Pickett B W, Faulkner L C, Voss J L
J Reprod Fertil Suppl. 1975 Oct(23):25-8.
Season had a pronounced effect upon seminal pH and refractometer 'protein', total carbohydrate, dry weight, total N2 and lactic acid in seminal plasma of first and second ejaculates. In addition, total seminal volume, spermatozoa per ml and per ejaculate, non-protein sulphhydryl and glycerylphosphorylcholine of second ejaculates were also influenced. There was a season difference in the concentrations of lactic acid in spermatozoa from first and in total N2 from spermatozoa in second ejaculates. The effects of season on seminal plasma were greater than those on spermatozoa. Spermatozoa in first ejaculates were less affected by season than those in secons ejaculates. This differential effect on first and second ejaculates was generally true of all seminal characteristics.
季节对首次射精和第二次射精的精液血浆中的精液pH值、折光计“蛋白质”、总碳水化合物、干重、总氮和乳酸有显著影响。此外，第二次射精的精液总体积、每毫升和每次射精的精子数量、非蛋白质巯基和甘油磷酸胆碱也受到影响。首次射精的精子中乳酸浓度和第二次射精的精子中总氮浓度存在季节差异。季节对精液血浆的影响大于对精子的影响。首次射精的精子比第二次射精的精子受季节影响小。对首次射精和第二次射精的这种差异影响在所有精液特征中通常都是如此。
