Spermatogenic Capacity of the Male Bovine. I. A Measurement Technique

Louis J. Boyd, N.L. Van Demark

Journal of Dairy Science · 1957 · 28 citations · 1 references

DOIFull text

Open access

Concepts

Abstract

Nearly 6 billion sperm, plus 9. billion for each added day between partially exhaustive collections, were produced by six two-year-old Holstein bulls, in tests of the sperm available for ejaculation at intervals of one to seven days. A depleted sperm supply was restored in seven days, and extending the time to 30 days between partial exhaustions resulted in no more spermatozoa. The correlation between testis-epididymis weight and its dimensions was r:.94; between testes-epididymides weight and number of sperm ejaculated, r=.80, and between seminal vesicles and semen volume, r=.73. Editor.

References

1