ese ▁may ▁consume ▁ 3 0 0   gram s ▁of ▁protein ▁and ▁another ▁ 8 0 0   gram s ▁of ▁grass es ▁per ▁day . ▁Far med ▁ge ese ▁allowed ▁to ▁gra ze ▁on ▁car ro ts ▁adapt ▁to ▁e ating ▁ 1 0 0   gram s ▁of ▁protein , ▁but ▁may ▁consume ▁up ▁to ▁ 2 5 0 0   gram s ▁of ▁the ▁car ro ts ▁per ▁day . ▁The ▁increasing ▁amount ▁of ▁feed ▁given ▁prior ▁to ▁force - feed ing ▁and ▁during ▁the ▁force - feed ing ▁itself ▁cause ▁expansion ▁of ▁the ▁lower ▁part ▁of ▁the ▁es oph ag us . ▁ ▁Pre ▁feed ing ▁phase ▁The ▁pre - force ▁feed ing ▁phase ▁consists ▁of ▁three ▁stages . ▁The ▁first ▁stage ▁(" start - up ") ▁last s ▁from ▁ 1 ▁to ▁ 2 8 ▁days ▁of ▁age ▁( 0 – 4 ▁weeks ). ▁During ▁this ▁stage , ▁the ▁young ▁birds ▁are ▁hous ed ▁in ▁large , ▁ind oor ▁groups ▁( e . g . ▁ 2 , 1 0 0 ), ▁usually ▁on ▁st raw . ▁The ▁second ▁stage ▁(" g row th ") ▁last s ▁from ▁ 2 8 ▁to ▁ 6 3 ▁days ▁of ▁age ▁( 4 – 9 ▁weeks ). ▁The ▁birds ▁are ▁moved ▁outside ▁to ▁feed ▁on ▁grass es ▁ad ▁li bit um . ▁The ▁birds ▁are ▁given ▁additional ▁feed , ▁but ▁access ▁to ▁this ▁is ▁limited ▁by ▁time . ▁This ▁stage ▁a ims ▁to ▁take ▁advantage ▁of ▁the ▁natural ▁d ilation