There still seems to be a bit of scientific controversy revolving around the idea of rabbits consuming corn. From what I have gathered, here are a few facts;
1. Yellow corn contains beta carotene, pro-vitamin A, which can be great for rabbits.
2. Dried corn is better than fresh corn, and even more digestible if it's broken up into tiny pieces.
However, there are some important details to take into consideration when feeding corn to rabbits;
1. Nearly ALL corn in the USA, whether human grade or livestock grade, is not 100% GMO free, meaning there is always that tiny chance for GMO related health issues down the road. Hence, one reason (among many) why you don't want corn in your pelleted mix. However, again, this
can be a tiny factor.
2.The outer layer of corn kernels contain polysaccharides and lignin, which in large amounts, can be a little difficult for a rabbit to digest.
3. Fresh corn can be problematic,
if eaten in large amounts. Because it is not dried, it can be swallowed without much chewing, leaving the hull intact. This could sequentially lead to minor intestinal impaction. For yet unknown reasons, a rabbit's bacterial flora has a difficult time breaking down corn hulls.
In conclusion, recent studies have shown that the consumption of corn has not lead to any
significant changes in a rabbit's digestibility or ceacal PH.
Anyway, I hope this has helped a little in your decision