> I have found (as have others) that it is difficult to get horses to eat oil
> in their feed.  Mine would leave their grain...just not eat it.  I feed
> mostly corn anyway with no side effects "
What??? My horses lick their feed buckets clean if I give them corn 
oil--and if I spill it on the barn floor, the cats lick THAT clean. 
They'd unscrew the lids on the bottles if they could.