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Studies on the transaminase activity of bull's semen. I. Glutamate-pyruvate-transaminase activity of spermatozoa and seminal plasma prior to and after freezing at -196 deg C

, : Studies on the transaminase activity of bull's semen. I. Glutamate-pyruvate-transaminase activity of spermatozoa and seminal plasma prior to and after freezing at -196 deg C. Comptes Rendus de l' Academie Agricole Georgi Dimitrov 6(3): 271-272

In 18 ejaculates collected from 13 Bulgarian Brown bulls, the glutamic-pyruvic phosphatase activity was 17.2 units in spermatozoa and 13.0 units in seminal plasma before freezing, and 12.6 and 11.6 units resp. after freezing to -196 deg C. Differences between the 2 activities before freezing and between the values before and after freezing were significant.


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