Influence of pregnancy on diurnal and seasonal changes in glucose level and activity of FDPA, A1AT and AspAT in mares

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Abstract

  • 1.

    1. The diurnal changes in the glucose level and in activity of FDPA, A1AT and AspAT in four pregnant standard-bred mares were studied.

  • 2.

    2. As a control four barren mares, were kept and examined in the same conditions.

  • 3.

    3. Blood samples were taken every 4hr for one day, each month, throughout pregnancy, or one year.

  • 4.

    4. A diurnal rhythm in activity of A1AT and AspAT in barren mares was found. The pregnancy masked diurnal rhythm in activities of both transaminases.

  • 5.

    5. No diurnal rhythm in glucose level and FDPA activity in both groups of mares was observed.

  • 6.

    6. Seasonal cyclicity was found in all indices studied, in both groups of mares.

  • 7.

    7. The pregnancy did not abolish cyclicity in parameters studied but modified their behaviour-causing a shift of acrophases (glucose, FDPA, AspAT) and lowering the amplitudes (FDPA, A1AT, AspAT).

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  • Diseases of the Musculoskeletal System

    2004, Equine Internal Medicine: Second Edition
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