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Related Experiment Videos

Skeletal muscularity and heart function in growing piglets.

R Geers1, G Parduyns, V Goedseels

  • 1Labo Agrarische Bouwkunde, Heverlee, Belgium.

Annales De Recherches Veterinaires. Annals of Veterinary Research
|January 1, 1990
PubMed
Summary

Skeletal muscle development in piglets is linked to heart function. Higher muscle mass correlated with lower ST-elevation and heart rate, indicating potential cardiac changes in growing pigs.

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Area of Science:

  • Animal Science
  • Physiology
  • Veterinary Medicine

Background:

  • Skeletal muscle development varies significantly between different genetic lines of pigs.
  • Understanding the physiological implications of varying muscularity is crucial for animal health and productivity.

Purpose of the Study:

  • To investigate the relationship between skeletal muscularity and cardiac function in growing piglets.
  • To compare electrocardiogram (ECG) parameters and muscle dimensions between piglet lines with high and low skeletal muscularity.

Main Methods:

  • Utilized ambulatory Holter devices to measure electrocardiogram (ECG) parameters over 17 hours in 18 female piglets (9 high muscularity, 9 low muscularity).
  • Employed ultrasound technology to assess longissimus dorsi muscle dimensions (depth, circumference, surface, speed of ultrasound).

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  • Performed statistical analysis to identify significant differences and correlations between muscle and cardiac parameters.

    • Main Results:

    • Significant differences in muscle dimensions (depth, circumference, surface, ultrasound speed) were observed between the high and low skeletal muscularity lines.
    • ST-elevation on the ECG was significantly lower in the high skeletal muscularity group.
    • Lower muscle depth correlated with higher ST-elevation and mean lowest heart rate, and lower ultrasound speed correlated with higher mean frequency rise.

    Conclusions:

    • Growing piglets with higher skeletal muscularity exhibit distinct cardiac function profiles, characterized by lower ST-elevation.
    • A gradual impairment of heart function appears to coincide with increased skeletal muscle development in these animals.
    • These findings suggest a complex interplay between muscle growth and cardiac physiology in developing swine.