The Male Rabbit. VI. Effects of Ejaculation and Season on Testicular Size and Function

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Abstract
QUANTITATIVE studies of testicular histology for bulls, rams and rabbits ejaculated less frequently than once daily were summarized by Amann (1970). He concluded that there was no evidence to support the concept that ejaculation altered the rate of sperm production. However, frequently copulating male rats were found to have heavier accessory reproductive organs than sexually rested males (Drori and Folman, 1964; Folman and Drori, 1966; Herz, Folman and Drori, 1969) although testicular weight was not significantly different. Lambiase and Amann (1969) found no significant differences in paired testicular weight for rabbits collected twice every other day as compared to sexually rested rabbits. Nevertheless, it is possible that the frequency of ejaculation or the duration of treatment in their experiments was insufficient to elicit testicular responses. Amann (unpublished) found the mean paired testicular weight for 27 rabbits ejaculated once daily for 11 to 21 days was heavier (P <.05) than that for sexually rested litter-mates (6.65 vs. 5.17 g). Copyright © 1972. American Society of Animal Science . Copyright 1972 by American Society of Animal Science.

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