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Related Experiment Videos

Pre-partum leucocytic activity and retained placenta.

J W Gunnink

    The Veterinary Quarterly
    |April 1, 1984
    PubMed
    Summary

    Investigating the leucocyte-cotyledon reaction can predict retained placenta in cows. Cows developing retained placentas show reduced leucocyte activity against cotyledons before calving.

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    Area of Science:

    • Veterinary immunology
    • Bovine reproduction

    Background:

    • Retained placenta is a common postpartum complication in dairy cows.
    • The interaction between maternal leucocytes and placental cotyledons is crucial for normal placental expulsion.

    Purpose of the Study:

    • To investigate the association between the leucocyte-cotyledon reaction and placental expulsion in cows.
    • To determine if leucocyte activity against cotyledons can predict retained placenta before parturition.

    Main Methods:

    • In vitro assessment of leucocyte activity against cotyledon cells.
    • Observation of leucocyte-cotyledon reaction in cows with and without retained placentas.

    Main Results:

    • The in vitro leucocyte-cotyledon reaction was not found to be individual-specific.
    • Cows that developed retained placentas exhibited reduced leucocyte activity against cotyledon chemotactic stimuli.
    • This reduced leucocyte activity was detectable several days prior to parturition.

    Conclusions:

    • Leucocyte activity against cotyledons can be measured in vitro before parturition to predict retained placenta.
    • Reduced leucocyte activity is an early indicator of impending retained placenta in cows.

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