Biochemical studies on the semen of domestic animals; On the chemical composition of seminal plasma of goats. I

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Fructose and ascorbic acid in the seminal plasma of eight goats (6 Saanen breed and 2 Native breed) were measured through a year to examine the seasonal variation and in relation to spermatogenesis.<BR>1. The seasonal variation of fructose concentration showed some difference between Saanen and Native breeds. In Saanen breed (5 out of 6 goats) it increased during breeding season while decreased during non-breeding season.<BR>A noticeable increase was recognized during October-January and while the extreme decrease was observed during May-July. March-April showed falling while August-September showed rising tendency.<BR>2. In Native breed having no breeding season in the female, there was no seasonal variation in the concentration of fructose, showing almost constant value through a year.<BR>3. The concentration of ascorbic acid tended to increase during February-June, and decrease during July-January.
日本繁殖生物学会の論文