A long-term study on the health status and performance of sows on different feed allowances during late pregnancy – III. Escherichia coli and other bacteria, total cell content, polymorphonuclear leucocytes and pH in colostrum and milk during the first 3 weeks of lactation - Persson, A; Pedersen Mörner, A; Kuhl, W (Acta Vet Scand, 1996)