Show MINERAL NEEDS FOR SWINE HERD interesting experiments are made at ohio station tile the mineral requirements of 0 pigs lias has been A subject of much expert mental work and some controversy for r several years the ohio station makes the following brief report on some work done to test out the effectiveness of everal substances commonly used in mineral mixtures feeding investigations with swine during the year icar included a test to study the effect of adding various minerals to the simple mixture of silt salt 1 pa part rt llin limestone estone 2 parts and raw bone meal 2 parts tills mixture and tile the various additional minerals were fed with a ration of corn and soy bean oil meal which Is known to be deficient in ili minerals glaubert Glau bers salts which alch la Is a laxative was fed at the rate of 10 pounds in each pounds of the mixture the snits salts did not increase the rapidity of growth but brought about a slight saving in feed for or each pounds of gain produced produce wood charcoal to tile the extent of 15 per cent of tile the mineral mixture resulted in neither faster nor cheaper clie aper g gaan a I 1 iodide in tile limited amount of 05 pound to every eiery pounds of minerals proved to be beneficial efi cial it Is used as a pr preventive of of goiter and under some conditions skeins seems to have a place in mineral mixtures for growing pigs copperas or iron sulphate was used as a source of iron and fed at the rate of 2 pounds in each pounds of minerals the pigs receiving it made 3 2 pound more gain dally daily a lead head and consumed pounds less feed to each pounds of gain than those on the same ration without the copp copperas erns |