Adams G P, Kastelic J P, Bergfelt D R, Ginther O J
Department of Veterinary Science, University of Wisconsin, Madison 53706.
J Reprod Fertil Suppl. 1987;35:445-54.
The incidence of intrauterine fluid collections during dioestrus (12/43, 28%) and uterine cysts throughout the oestrous cycle (11/73, 15%) found in this study indicates that these ultrasonically detectable abnormalities are prevalent in mares. The hypothesis that uterine cysts do not affect pregnancy was not supported. Intrauterine fluid collections at dioestrus represented the presence of an inflammatory process as indicated by a high biopsy score, reduced progesterone concentrations, and a shorter interovulatory interval. Mares with fluid collections at dioestrus had a lower pregnancy rate at Day 11 and a higher embryonic loss rate by Day 20 than did mares without such collections. The progesterone profile and length of interovulatory interval for mares with uterine inflammation supported the hypotheses that embryonic loss in this herd was due to uterine-induced luteolysis rather than primary luteal inadequacy.
本研究发现，间情期子宫积液的发生率（12/43，28%）以及整个发情周期子宫囊肿的发生率（11/73，15%）表明，这些超声可检测到的异常情况在母马中很普遍。子宫囊肿不影响妊娠这一假设未得到支持。间情期子宫积液表明存在炎症过程，活检评分高、孕酮浓度降低以及排卵间期缩短均表明了这一点。间情期有积液的母马在第11天时妊娠率较低，到第20天时胚胎损失率高于没有此类积液的母马。子宫有炎症的母马的孕酮水平和排卵间期长度支持了以下假设：该群体中的胚胎损失是由于子宫诱导的黄体溶解，而非原发性黄体功能不全。
