Show vitamins Vita mines and minerals aleavy laying inking foag require from three to four pounds of oyster shell per head per 5 year car even though tho the liens hens have enough protein and other ethl r food to produce n R largo large number of eggs they 1 will l cut production product lou down to meet tho the amount or of min brals which they have for shells A balanced ration dors dora not mean inertly supplying protein to balance ba I 1 once the carbohydrates and fagg ats it also means supplying i and vit quines |