Not sure on age as I bought him about 3months ago, he will weigh around 500lbs. For awhile he was doing good, but lately I've noticed his back side is covered with manure (scours) so I moved him up closer to the barn and went to the co-op. Lady there said he needed electrolytes and take him off grain and put him on hay. She said I could also mix some watermelon jello with his water to help get his electrolytes back up. I also noticed he keeps his head low alot but has continued eating and drinking. He also keeps one eye about half shut and the other eye he won't move. I've never seen anything like it, the "good eye" has good color but he won't move it, if you see him from the front he looks funny because he keeps the one eye about half shut and the other is fixed in place. I'm not sure what to do with him. I did give him a shot of LA200 last weekend thinking the one eye had pink eye but haven't seen any improvement in him opening it.