Zinc and magnesium in bull and boar spermatozoa

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Abstract
Mean .+-. SEM [standard error of the mean] concentrations (nmol/108 cells) of Zn and Mg in bull spermatozoa were 30.6 .+-. 6.6 and 119 .+-. 28.8, respectively. Corresponding values for boar spermatozoa were 16.9 .+-. 1.98 and 57.1 .+-. 4.3. Bull spermatozoa washed twice in a standard buffered salt solution, pH 7.75, lost 72.6% of their Zn and 46.5% of their Mg. Boar spermatozoa lost 40% of Zn and 18% of Mg, respectively. Albumin addition (4% final concentration) to the washing solution did not increase the ion loss from bull spermatozoa, but increased the loss of Zn and Mg from boar spermatozoa to 52% and 41%, respectively.