Diagnosis and management of abnormal embryonic development characterized by formation of an embryonic vesicle without an embryo in mares
作者： Dirk K. Vanderwall , Edward L. Squires , Steven P. Brinsko , Patrick M. McCue
DOI: 10.2460/JAVMA.2000.217.58
关键词:
摘要: Objective—To determine the incidence, ultrasonographic characteristics, and risk factors associated with embryonic development characterized by formation of an vesicle without embryo in mares. Design—Prevalence survey. Animals—159 pregnant Procedure—From 1994 to 1998, mares between 11 40 days after ovulation normal abnormal were examined ultrasonographically, characteristics each conceptus recorded. Results—The incidence was 7/159 (4.4%) during 5 breeding seasons. Age breed mare or type semen used did not differ for development. The percentage which undersized ≥ 1 examination significantly higher conceptuses (5/7), compared (2/147; 1.4%). examinations w...
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