That is going to depend largely on what you have sprouting up. But under most circumstances, the new growth will be somewhat attractive to wildlife as a food source.

Burning is a cheap way to do some weed control and remove plant residue. If I were going to burn, I probably would skip the step of disking, because disking is really only useful insofar as it controls weeds and cuts residue down to size. Burning should take care of both of those.