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Related Experiment Videos

[ECG telemetry in cows].

I Kostov, Ia Iliev

    Veterinarno-Meditsinski Nauki
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Electrocardiogram (ECG) telemetry revealed distinct cardiac activity patterns in cows. Pregnant and new-calved cows showed significant T wave shape changes compared to lactating dairy cows.

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    Area of Science:

    • Veterinary Medicine
    • Cardiology
    • Animal Physiology

    Background:

    • Cardiac activity monitoring is crucial for assessing bovine health.
    • Understanding electrocardiographic (ECG) parameters across different physiological states is essential for dairy management.

    Purpose of the Study:

    • To investigate and compare cardiac activity using ECG telemetry in pregnant, new-calved, and lactating cows.
    • To identify specific ECG waveform characteristics associated with these reproductive and lactation stages.

    Main Methods:

    • Utilized ECG telemetry to monitor cardiac activity in 245 cows.
    • Categorized cows into three groups: pregnant (48), new-calved (112), and lactation period (125).
    • Analyzed key ECG parameters including heart rate, P wave, R wave, and T wave morphology.

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    Main Results:

    • Heart rates were similar across groups: pregnant (83.3 min-1), new-calved (83.7 min-1), and lactating (86.3 min-1).
    • Standard ECG elements (P, R waves, intervals) showed comparable values across all groups.
    • Significant alterations in T wave shape, often becoming diphasic, were observed in 45% of pregnant and new-calved cows versus 9.6% of lactating cows.

    Conclusions:

    • ECG telemetry is effective for evaluating bovine cardiac function during different physiological states.
    • The diphasic T wave is a notable indicator of physiological stress or adaptation in pregnant and recently calved cows.
    • These findings contribute to understanding normal and altered cardiac electrophysiology in dairy cattle.