title: Effect of surgical correction of left displaced abomasum by means of omentopexy via right flank laparotomy or two-step laparoscopy-guided abomasopexy on postoperative abomasal emptying rate in lactating dairy cows.
abstract: OBJECTIVE
  To compare the effects of surgical correction of left displaced abomasum (LDA) by means of omentopexy via right flank laparotomy or 2-step laparoscopy-guided abomasopexy on postoperative abomasal emptying rate in lactating dairy cows.
  
  
  METHODS
  Controlled clinical trial.
  
  
  METHODS
  30 lactating dairy cows with an LDA.
  
  
  METHODS
  Cows were alternately assigned to 2 groups of 15 cows each to receive surgical correction of LDA by means of 2-step laparoscopy-guided abomasopexy or omentopexy via right flank laparotomy. A 50% D-xylose solution (0.5 g/kg [0.23 g/lb]) was injected into the abomasal lumen during surgery. Jugular venous blood samples for determination of serum D-xylose concentration were periodically obtained after injection. Abomasal emptying rate was evaluated by pharmacokinetic determination of the time to modeled maximal serum D-xylose concentration (T(max-model)).
  
  
  RESULTS
  Mean +/- SD abomasal emptying rate was significantly faster after laparoscopy-guided abomasopexy (T(max-model), 192 +/- 51 minutes) than after omentopexy via right flank laparotomy (T(max-model), 264 +/- 94 minutes). Rumen contraction rate and milk yield increased faster after laparoscopy-guided abomasopexy, compared with values obtained after omentopexy; however, milk yield did not differ after the 2 procedures.
  
  
  CONCLUSIONS
  Amelioration of abomasal hypomotility after laparoscopy-guided abomasopexy rather than omentopexy via right flank laparotomy may result in faster clinical improvement in the immediate postoperative period in cows undergoing correction of an LDA.
authors.affiliation: Medizinische Tierklinik der Universität Leipzig, Leipzig 04103, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Wittek
authors.forename: Lena F
authors.initials: LF
authors.lastname: Locher
authors.forename: Ahmad
authors.initials: A
authors.lastname: Alkaassem
authors.forename: Peter D
authors.initials: PD
authors.lastname: Constable
mesh_terms: D000018:Abomasum / Q000601:surgery*; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000601:surgery*; D005260:Female; D005746:Gastric Emptying / Q000502:physiology*; D007774:Lactation / Q000502:physiology; D010535:Laparoscopy / Q000379:methods / Q000662:veterinary*; D011183:Postoperative Complications / Q000453:epidemiology / Q000662:veterinary; D011897:Random Allocation; D012417:Rumen / Q000378:metabolism; D013272:Stomach Diseases / Q000601:surgery / Q000662:veterinary*; D016896:Treatment Outcome