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  • 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.
    Author: Wittek T, Locher LF, Alkaassem A, Constable PD.
    Journal: J Am Vet Med Assoc; 2009 Mar 01; 234(5):652-7. PubMed ID: 19250045.
    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. DESIGN: Controlled clinical trial. ANIMALS: 30 lactating dairy cows with an LDA. PROCEDURES: 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 AND CLINICAL RELEVANCE: 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.
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