Robert this is only my opinion, but the green bag if i remember,is 20% or 16, 20 desinged to enhance natural forage, 16%, rut diet i think none for fawns, but it good feed if you mix it, 20 to much protien, burnng fat, corn should help, but main thing is it is formulated for certain areas,and antlers not fawn nutrition, i found best feed, 14%creep and 10 or 12% sweet feed, Baby beef.your manna or supercharger,or purina. to bring up protien,my fawns get manna bucks get supercharger, all getting cheap 14 ,and 12% sweet, then add purina if you choose.i just dont think strait purina is good for fawns,my thoughts only.Dc as far as spikes that genitic, and nutrition or lack of,the purina should cover the antlers but not fawns,DC Ps i have tried purina, maxrax ,record rack,i love the cheap,14 and 12 sweet. just add your likings.i like the purina or maxrax or record rack, as my additives,I will never again feed a complete diet,or one the by lonsome.It all starts with nutrition in the womb, bottle feeding,then their grain.most deer feed is desinged for anter,Dc