Abstract
RECENT experiments have shown that in bulls injected with radioactive phosphate (phosphorus-32), 48–50 days elapse from the moment of injection to the time when radioactive phosphorus appears in the deoxyribonucleic acid of ejaculated spermatozoa1,2. This is the period of time required for the formation of spermatozoa in the testes and their passage through the epididymides. The purpose of the present study was to ascertain whether and to what extent this period can be influenced by varying the frequency of ejaculations.
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References
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Koefoed-Johnsen, H. H., Roy. Vet. and Agric. Coll., Sterility Res. Inst. Ann. Rep., 18 (Copenhagen, 1958).
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KOEFOED-JOHNSEN, H. Influence of Ejaculation Frequency on the Time required for Sperm Formation and Epididymal Passage in the Bull. Nature 185, 49–50 (1960). https://doi.org/10.1038/185049a0
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DOI: https://doi.org/10.1038/185049a0
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