Vergleich von stoffwechselrelevanten Parametern bei Kühen mit und ohne Puerperalerkrankungen zur Erkennung eines erhöhten Erkrankungsrisikos

摘要

Aim of the present study was, to show relations between various metabolic parameters and the occurrence of inflammatory diseases of the uterus in dairy cows. Additionally, we wanted to find limiting values that show an increased risk of disease if they were exceeded or fallen short of.In eight dairy herds 124 cows and heifers were examined weekly from week 2 before calving to week 5 postpartum. Metabolic parameters in blood as total protein, albumin, total bilirubin, aspartate aminotransferase, γ-glutamyl transferase, glutamate dehydrogenase and β-hydroxy butyric acid were examined once weekly from week 2 before to week 2 after parturition. Parameters in milk such as fat, lactose, fat-/lactose-quotient, protein, fat-/protein-quotient and urea were examined or calculated in week 1 and 2 postpartum in cisternal and residual milk, body condition was determined with body condition scoring on every date of examination. Gynaecologic examinations were conducted in week 2, 4 and 5 postpartum. Furthermore, additional data as milk yield, calving interval, dead births, problems at parturition, as well as the time from parturition to first insemination and calving to conception interval, was documented. For the evaluation of the data, cows were divided into two groups. Cows, that suffered from puerperal metritis, clinical metritis, clinical endometritis or pyometra were assigned to the group “ill”. Cows, that didn’t suffer from any uterine disease on one of the dates of examination, were assigned to the group “healthy”.If there were significant differences in parameters between groups, we formed limiting values for these parameters. The exceeding or deceeding of these limiting values showed a higher risk of disease.Probably the energy deficit, which is reflected in the change of metabolic parameters, is most likely responsible for an impairment of the immune system and thereby for the higher risk of suffering uterine disease.