Effect of fat-soluble vitamin supplementation on the motility and kinematics patterns in boar semen ; Efecto de la suplementación con vitaminas liposolubles sobre los patrones de movilidad y cinética en semen de verraco

Vitaminic supplementation is important to optimize the boar reproductive potential. The study was aimed to evaluate the sperm quality of boar ejaculates supplemented with fat-soluble vitamins and the effect of the conservation in seminal samples through time. Four boars of a commercial terminal line (Duroc*Pietrain) with average age of 25.3±8.8 months and known fertility, were used. Semen samples were collected in the morning, once per week. Animals were randomly allotted to two groups and fed either of the two treatment for 16 weeks: (1) control treatment (TC without supplementation of fat-soluble vitamin), (2) treatment containing 100% fat-soluble vitamin supplementation (TS) based on fat-soluble vitamin supplementation (A, D3, E).Differences were found (P<0.05) in the total motility of the ejaculate for treatment that received vitaminic supplementation (TS) (85.11±0.79%), regarding the control treatment (TC) (74.39±0.79%). The supplemented animals with vitamins showed higher progressive motility(P<0.05), regarding to TC (79.84±0.80%; 69.63±0.80%, respectively). No differences were found (P>0.05) in total motility and progressive motility values at 24 and 48 hours, but after the 96 hours of conservation differences were found (P<0.05) for both variables. Results of TS regarding TC in the curvilinear velocity (VCL), straight-line velocity (VSL), and linearity of forward progression (LIN) variables were higher (P<0.05), during the 24h of conservation. The ejaculates conservation could contribute to the efficiency of management in the pig farms and can be affected by multiple factors where the supplementation and adequate nutrition could contribute to the seminal quality of boar