However, a decrease of the total concentration of
+ in blood serum by 61.1% was observed in
animals with ovarian dysfunction compared with the
control. The lowest level of the content of S-nitrosothiols was also characteristic for them. It is difficult
toassess the physiological effect of reduced nitrogen
oxide production in cows with ovarian dysfunction.
However, on the basis of the available data that nitrogen
oxide is able to slow the aging process of egg cells [9],
we can assume that the low nitrogen oxide content in
infertile animals involves disturbance of the process of
ovo- and folliculogenesis and gonadal dysfunction. We
can therefore assume that such a free radical as nitrogen
oxide is one of the components of a complex multilevel
system regulating the reproduction function of mammals.