Abstract
ABOUT 40 years ago the effect of vitamin A deficiency on male sexual organs was investigated in rats by Wolbach and Howe1 and Gross2, and in guinea-pigs by Wolbach and Howe3. Later the influence of this vitamin on reproduction was investigated in various species of domestic animals, for example, in bulls by Hodgson et al.4 and Madsen et al.5,6, and in rams by Lindley et al.7, but until I reported my investigations8, it would seem that boars had not been examined. Termination—or a marked reduction—of the spermatogenesis as a consequence of the A-avitaminosis characterized all findings in the species of animal examined. It was demonstrated in these experiments that the administration of vitamin A to an A-avitaminotic boar resulted in complete normalization of the spermatogenesis within 3 months.
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References
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PALLUDAN, B. Direct Effect of Vitamin A on Boar Testis. Nature 211, 639–640 (1966). https://doi.org/10.1038/211639a0
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DOI: https://doi.org/10.1038/211639a0
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