Fachbereich Veterinärmedizin



    Effect of various degrees of dystocia in dairy cattle on survival and production (2005)

    Tenhagen, B. A.
    Helmbold, A.
    Heuwieser, W.
    6th Middle European Buiatrics congress
    Krakau/Polen, 01. – 04.06.2005
    Achievements and Prospects of ruminant medicine
    Pulawy, PL: National Veterinary Research Institute, 2005 — S. 310–314
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    Abstract / Zusammenfassung

    It was the objective of this study to analyse the effect of various degrees of
    dystocia on production and survival of dairy cows.

    A case control study was carried out including 261 calvings that were attended
    by a veterinarian of a practice in Schleswig-Holstein, Germany. Cases were
    classified into three categories, namely mild dystocia (MD), severe dystocia
    (SD) and caesarean section (CS). For every case a control was chosen from the
    same farm and matched for calving month, breed and parity. Cases and controls
    were compared concerning their risk of removal from the herd, the probability
    and timing of conception, their milk production data and calf survival.

    Mild cases of dystocia had only limited effects on production data, survival of
    the cows and fertility. Compared to controls, more SD (28.1 vs 25.8 %) and CS
    (30.3 vs. 15.8 %) cows were culled until 200 days in milk and less cows
    conceived within the same time span (SD: 48.3 vs. 61.8 %; CS: 48.7 vs. 69.7
    %). Apart from a mild depression on milk yield of the first milk test day, there
    were no obvious effects of severe cases of dystocia on test day production while
    CS cows had a significantly lower production than their controls during the first
    months of lactation. The proportion of dead calves was significantly higher in
    cows with dystocia compared to their controls. However, the difference to the
    controls was significantly lower in CS cows than in the other two groups.

    Economically, the difference between cows with dystocia and their controls
    increased with the degree of dystocia (MD 58.68 €; SD 130.51 €; CS 236.61 €).
    The data underline the importance of prevention of dystocia by management and
    breeding for the economics of dairy farms.