[The preliminary stage of labor in cattle in relation to the clinical signs of labor and the course of progesterone secretion for the prediction of the calving time].
To evaluate changes in the externally recognizable indications of parturition, the body temperature and progesteroneprofile were examined in 9 Holstein-Friesian heifers and 14 Holstein-Friesian cows in the preparatory phase of parturition. A special external obstetric examination was performed on these animals in the last 263 hours of pregnancy. Furthermore, the vaginal and rectal temperature was measured, and blood samples were taken. Of the blood samples the plasma progesterone concentration was determined. The time of birth could be predicted to be in the next 22 hours on the basis of the relaxation of the broad pelvic ligaments in 52.5% of the cases. A prediction was possible in 43.5% of the cases on the basis of the drop in temperature, and in 91.3% of the animals using the reduction in progesterone levels. Considering the clinical signs of parturition "relaxation of the pelvic ligaments" and a "decrease in temperature", predicting the time of parturition was possible in 65.2% of the animals. In 8.7% of the cases, in which no reduction in the progesterone level below 1.5 ng/ml blood plasma could be seen, the time of delivery could be determined by considering the relaxation of the broad ligaments and the reduction in temperature. A prediction of the time of parturition to be in the next 22 hours was possible for all animals the indicators of parturition.
Klinik für Geburtshilfe und Gynäkologie des Rindes (im Richard-Götze-Haus), Tierärztlichen Hochschule Hannover.
E H
EH
Birgel
E
E
Grunert
J A
JA
Soares
D000818:Animals; D001831:Body Temperature; D002417:Cattle / Q000502:physiology*; D005260:Female; D005544:Forecasting; D007743:Labor, Obstetric / Q000502:physiology*; D008022:Ligaments / Q000502:physiology; D010388:Pelvis; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*
D011374:Progesterone
Das Vorbereitungsstadium der Geburt beim Rind unter Berücksichtigung der klinischen Geburtsanzeichen und des Progesteronverlaufs für die Vorhersage des Geburtstermins.