How to feed deer without the cows eating the deer feed?

I hunt a piece of land that has cows on it and wanted to feed the deer before deer season to get them in the area. What are some things i can do to prevent the cows from eating all of the food i put out for the deer.How to feed deer without the cows eating the deer feed?
Put a 3-4ft fence around it or a 2 strand barb wire fence high enough to keep cows out. The deer will jump over.... and cows will stay out. Any kind of fence should work. I use to go to a orchard and pick up the apples the farmer did not want too. I know deer love apples....don't know about cows.......you can try....but i think the fence is your best bet.....get some corn on the cob or walk through a freshly harvested cornfield and pick up all the left overs if the farmers lets you.How to feed deer without the cows eating the deer feed?
I would put in a fence, we have deer reach over the fences we have our apple trees encased in, and the deer eat the trees down to the ground. I would get about a 4ft high fence, and wrap it in a square about 20ft around the feeder in a box formation.
Fence, i saw a deer jump a 6-10 foot fence


as for 3 feet i would make it 10ft by 10ft or 20x20
A fence, maybe?