The problems of pig breeding in this country can be treated under two headings : those affecting (1) the commercial producer and (2) the pedigree breeder. It is only by proper organization and co-operation between the two that the best results can be obtained for the pig industry as a whole. As it should be the object of the pedigree breeder to produce animals suitable for commercial production, the commercial breeding of pigs will be dealt with first and the special problems of the pedigree breeder later.