Improvement of Sperm Motility of Rainbow Trout (Oncorhynchus mykiss W., 1792) by Supplementation of L-Arginine

In this study, the effect of supplementing amino acid-precursor of nitric oxide (NO) L-arginine wereexamined on sperm motility of rainbow trout Oncorhynchus mykiss. Different concentrations [0 mM(Control), 1 mM, 2 mM, 4 mM and 8 mM] of L-arginine were used in the study. To assess the effectson percentage of motile sperm and longevity, L-arginine was added to activation medium containingNaCl (52 mM). The higher L-arginine concentration (4mM) has promoting-effect on sperm motility.The treatments containing L-arginine caused significant effect on percentage of motile sperm andlongevity. Overall, the findings of the present study indicated that supplementation of L-argininemay have improving effects on sperm motility of rainbow trout.