1965
DOI: 10.1530/jrf.0.0090197
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Volume of Untreated and Ultrasonically-Treated Bull, Boar and Human Spermatozoa Electronically Determined

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Cited by 17 publications
(8 citation statements)
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“…O'Donnell(l969) reported that the semen of the domestic boar and the bull contained small droplets with a modal volume of 9 ym3 and 11 pm3 respectively, while the model volumes of the spermatozoa were 29 pm3 and 19-25 pn-13 respectively. Iversen (1965) quoted modal volumes of 29 pm3 and 23 pm3 for boar and bull spermatozoa respectively. The results reported here are almost the same, being 3 1 pn-13 and 23 pm3 for the modal volumes of boar and bull spermatozoa respectively, with the droplets in boar semen having a modal volume of 10 pm3.…”
Section: Sizementioning
confidence: 99%
“…O'Donnell(l969) reported that the semen of the domestic boar and the bull contained small droplets with a modal volume of 9 ym3 and 11 pm3 respectively, while the model volumes of the spermatozoa were 29 pm3 and 19-25 pn-13 respectively. Iversen (1965) quoted modal volumes of 29 pm3 and 23 pm3 for boar and bull spermatozoa respectively. The results reported here are almost the same, being 3 1 pn-13 and 23 pm3 for the modal volumes of boar and bull spermatozoa respectively, with the droplets in boar semen having a modal volume of 10 pm3.…”
Section: Sizementioning
confidence: 99%
“…Studies on acrosomes released from the head by the use of a cationic detergent (10), have revealed that enzymes resembling those from lysosomes are responsible for the digestion of the zona pellucida surrounding the ovum (11) . In addition, mechanical and enzymatic cleavage techniques have been devised to separate spermatozoan heads from tails (12,13,14), although functional roles for the isolated cell fragments have not been described .…”
Section: Introductionmentioning
confidence: 99%
“…Complete removal of the mitochondrial components of the spermatozoan midpiece has not been achieved previously by any of the mechanical methods developed for dissecting mammalian spermatozoa (12,13) . Chemical dissection of spermatozoa with reducing agents such as DTT, however, allows the fractionation of tails that are not fragmented and that appear to consist of material comprising the flagellar structures themselves .…”
mentioning
confidence: 99%
“…Data on the use of Coulter@ counter for estimation of boar-semen density appear to be limited. Iversen (1965), O'Donnell (1969), and Brotherton (1975) used a Coulter@ counter for counting and sizing boar spermatozoa. Woelders (1990), however, using a Coulter@ counter for assessment of boar sperm concentration, found that the measurements underestimated the concentration when compared with haemocytometer counting.…”
Section: Discussionmentioning
confidence: 99%