I don't believe you need anything special for feed. I fed 80%-90% Record Rack 16% with the remainder being cracked corn and none of my bucks lacked tine length. I tried to upload pictures but this page isn't working correct. Look at Blackout and Sampson in the previous edition of Mainframe. Blackout was about 50pounds off his weight with sloughing hooves most of the year and his longest tine is >17", Sampson's Brows are >15" both in hard antler not velvet before they shrink about 15%. I will say that a higher fat/protein diet is cheaper to feed because of the difference in feed intake.
