one method is similar to preparing for w/hood racer .....after show on return ,gradually break the bird down ,using depurative, then when next show due
gradually build it back up again with protein mix as you would a w/hood cock ,
some have to be fed individually in n/box as with all some greedy & have to be fed accordingly to prevent fat ,others dont eat enough so the reverse ....
hope that makes sense & answers query ....