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Selenium and reproductive function in yearling Angus bulls

E C Segerson, B H Johnson

    Journal of Animal Science
    |August 1, 1980
    PubMed
    Summary
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    Supplemental selenium increased tissue selenium levels in Angus bulls but did not affect sperm viability or concentration. This study evaluated the impact of selenium (Se) supplementation on bull reproductive parameters.

    Area of Science:

    • Animal Science
    • Reproductive Biology
    • Nutritional Biochemistry

    Background:

    • Selenium (Se) is an essential trace element crucial for various physiological functions, including reproduction.
    • Understanding the impact of selenium supplementation on male reproductive health in livestock is important for optimizing breeding programs.

    Purpose of the Study:

    • To investigate the effect of supplemental selenium on selenium concentrations in tissues and semen of yearling Angus bulls.
    • To evaluate the influence of selenium supplementation on various spermatozoa parameters, including viability and concentration.

    Main Methods:

    • Twenty-four yearling Angus bulls were divided into control and selenium-supplemented groups.
    • Selenium supplementation involved initial and interval intramuscular injections over 150 days.

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  • Serum, tissue (kidney, liver, seminal vesicle, testes, epididymides), and semen samples were analyzed for selenium content. Spermatozoa parameters were assessed post-thawing.

    • Main Results:

    • Selenium supplementation significantly increased selenium concentrations in serum and various tissues (kidney, liver, seminal vesicle, testis, epididymides).
    • Selenium levels in semen (whole semen, supernatant, sperm pellet) were also elevated in supplemented bulls.
    • No significant differences were observed in sperm viability, sperm concentration in testes or epididymides between control and selenium-treated groups.

    Conclusions:

    • Selenium supplementation effectively increases selenium deposition in tissues and semen of Angus bulls.
    • Despite increased tissue selenium, supplementation did not demonstrate a positive impact on sperm viability or concentration in this study.
    • Further research may be needed to determine optimal selenium levels for reproductive benefits in bulls.