.20%
9.33%
1.30%
0.38%
0.29%
0.85%
0.25%
Feed Mix
16.50%
2.30%
12.00%
1.70%
0.33%
0.36%
0.70%
0.20%
Difference (Starter Mix)
2.33%
0.30%
2.33%
0.08%
0.02%
1.31%
0.25%
0.45%
Difference (Feed Mix)
0.50%
0.30%
1.00%
0.55%
0.33%
0.29%
0.14%
0.16%
Mazuri Ratite Starter
21.00%
2.50%
7.00%
1.22%
0.40%
1.60%
1.10%
0.70%
Mazuri Emu Feed
17.00%
2.00%
11.00%
1.15%
0.65%
0.65%
0.84%
0.36%
The top three lines are the off the shelf feed in 50 pound bags, the next two lines are what they look like mixed together, each bag costs $10 and 100-150 pounds of feed lasts a LONG time, takes Gerry about 2 months to go through 100 pounds of food and not for a lack of trying. The starter mix is all three mixed evenly with the pellets ground to the same consistency as the starter and the feed mix is just the layer and rabbit pellets mixed 50/50.
Like ES said, it's just one of probably dozens of diets out there, but I find it very affordable, easy to do and Gerry loves it. You may want to ask for a sample of the rabbit feed to see if he'll eat it, I know Gerry refuses to eat certain kinds, or you could possibly replace it with the goat feed you have if he's already eating and enjoying it.