One objective was to evaluate the association of dry matter intake as a percentage of body weight (DMI%BW) and energy balance (EB) prepartum and postpartum, and energy-corrected milk (ECM) postpatum with digestive disorders postpartum. For this, ANOVA was used, and DMI%BW, EB, and ECM were the outcome variables, and left displaced abomasum (LDA), indigestion, and other digestive disorders (ODDZ) were the explanatory variables. The main objective was to evaluate prepartum DMI%BW and EB as predictors of digestive disorders. For this, logistic regression was used, and LDA, indigestion, and ODDZ were the outcome variables and DMI%BW and EB were the explanatory variables. Data from 689 cows from 11 experiments were compiled. Left displaced abomasum was not associated with prepartum DMI%BW or EB. Postpartum data were normalized to the day of the event (day 0). Cows that developed LDA had lesser postpartum DMI%BW on days −24, −23, −12, −7 to 0 and from days 1 to 8, 10 to 12, and 14 and 16, lesser postpartum EB from days −7 to −5, −3 to 0, and 12, and lesser postpartum energy-corrected milk on days −19, −2, −1, 0, 7, 9, 10, 15, and 17 relative to diagnosis than cows without LDA. Cows that developed indigestion had lesser prepartum DMI%BW and EB than cows without indigestion, and lesser postpartum DMI%BW on days −24, −1, 0, 1, and 2, and greater DMI%BW on day 26, lesser ECM on days −24, −2, −1, 0, 1, and 2 relative to diagnosis. Postpartum EB was not associated with indigestion postpartum. Cows that developed ODDZ had lesser prepartum DMI%BW on day −8 and from days −5 to −2, lesser prepartum EB on day −8 and from days −5 to −2, and lesser postpartum DMI%BW than cows without ODDZ. Each 0.1 percentage point decrease in the average DMI%BW and each Mcal decrease in the average EB in the last 3 days prepartum increased the odds of having indigestion by 9% each. Cutoffs for DMI%BW and EB during the last 3 days prepartum to predict indigestion were established and were ≤1.3%/day and ≤0.68 Mcal/day, respectively. In summary, measures of prepartum DMI%BW and EB were associated with indigestion and ODDZ postpartum and were predictors of indigestion postpartum, although the effect sizes were small.

一个目标是评估干物质摄入量占体重百分比 (DMI%BW) 和产前和产后能量平衡 (EB) 以及产后能量校正乳 (ECM) 与产后消化系统疾病之间的关联。为此，使用方差分析，DMI​​%BW、EB 和 ECM 是结果变量，左侧真胃移位 (LDA)、消化不良和其他消化系统疾病 (ODDZ) 是解释变量。主要目的是评估产前 DMI%BW 和 EB 作为消化系统疾病的预测指标。为此，使用逻辑回归，LDA、消化不良和 ODDZ 是结果变量，DMI%BW 和 EB 是解释变量。汇总了来自 11 个实验的 689 头奶牛的数据。左侧移位真胃与产前 DMI%BW 或 EB 无关。产后数据标准化为事件当天（第 0 天）。发生 LDA 的奶牛在第 -24、-23、-12、-7 到 0 天以及从第 1 到 8、10 到 12、以及 14 和 16 天具有较低的产后 DMI%BW，从第 -7 天到 - 具有较小的产后 EB 5、-3 到 0 和 12 天，以及与没有 LDA 的奶牛相比，在第 -19、-2、-1、0、7、9、10、15 和 17 天的产后能量校正牛奶相对于诊断而言更少。与没有消化不良的奶牛相比，发生消化不良的奶牛产前 DMI%BW 和 EB 更小，产后 DMI%BW 在 -24、-1、0、1 和 2 天更低，在第 26 天 DMI%BW 更高，ECM 在产后更低与诊断相关的第 -24、-2、-1、0、1 和 2 天。产后 EB 与产后消化不良无关。发生 ODDZ 的奶牛在第 -8 天和从 -5 到 -2 天具有较小的产前 DMI%BW，在第 -8 天和从 -5 到 -2 天具有较小的产前 EB，产后 DMI%BW 低于没有 ODDZ 的奶牛。在产前最后 3 天，平均 DMI%BW 和平均 EB 每降低 0.1 个百分点，消化不良的几率分别增加 9%。确定了在产前最后 3 天预测消化不良的 DMI%BW 和 EB 临界值，分别为≤1.3%/天和≤0.68 Mcal/天。总之，产前 DMI%BW 和 EB 的测量与产后消化不良和 ODDZ 相关，并且是产后消化不良的预测因子，尽管影响很小。确定了在产前最后 3 天预测消化不良的 DMI%BW 和 EB 临界值，分别为≤1.3%/天和≤0.68 Mcal/天。总之，产前 DMI%BW 和 EB 的测量与产后消化不良和 ODDZ 相关，并且是产后消化不良的预测因子，尽管影响很小。确定了在产前最后 3 天预测消化不良的 DMI%BW 和 EB 临界值，分别为≤1.3%/天和≤0.68 Mcal/天。总之，产前 DMI%BW 和 EB 的测量与产后消化不良和 ODDZ 相关，并且是产后消化不良的预测因子，尽管影响很小。