Abstract
EXPERIMENTAL work on many mammals, including dogs, rabbits, cats, rams and bulls, has shown that in those species with the testicles enclosed in an external scrotum, there is normally a significant temperature difference between the testicles and the body. This temperature difference varies in different species from 1° to 8° C. and is essential for the proper functioning of the testicles. If the temperature of the testicles is artificially raised to body temperature, sperm production is greatly lowered and the animals concerned may to all intents and purposes become sterile. There is, of course, no diminution of desire.
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References
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PINCHER, H. Effect of Temperature on Fertility of the Male. Nature 155, 272 (1945). https://doi.org/10.1038/155272a0
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DOI: https://doi.org/10.1038/155272a0
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