Performance and Semen Traits of Friesian Bulls Administrated with Free L-Carnitine as Metabolic Regulator

Effect of Treatment With L-Carnitine, Co-Enzyme Q10 and Zinc-Methionine as Stimulants on Semen Quality and Some Blood Parameters of Damascus Goat Bucks During Summer Season of Egypt.

“…Moreover, Liu et al (2020) observed that 40 mg Zn/kg DM (zinc sulfate) in Cashmere goats during the breeding season increased the semen volume and total sperm output compared to those of the control. Similarly, the results obtained by Abdel-Khalek et al (2015) showed significant (P<0.05) increase in ejaculate volume, sperm motility, live sperm percentage, sperm concentration and total sperm output of Friesian bulls orally administered daily of free L-carnitine at level of 2 g/head /day for 3 months for 3 months. Also, Ghorbani et al (2018) Carnitine at a dose of 140 mg/kg.…”

“…Values of pulse rate (beat/min) and respiration rate (beat/min) were not significantly affected by treatment with L-carnitine, Coenzyme Q10 and Zinc-methionine. Abdel-Khalek et al (2015) indicated that farm animals undergo from heat stress when they expose to high environmental temperature through summer months, especially during June, July and August.…”

“…Inside a sperm cell, Lcarnitine transports fatty acids to the mitochondria, where they undergo beta-oxidation leading to the generation of metabolic energy needed by the sperm cells for their progressive movements (Jeulin et al 1987). Moreover, The L-carnitine increases semen ejaculate volume /ml, sperm motility, live sperm percentage, sperm concentration and total sperm output in buck rabbits (Seleem et al2006 ;El-Tohamy et al 2012;Abdel-Hamed et al 2014), in Friesian bulls (Abdel-Khalek et al 2015 ) and in Boars (Lee et al 2016 andYang et al 2020 ).…”

Reproductive Performance of Egyptian Buffalo Bulls Administrated With N-Acetylcysteine, L-Carnitine, or Their Combination

“…Also, oral treatment with NAC (600 mg daily) was associated with significant improvement in sperm motility with idiopathic infertility in human (Ciftci et al, 2009). Friesian bulls, high-quality semen was produce by oral dose of 2 g/h/ L-C for 2 months (Abdel-Khalek et al, 2015), and increased sperm motility and pregnancy rate in human (Lenzi et al, 2004;Balercia et al, 2005). Also, addition of L-C on semen extender of cryopreserved semen improves sperm activity (Banihani et al, 2014;Hussein, 2018).…”