Immler Manuela, Büttner Kathrin, Gärtner Tanja, Wehrend Axel, Donat Karsten
Animal Health Service, Thuringian Animal Diseases Fund, Victor-Goerttler-Straße 4, 07745 Jena, Germany.
Unit for Biomathematics and Data Processing, Veterinary Faculty, Justus-Liebig-University Gießen, Frankfurter Str. 95, 35392 Giessen, Germany.
Animals (Basel). 2022 Mar 17;12(6):755. doi: 10.3390/ani12060755.
For dairy calves, sufficient supply with high-quality maternal colostrum is crucial to achieve adequate passive transfer of immunoglobulins. This observational cross-sectional study aimed to determine the influence of the prepartum metabolic status of dams on the serum immunoglobulin and total protein concentrations of their dairy calves, taking other relevant management factors into account. A total of 551 cows and their calves from 124 German dairy farms were included. Blood and urine samples of the cows were sampled 1 to 3 weeks before the expected calving date. Two generalized linear mixed effects regression models were fitted to the data. An increase in a dam's prepartum serum non-esterified fatty acids concentration was associated with greater serum immunoglobulin concentration in her calf. Calves of herds with established birth monitoring at night showed greater serum immunoglobulin and total protein concentrations. Calves being fed more than 2 L of colostrum and higher Brix values for colostrum were related to greater serum immunoglobulin and total protein concentrations in calves. In conclusion, there is evidence that, besides timely and sufficient supply of high-quality colostrum to new-born calves, the prepartum metabolic status of cows and birth monitoring impact the passive transfer of immunoglobulins.
对于犊牛而言，充足供应高质量的初乳对于实现免疫球蛋白的充分被动转移至关重要。这项观察性横断面研究旨在确定母牛产前代谢状态对其犊牛血清免疫球蛋白和总蛋白浓度的影响，同时考虑其他相关管理因素。总共纳入了来自124个德国奶牛场的551头母牛及其犊牛。在预计产犊日期前1至3周采集母牛的血液和尿液样本。对数据拟合了两个广义线性混合效应回归模型。母牛产前血清非酯化脂肪酸浓度的增加与其犊牛血清免疫球蛋白浓度的升高有关。夜间进行出生监测的牛群的犊牛血清免疫球蛋白和总蛋白浓度更高。给犊牛饲喂超过2升初乳且初乳的波美度值更高，与犊牛血清免疫球蛋白和总蛋白浓度更高有关。总之，有证据表明，除了及时且充足地向新生犊牛供应高质量初乳外，母牛的产前代谢状态和出生监测会影响免疫球蛋白的被动转移。
