Baird Aubrey N, Mohamed Ahmed, Moore George E, Hawkins Jan F
J Am Vet Med Assoc. 2017 Nov 15;251(10):1182-1187. doi: 10.2460/javma.251.10.1182.
OBJECTIVE To evaluate reproductive performance and productive longevity of dairy cows treated for left displaced abomasum (LDA) with 1 of 2 surgical techniques (omentopexy vs pyloro-omentopexy). DESIGN Retrospective case series. ANIMALS 87 Holstein cows that underwent omentopexy or pyloro-omentopexy for LDA during a 5-year period. PROCEDURES For each cow with LDA, the most recent date of calving, age at time of surgery, and surgical procedure were recorded. Dairy records of cows treated for LDA in the 5-year period were reviewed to determine their reproductive performance. Records available for up to 4 years after the last surgery (ie, when all treated cows had left the herd) were reviewed to determine cull dates and reasons for treated and untreated cows in the herd. RESULTS Of the 87 cows with LDA, 58 underwent pyloro-omentopexy and 29 underwent omentopexy. Cows in the 2 treatment groups did not significantly differ in age. Fifty-six cows completed > 1 subsequent lactation cycle after surgery. The median time that cows with LDA remained in the herd was 566 days (range, 24 to 1,838 days); the times for the 2 treatment groups did not significantly differ. For treated and untreated cows, cull rates for reproductive failure or other problems were similar. Four (14%) omentopexy-treated cows and no pyloro-omentopexy-treated cows had a reoccurrence of LDA. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that cows with LDA that underwent omentopexy or pyloro-omentopexy had similar cull rates and reasons as unaffected herd mates over their productive time in the herd. Between the 2 treatment groups, only the LDA reoccurrence rate differed.
目的 评估采用两种手术技术（网膜固定术与幽门-网膜固定术）之一治疗左方变位真胃（LDA）的奶牛的繁殖性能和生产寿命。 设计 回顾性病例系列。 动物 87头荷斯坦奶牛，在5年期间因LDA接受了网膜固定术或幽门-网膜固定术。 程序 对于每头患有LDA的奶牛，记录最近一次产犊日期、手术时的年龄和手术程序。 回顾5年期间接受LDA治疗的奶牛的产奶记录，以确定其繁殖性能。 回顾最后一次手术后最多4年（即所有接受治疗的奶牛离开牛群时）的可用记录，以确定淘汰日期以及牛群中接受治疗和未接受治疗的奶牛的淘汰原因。 结果 87头患有LDA的奶牛中，58头接受了幽门-网膜固定术，29头接受了网膜固定术。 两个治疗组的奶牛年龄无显著差异。 56头奶牛在手术后完成了>1个后续泌乳周期。 LDA奶牛留在牛群中的中位时间为566天（范围为24至1838天）；两个治疗组的时间无显著差异。 对于接受治疗和未接受治疗的奶牛，因繁殖失败或其他问题的淘汰率相似。 4头（14%）接受网膜固定术治疗的奶牛LDA复发，而接受幽门-网膜固定术治疗的奶牛无复发。 结论及临床意义 结果表明，接受网膜固定术或幽门-网膜固定术治疗的LDA奶牛在其牛群生产期间的淘汰率和原因与未受影响的牛群同伴相似。 在两个治疗组之间，仅LDA复发率有所不同。
