Number of Spermatozoa in the Different Parts of the Reproductive Tract of the Bull

Bialy, G.; Smith, Vearl R.

doi:10.3168/jds.s0022-0302(58)91163-9

Cited by 16 publications

(11 citation statements)

References 7 publications

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“…Zeltobrjuh et al (1966) found the motility and survival lower for epididymal than for ejaculated sperm of rams, When the epididymal sperm obtained via a fistula was mixed with seminal plasma, as it is during ejaculation, the motility increased. Contrary to this, Bennett and Dott (1966) The morphology of sperm from the cauda epididymis should be similar to ejaculated sperm because the caud~ is the main site of sperm storage and is the source of the sperm included in an ejaculate (Bialy and Smith 1958). However, this is true only if the seminal plasma has no influence on the morphology of the cells.…”

Section: Sperm Characteristicsmentioning

confidence: 82%

Evaluation of Epididymal Sperm by the Cannulation Technique and the Effects of In Vivo Storage in Angus Bulls

Deutscher

Wells

Battaglia

1974

Journal of Animal Science

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Section: Sperm Characteristicsmentioning

confidence: 82%

Evaluation of Epididymal Sperm by the Cannulation Technique and the Effects of In Vivo Storage in Angus Bulls

Deutscher

Wells

Battaglia

1974

Journal of Animal Science

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“…With regard to the origin of the sperms, the reader is referred to the experi¬ ments of Bialy & Smith (1958). They found in slaughtered bulls 418 IO6,…”

Section: Discussionmentioning

confidence: 99%

Ageing of Bull Sperms at the End of the Passage Through the Epididymis

Groot¹

1961

Reproduction

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The ageing of sperms during passage through the epididymis was investigated in four pairs of monozygous twin bulls, which served twice, once a week, during 4 weeks. Immediately after service, motility was estimated and sperms were stained with eosin anilin blue (pH 6-7) both at 37°C and at 15°C , and thus without and with cold shock. From each sample at each temperature, two smears were prepared. On each smear, a total of fifty sperms was counted, equally distributed over the diagonals and the centre. The two smears were divided between two observers. The differentiation was : white and halfgrey (pooled afterwards), half-red and red heads of sperms. The observers showed no differences. The pairs of bulls and the ejaculates at the two temperatures were different for the white plus half-grey and the half-red sperms, reflecting a genetic variability and a higher sensitiv¬ ity to cold shock of the first ejaculate, respectively. The lower frequency of white plus half-grey sperms was associated with a higher frequency of half-red sperms. In addition, the bulls varied from week to week for all classes of sperms and the bulls (within pairs) had a different proportion of red cells in the ejaculates, the proportion in one pair being consider¬ ably higher in the first ejaculate for one of the bulls.The comparison of the staining result with motility demonstrated that it is likely that in the first as well as in the second ejaculate a recent loss of motility occurred without a corresponding staining at 37°C. In the first ejaculate, these recently dead sperms are stained at 15°C. A gradual ageing process of sperms during passage through the epididymis is suggested, which is already effective in the cauda epididymidis.

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“…A normal single seminal ejaculate usually contains many more spermatozoa than are found in the vas deferens, but fewer than in the epididymis (Chang, 1946;Chang & Sheaffer, 1957;Baily & Smith, 1958; unpublished observa¬ tions of the authors). The majority of spermatozoa appearing in ejaculates must then be transported the entire length of the vas deferens in a relatively short period of time just prior to or at ejaculation.…”

Section: Introductionmentioning

confidence: 99%

Influence of Drugs Affecting the Autonomic System on Seminal Ejaculation

Dziuk¹,

Norton²

1962

Reproduction

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Summary. Rabbits and boars were used to study the effect on the ejaculation process of various drugs known to affect the autonomic nervous system. Of those tried, only atropine had an effect, causing linear reduction, as the dose increased, of the logarithm of the number of spermatozoa ejaculated by rabbits. In the boar, the volume ofsemen was reduced, but at the dose levels employed total spermatozoa per ejaculate changed little. This suggests that the male accessory sex glands are partly controlled by the parasympathetic system and that this system also has an influence on spermatozoon movement from the epididymis through the vas deferens.

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Number of Spermatozoa in the Different Parts of the Reproductive Tract of the Bull

Cited by 16 publications

References 7 publications

Evaluation of Epididymal Sperm by the Cannulation Technique and the Effects of In Vivo Storage in Angus Bulls

Evaluation of Epididymal Sperm by the Cannulation Technique and the Effects of In Vivo Storage in Angus Bulls

Ageing of Bull Sperms at the End of the Passage Through the Epididymis

Influence of Drugs Affecting the Autonomic System on Seminal Ejaculation

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