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The sperm production of adult rams in relation to frequency of semen collection

Published online by Cambridge University Press:  27 March 2009

M. C. Chang
M. C. Chang
Affiliation:
School of Agriculture, Cambridge
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Extract

Many estimates have been made of sperm production in various species, but in most cases examinations have been made infrequently or with irregular intervals between successive collections. Since during a period of sexual rest spermatozoa may accumulate in the epididymis, or with longer periods may undergo disintegration and absorption in the vas and ampulla (Simeone & Young, 1931), the number ejaculated at an particular collection will not necessarily reflect the level of sperm production in the testis. Moreover, there is the possibility that copulation may actually stimulate spermatogenesis. In horses, Chang (1943) found that more sperms were ejaculated if collections were made frequently and at regular intervals. In the present experiments an attempt has been made to determine the effect of frequency of collection upon the sperm production of rams, the collections being taken at regular intervals and for a definite period, in this case ten days.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 35 , Issue 4 , October 1945 , pp. 243 - 246
Copyright
Copyright © Cambridge University Press 1945

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References

REFERENCES

Anderson, J. (1945). The Semen of Animals and its use for Artificial Insemination. Edinburgh: Imperial Bureau of Animal Genetics.Google Scholar
Chang, M. C. (1942). J. Endocrinol. 3, 192.CrossRefGoogle Scholar
Chang, M. C. (1943). J. Agric. Sci. 33, 67.Google Scholar
Simeone, F. A. & Young, W. C. (1931). J. Exp. Biol. 8, 163.Google Scholar