Show pigs pig j fed minerals will lake most rapid gains Allne minerals rals in the ration fur for pigs prevented lameness and gave the best gains in a series of winter or dry lot tests conducted nt at tile olito ohio experiment station atlon bt the mixture of two parts ground limestone two parts bone meal and one part salt quit as heretofore by that station again proved tile best la in it a long list of u nun inin eral mixtures in the swine ration in which soy bean oil meal was fed as the protein feed with yellow corn this mixture it was explained to visitors on live stock day supplied not only the necessary stilt salt but ulso also all tile the calcium and phosphorus needed the latter are prime essentials without these elements in tile the grain ration pigs soon boon contracted rickets and lameness ground limestone was superior to a refined grade of time lime or calcium carbonate due in part apparently to the small of iron carried by the limestone anil required by the pigs for proper development this fact ima not been appreciated heretofore and Is evidence of further need of much careful investigation in the feeding of live stock i |