Effect of nutraceutical supplementation on semen quality in stallions.

Abstract

The use of reproductive biotechnologies in equine practice has shown that some stallions are subfertile, so ways to improve fertility have been sought. This study aimed to evaluate the effect of nutraceutical supplementation on improving semen quality in Quarter Horse stallions. Semen from six Quarter Horse stallions was assessed for 4 months every 20days using the computer-assisted semen analysis system. They were evaluated for 60days before supplementation; then, the same stallions were re-evaluated for 60days with nutraceutical supplementation (30g/day). Volume showed no significant difference (p>0.05) with nutraceuticals. Sperm concentration (10x6 ) was significantly higher with supplementation (339.4±17.5 sperm/mL) than without supplementation (224.6±19.9). Sperm abnormalities (%) were significantly (p<0.05) lower with supplementation (14.3±0.6) than without supplementation (19.1±0.4). Sperm kinematic parameters, total motility (TM), progressive motility (PM), rectilinear velocity (VSL), the velocity of the trajectory (VAP) and curvilinear velocity (VCL), were significantly better with supplementation (p<0.05). Based on the results, it is concluded that nutraceutical supplementation improved semen parameters in Quarter Horse stallions.