Show STO N wa IT PAYS TO FEED IODINE TO SWINE tarco experiments experiment conducted conduct ell during three dir different ferent years tit nt the iowa experiment peri perli ment nent station anies ames have shown that lodino fed to young growing swine either on rape anpo pasture or in dry lots increased tho the rate of gaan about 10 per cent nna and tit lit tho the same tinie time reduced the feed required for a hundred pounds of gain about 10 per cent from froin these results the be station sta tion workers have concluded that it la Is a good plan for farmers in tho the northern half balf of the united states in the region to add sodium or potassium slun iodide to the ration of 0 their growing swine they recommend adding about one third to an ounce of either cither sodium or p potassium iodide to ao each hundred pounds of mineral alture ml ture which la Is kept before the swine at ill all times tile the results and recommendations riven given above are contained in a now new research bulletin by the town lown station no 86 studies in iodine V feeding the bulletin la is written by john M X evvard and 0 C C culbertson although it Is somewhat technical in nature it contains practical suggestions for the swine grower copies may be secured by writing to tile the bulletin section ames in the ames experiments the pigs gained an average of pounds per day when they had iodine in their ration while those of similar lots without iodine gained on the average only pounds per day the feed required for EL a hundred pounds of gain was only pounds on the average for the pigs in fit tile the lots getting potassium iodide while those without the iodide required pounds of feed to make a hundred pounds of gain the iodine fed pigs not only gained taster faster with less feed per unit of gain but also mado made greater dimensional growth in height in length and in leg circumference evvard states that during the 18 15 years lie he has been nt at tile the iowa station lie he has never observed any signs of goiter or hairless pigs la in the swine during that time Is the least number of pigs farrowed furrowed far rowed per year and an this number lias has ddn run as high as however during these same years owes which drank of the same water and ate feed grown on the same fields dropped lambs showing boltre goitre four different years it appears that although boltre goitre may riot not show up tip pigs in ili this region may actually lack sufficient clent iodine in their ration the water in towa iowa in fact the whole northern united states la Is known to have a low content of iodine the bulletin states that if a pig consumed 10 pounds of water per day of if the iodine content which ames water shows allows it would require the pig 1190 0 18 days to secure a single grain of iodine |