1Begg H. Diseases of the stomach of the adult ruminant [J]. Vet Rec,1950,62(51) :797-808.
2Delgado-Lecaroz R, Warnick L D, Guard C L, et al. Cross-sectional study of the association of abomasal displacement or volvulus with serum electrolyte and mineral concentrations in dairy cows [J]. Can Vet J, 2000,41(4) :301-305.
3Geishauser T,Reiche D, Schemann M. In vitro motility disorders associated with displaced abomasum in dairy cows[J]. Neurogastroenterol Motil, 1998,10 ( 5 ) : 395- 401.
4Massey C D, Wang C, Donovan G A, et al. Hypocalce mia at parturition as a risk factor for left displacement of the abomasum in dairy cows[J]. J Am Vet Med Assoc,1993,203(6) :852-853.