3Gerloff B J.Dry cow management for the prevention of ketosis and fatty liver in dairy cows.Vet Clin North Am Food Anim Pract,2000,16(2):283-292.
4Knapp B G,Freetly H C,Reis B L,Calvert C C,Baldwin R L.Effect of somatotropin and substrates on pattern of liver metabolism in lactating dairy cattle.Dairy Sci,1992,75 (4):1025 - 1035
5Ingvartsen K L,Andersen J B.Integration of metabolism and intake regulation:a review focusing on periparturient animals.Dairy Sci,2000,83(7):1573-1597
