Publication: Effect of ß-glucan from Euglena gracilis as an antioxidant on goat semen cryopreservation
Date
Authors
Yilmaz, Muhammed Mustafa
Huraydin, Oguzhan
Cimen, T
Aktar, A.
Authors
Yilmaz, M. M.
Huraydin, Oguzhan
Çimen, T.
Sonat, F. Ak
Aktar, A.
Gokce, E.
Karakci, D.
Sengul, E.
Soylu, M. K.
Nur, Z.
Advisor
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Hellenic Veterinary Medical Soc
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Abstract
This study aimed to determine the influence of different doses of beta-glucan on post-thaw spermatological parameters, lipid peroxidation, and total antioxidant activity of buck semen. In the non-breeding season, semen was collected from bucks twice weekly. After then, ejaculates were pooled and divided into four equal aliquots: beta-glucan concentrations of 1 mM (beta G1), 2 mM (beta G2), and 4 mM (beta G4), and a control group without antioxidants. Each sample group was diluted for cryopreservation using a dilution method involving two steps. The experimental groups were then evaluated for several parameters including sperm motility, plasma membrane functional integrity [hypoosmotic swelling test (HOST)], damaged acrosome rate [FITC-Pisum sativum agglutinin (FITC-PSA)], DNA integrity [terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL)], mitochondrial membrane potential using JC-1, evaluation of lipid peroxidation, and determination of total antioxidant activity. The post-thaw motility and plasma functional integrity of the control group were significantly lower than those values in the beta G groups (P < 0.05). Although the numerically greatest acrosome damage was detected in the control group, it was only statistically different from beta G1 and beta G4 (P<0.05). While the DNA fragmentation rate of the control group was higher than beta G4 group (P<0.05), it was similar to beta G1 and beta G2 groups (P>0.05). There was no statistical difference among all the groups regarding low mitochondrial membrane potential, MDA, and TAC rates. In line with our results, supplementation of 1mM, 2 mM and 4 mM beta-glucan to freezing extender improves the post-thaw spermatological characteristics of goat semen.
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Keywords
Oxidative organ injury, Beta-glucan, Rheological properties, Lipid-peroxidation, Sperm function, Avena-sativa, Spermatozoa, Stress, Glutathione, Additives, Goat, Ss-glucan, Mitochondrial membrane potential, Dna fragmentation, Antioxidant activity, Science & technology, Life sciences & biomedicine, Veterinary sciences