The aim of the present study was to evaluate the biochemical profile and reproductive performance in postpartum dairy cows with clinical metritis. The research was carried out using performed on 213 pluriparous lactating cows from two dairy herds in southeast Brazil. Dairy cows were assigned into a group of healthy cows (n = 147) and cows with metritis (n = 66). Blood samples to assess serum albumin, cholesterol, fibrinogen, calcium, gamma‐glutammyltransferase (GGT), aspartate aminotransferase (AST) and β‐hydroxybutyrate (BHBA) concentrations were performed on day 8 ± 2 postpartum. Metritic cows had lower (p < .05) serum albumin, cholesterol and calcium concentration, and higher (p < .05) GGT and AST activity, and BHBA and fibrinogen concentrations when compared to the healthy group. The calving‐to‐conception interval and services per pregnancy were higher in metritic cows (p < .01) than in healthy cows and the conception rate at first service was lower in metric group (p < .01). Variable importance in projection plots demonstrated that cholesterol was the main discriminator between metritic and healthy cows. Our results indicated alterations in the biochemical profile and impaired reproduction performance in metritic cows.

中文翻译：

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患有子宫炎的产后奶牛生化特征和繁殖性能的变化。

本研究的目的是评估具有临床子宫炎的产后奶牛的生化特征和生殖性能。这项研究是利用巴西东南部两个奶牛场的213头多胎泌乳牛进行的。将奶牛分为健康母牛（n  = 147）和患有子宫炎的母牛（n  = 66）。在产后第8±2天进行血样评估血清白蛋白，胆固醇，纤维蛋白原，钙，γ-谷氨酰胺基转移酶（GGT），天冬氨酸转氨酶（AST）和β-羟基丁酸酯（BHBA）浓度。有性奶牛的 血清白蛋白，胆固醇和钙浓度较低（p <.05），而较高（p <.05）与健康组相比，GGT和AST活性以及BHBA和纤维蛋白原浓度。结胎母牛的产犊至受孕间隔和每次妊娠的服务均高于健康母牛（p  <.01），而度量衡组的初次受孕率则较低（p  <.01）。投影图中的重要性各不相同，这表明胆固醇是区分母牛和健康母牛的主要因素。我们的结果表明子宫肥大牛的生化特征发生改变，生殖能力受损。