DIETARY EFFECTS ON SOW PRODUCTIVITY TO THREE PARITIES - THE PRIMARY OBJECTIVE OF THIS PROJECT IS TO DETERMINE THE EFFECTS OF DIETARY MANIPULATION (ENERGY AND AMINO ACID LEVEL) ON GILT DEVELOPMENT AND SOW LIFETIME PRODUCTIVITY. SURVEY COLSTRUM AND OTHER LITTER OF ORIGIN EFFECTS ON GILT DEVELOPMENT AND SOW LIFETIME PRODUCTIVITY. ASSESS THE CONTRIBUTION OF GILT SOCIAL STRUCTURE ON GILT DEVELOPMENT AND SOW LIFETIME PRODUCTIVITY. ASSESS RELATIONSHIPS BETWEEN GILT DEVELOPMENT, SOW LIFETIME PRODUCTIVITY AND MAMMARY GLAND DEVELOPMENT AND FUNCTION.