Objectives were to evaluate characteristics of uterine involution in ewes with pregnancy toxaemia during gestation and to study effects on subsequent reproductive performance. Pregnancy toxaemia was induced in ewes (A) by feeding an energy-deficient diet as confirmed by detecting β-hydroxybutyrate concentrations in blood indicative of this disorder. There was also a control group (C). Animals were evaluated until the 60th day post-partum using clinical and ultrasonographic examinations. Vaginal swab samples and uterine biopsy tissue samples were collected for bacteriological and cytological examination; biopsy samples were prepared for histological examination. Ewes were subsequently placed with rams and reproductive performance was ascertained. Post-partum, during the ultrasonographic examination of the uterus, ewes of Group A had caruncle and uterine lumen diameters, as well as a uterine thickness greater than ewes of Group C. Post-partum uterine blood flow volume was greater in ewes of the A than C group. Neutrophils predominated in vaginal samples, with the neutrophil proportion being less in ewes of Group A than C. There were no differences in the uterine involution process between groups. During the subsequent reproductive season, all the ewes of Group A lambed normally and produced viable lambs. It is concluded that there were no adverse effects on subsequent reproductive performance of ewes previously affected with pregnancy toxaemia, when appropriate health management was performed.

目的是评估妊娠期妊娠毒血症母羊的子宫复旧特征，并研究其对随后生殖性能的影响。通过饲喂能量不足的饮食，在母羊中诱发怀孕毒血症（A），这通过检测指示该疾病的血液中的β-羟基丁酸酯浓度来证实。还有一个对照组（C）。使用临床和超声检查对动物进行评估，直到产后60天。收集阴道拭子样本和子宫活检组织样本进行细菌学和细胞学检查；准备活检样品用于组织学检查。随后将母羊与公羊放在一起，并确定其繁殖性能。产后，在子宫超声检查中，A组母羊的car茎和子宫腔直径以及子宫厚度均大于C组母羊。A组母羊的产后子宫血流量大于C组。阴道样本中嗜中性粒细胞占主导地位，A组母羊中性粒细胞比例低于C。两组之间的子宫复旧过程没有差异。在随后的繁殖季节，A组的所有母羊正常产羔，并产下了可存活的羔羊。结论是，在进行适当的健康管理后，先前受妊娠毒血症影响的母羊对随后的繁殖性能没有不利影响。阴道样本中嗜中性粒细胞占主导地位，A组母羊中性粒细胞比例低于C。两组之间的子宫复旧过程没有差异。在随后的繁殖季节，A组的所有母羊正常产羔，并产下了可存活的羔羊。结论是，在进行适当的健康管理后，先前受妊娠毒血症影响的母羊对随后的繁殖性能没有不利影响。阴道样本中嗜中性粒细胞占主导地位，A组母羊中性粒细胞比例低于C。两组之间的子宫复旧过程没有差异。在随后的繁殖季节，A组的所有母羊正常产羔，并产下了可存活的羔羊。结论是，在进行适当的健康管理后，先前受妊娠毒血症影响的母羊对随后的繁殖性能没有不利影响。