Show proteins in ration of dairy cows important the proteins in foods are re chiefly used used by the animal for the production of lean meat and the repair of tissues 1 e for growth and maintenance purposes but they may if sufficient in quantity also be used for supplying heat and making fat though they are not so economical for these purposes as starch and sugar in milk producing animals the proteins in the food have also to supply the raw material for the proteins in the milk of which there Is 3 to 4 per cent say one pound in every three gallons while the proteins can also make fat and give heat it la Is most important lantto to remember that boother no other substance can replace them in the making of muscle milk casela casein and albumen ete etc hence rations for all animals must contain enough proteins to supply the needs of the animal for repairs of tissues growth and the production of milk |