Igor VOJTIC
pp. 51-54
ABSTRACT
In this study some of biochemical constituens of Simmental bull (n=31) seminal plasma were deterimined using spectophotometric analysis for asparte-amino-transferase (AST), alanine-amino-transferase (ALT), alkaline phosphatase (ALP), adenosine-triphosphate (ATP), fructose (FRU) and Citrate (CIT). The fertility of bulls (n= 18) was measured by non-retun rate 90 after insemination (NR) with deep frozen semen in strows with 6×106 of spermatozoa . There was significant positive correlation between NR and ALP (0.725, P=0.00147) and significant negative correlation between NR and AST (-0.659, P= 0.00554) and FRU (-0.562, P= 0.0153), respectively. It is quite evident that inseminations using ejaculates with high activity of ALP (> 3530 U/L) results in better NR (69% vs. 65%, P=0.028). However, biochemical complexity od seminal plasma attemps to perform such simple correlations among seminal plasma components and NR are likely to produce inconsistent results.
Key words: bovine, bull, seminal plasma, alkaline phosphatase, non-return rate
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