Abstract
Williams and Savage1 introduced a semen examination method for the evaluation of the seminal micropathology in bulls, the results of which in the hands of the experienced examiner are of definite value in sterility work, especially in classifying the severity of testis degeneration and testis hypoplasia. Later investigators have used slightly different systems for classifying abnormal sperm forms, but most workers have included abnormalities of the middle piece of the sperm in their counting as rather rare forms2–4.
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References
Williams, W. W., and Savage, A., Cornell Vet., 15, 353 (1925).
Lagerlöf, N., Acta Path. Microbiol. Scand., Supp., 19 (Uppsala, 1934).
Blom, E., “On the Evaluation of Bull Semen”, Diss. (Copenhagen, 1950).
Bretschneider, L. H., Proc. Kon. Ned. Akad. v. Wetensch., 58/4 (1955).
Blom, E., Fertility and Sterility, 1, 176 (1950).
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BLOM, E. A Rare Sperm Abnormality: ‘Corkscrew-sperms’ associated with Sterility in Bulls. Nature 183, 1280–1281 (1959). https://doi.org/10.1038/1831280a0
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DOI: https://doi.org/10.1038/1831280a0
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