Acta Vet. Brno 2007, 76: 595-600

Effect of L-Carnitine Supplementation on Boar Semen Quality

E. Jacyno1, A. Kołodziej1, M. Kamyczek2, M. Kawęcka1, K. Dziadek2, A. Pietruszka1

1Department of Pig Breeding, University of Agriculture, Szczecin, Poland
2National Research Institute of Animal Production, Kraków, Poland

Received February 2, 2006
Accepted October 2, 2007

The effect of addition of L-carnitine on boar semen quality was studied in 5 Pietrain boars at age 1.5 - 2.0 years. The boars received 500 mg of L-carnitine per day for 5 weeks. During this period, their ejaculates were collected once a week and evaluated for quality. The control ejaculates had been collected before the application of L-carnitine. It was found that the addition of L-carnitine to the boars' feed had a positive effect on the quality of boar semen. The total ejaculate volume and sperm-rich fraction volume increased by 11% and 10%, respectively; the total ejaculate sperm count increased by 11.5% (P < 0.05). Also, the number of spermatozoa with major and minor morphological changes decreased and seminal plasma activity of AspAT was significantly reduced (P < 0.01). Sperm concentration and motility, as well as normal acrosome sperm percentage, did not increase considerably. The positive effect of L-carnitine on boar semen quality was observable as early as after one week of its application.