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Seasonal Variation in the Succinic Dehydrogenase Activity of Bovine Spermatozoa

Departments of Agricultural Chemistry,² Animal Husbandry, and Dairy Husbandry University of Missouri, Columbia

ABSTRACT

The effect of season upon the succinic dehydrogenase activity of bovine spermatozoa has been investigated by a manometric method. Succinic dehydrogenase activity of bovine spermatozoa has been found to vary in a manner which was significantly correlated with the mean monthly temperatures as obtained from the local weather bureau. The effect of washing upon the succinic dehydrogenase activity of bull spermatozoa was found to be seasonally dependent, as well. These observations have been discussed in relation to their importance to research in the physiology of reproduction, and to the application of reduction tests as a measure of semen quality.

¹ This investigation was supported in part by a research grant (G-3180) from the Division of Research Grants, National Institutes of Health, Public Health Service.

² Missouri Agricultural Experiment Station, Journal Series No. 1644.