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Related Experiment Videos

Breeding programs of dairymen selecting Holstein sires by computer.

M L McGilliard, J S Clay

    Journal of Dairy Science
    |March 1, 1983
    PubMed
    Summary

    MAXBULL, a computerized program, helps dairy farmers select sires to meet breeding goals and maximize milk production. It optimizes sire selection based on predicted differences for milk, fat, and type traits, exceeding industry averages.

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    Area of Science:

    • Animal Science
    • Dairy Cattle Breeding
    • Quantitative Genetics

    Background:

    • Dairy farmers aim to improve herd genetics through sire selection.
    • Meeting specific breeding goals for milk production, fat percentage, and type traits is crucial.
    • Optimizing sire selection requires advanced tools to balance multiple genetic objectives.

    Purpose of the Study:

    • To introduce and evaluate MAXBULL, a computerized linear program for sire selection.
    • To determine the effectiveness of MAXBULL in helping dairymen achieve genetic goals.
    • To maximize the weighted average Predicted Difference for milk production.

    Main Methods:

    • Utilized a computerized linear program (MAXBULL) for sire group selection.
    • Defined dairymen's goals for Predicted Difference fat percent, type traits, and net superiority.
    • Analyzed associated Predicted Difference values for milk, fat, and dollars.

    Main Results:

    • MAXBULL successfully selected sire groups to meet or exceed dairymen's goals.
    • Selected sires exceeded averages of available artificial insemination sires.
    • Predicted Difference fat percent and price were key factors influencing milk yield optimization.

    Conclusions:

    • Computerized sire selection programs like MAXBULL can effectively meet diverse dairy breeding objectives.
    • Sire selection strategies vary based on the number of organizations utilized.
    • Predicted Difference fat percent and price significantly impact milk production goals.

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