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Impact of genetic manipulation.

R W Everett

    Journal of Dairy Science
    |November 1, 1984
    PubMed
    Summary

    Dairy cattle genetic gains are suboptimal. Manipulating reproduction, like embryo splitting, can increase genetic progress by 35% and be profitable within artificial insemination systems.

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    Area of Science:

    • Animal Science
    • Reproductive Biology
    • Agricultural Economics

    Background:

    • Genetic progress in dairy cattle production is significantly below optimal levels.
    • Current reproductive technologies offer limited gains, necessitating innovative approaches.

    Purpose of the Study:

    • To review methods for manipulating dairy cattle reproduction to enhance genetic gains.
    • To evaluate the economic feasibility of reproductive manipulation techniques.
    • To propose a system for increasing genetic gains through embryo splitting.

    Main Methods:

    • Economic evaluation by equating discounted future net income to current expenses to determine break-even costs.
    • Analysis of reproductive techniques including embryo transfer and sexed semen.
    • Presentation of a system for splitting female embryos to create performance-tested female genotypes.

    Main Results:

    • The proposed embryo splitting system can increase annual genetic gains by 35%.
    • Economic analysis indicates potential profitability for reproductive manipulation techniques.
    • The system's success is contingent on integration with artificial insemination and expert geneticist direction.

    Conclusions:

    • Reproductive process manipulation offers a viable strategy to accelerate genetic progress in dairy cattle.
    • Embryo splitting presents a promising method for enhancing genetic gains and herd performance.
    • Strategic implementation within existing systems can ensure the economic success of advanced reproductive technologies.

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