Evaluation of linoleic acid on lipid peroxidative/antioxidative parameters, motility and viability of rooster spermatozoa during cold storage
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Sustainable reduction in semen quality due to detrimental effects of primary and secondary peroxidative products was occurred during liquid storage. The objective of the current experiment was to explore the influence of bovine serum albumin conjugated linoleic acid (LA) on the rooster spermatozoa routine tests and lipid peroxidative/antioxidative levels stored at 4 °C over 48 h. For this purpose, collected ejaculates (≥ 80% progressive motile spermatozoa) pooled and extended with the phosphate buffer medium without (control) or enriched with different amounts of LA (0.125, 0.25 or 0.50 mM). Contents of total antioxidant status (TAS) and thiobarbituric reactive substances (TBARS) were measured separately in the medium and spermatozoa, as well as percent of viability and motility at 0, 24 and 48 h intervals. Viability was not affected by treatment during the study intervals (P > 0.05). While, higher motility was recorded in LA 0.50 mM group (77.98 ± 1.89 and 57.02 ± 2.45) compared to the control group (68.78 ± 1.29 and 45.09 ± 1.86) at 24 and 48 h, respectively (P < 0.03). Amounts of TBARS in medium and spermatozoa were lower in LA 0.25 and 0.50 groups compared to the control at 48 h (P < 0.01). Moreover, TAS levels of medium and spermatozoa were lower in control samples compared to LA treated groups at 48 h (P < 0.03). Because of the ability of the LA to lowering the quantities of lipid peroxidation index and improving motility especially at 0.5 mM levels, it can be proposed as an additive during liquid storage of rooster semen.
KeywordsLipid peroxidation Linoleic acid Rooster Spermatozoa
The authors wish to thank all personnel for their technical support during this work.
The current study was supported by the Research Deputy of the Urmia University (D10-485).
Compliance with ethical standards
The experimental procedure carried out on the roosters for semen sampling was approved by Animal Care Committee of the Urmia University.
Conflict of interest
The authors declare that they have no conflict of interest.
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