QUALITY OF NATIVE LANT FORAGE SPECIES IMPORTANT TO WHITE ...
If you search the title above you will find a document about deer and native plants (in central OK). It shows OO as 1 of only 2 plants that are utilized by deer in all 4 seasons. Many of the forbs utilized by deer are seasonal and usage drops way off from November through Feb where OO shines. It also shows OO as very high in both CP (crude protein) and TDN (total digestible nutrients) the entire yr. Throw in the chart that shows browse makes up 41% of a deer's diet and the OO looks pretty appealing.
Yoder brings up preference. As I said before I seldom see deer eat the apples, but as a browse species I find them highly valuable. I think a lot of us get caught up in plotting and forget what nature already has in place. It's real easy to stump cut a few OO, leave the tops for winter browse, and watch it sprout next spring into a feast of leaves that are within reach of a deer herd. The real value of the pics in the other link are the browse lines.