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Related Experiment Videos

Serum alkaline phosphatase activity in beef cattle

M Hidiroglou, B K Thompson

    Annales De Recherches Veterinaires. Annals of Veterinary Research
    |January 1, 1980
    PubMed
    Summary

    Serum alkaline phosphatase (SAP) levels in beef cattle did not decrease with hypomagnesaemia. Calf SAP levels were higher than cows and correlated with growth, but not consistently with magnesium levels.

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    Area of Science:

    • Veterinary Medicine
    • Animal Science
    • Biochemistry

    Background:

    • Hypomagnesaemia is a serious condition in beef cattle, potentially impacting various physiological markers.
    • Serum alkaline phosphatase (SAP) is an enzyme with diverse biological roles, and its fluctuations can indicate metabolic changes.
    • Understanding SAP's relationship with magnesium levels and growth is crucial for herd health management.

    Purpose of the Study:

    • To investigate the relationship between serum alkaline phosphatase (SAP) levels and hypomagnesaemia in beef cows and calves.
    • To explore other factors influencing SAP levels, including season, age, growth, and serum phosphorus.

    Main Methods:

    • A one-year study involving 72 beef cows and their calves in Northern Ontario.
    • Regular monitoring of serum alkaline phosphatase (SAP) and serum magnesium levels.
    • Analysis of SAP levels in relation to time, age (cow vs. calf), growth patterns, and serum phosphorus.

    Main Results:

    • No correlation was found between falling serum magnesium levels and decreased SAP during hypomagnesaemia.
    • Calf SAP levels were consistently higher than cow SAP levels, with the difference narrowing later in the season.
    • Calf SAP showed a relationship with growth patterns, and higher maternal SAP tended to correlate with faster calf growth. Pre-calving SAP changes were negatively correlated with calf weight gain. Calf SAP and serum phosphorus showed moderate correlation (r ≈ 0.4).

    Conclusions:

    • Serum alkaline phosphatase (SAP) is not a reliable indicator for monitoring hypomagnesaemia in beef cattle.
    • SAP levels in calves are influenced by growth and potentially maternal factors, and show a moderate association with serum phosphorus.
    • Further research could elucidate the specific roles of SAP in bovine growth and metabolism.

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