Differences in the ability of spermatozoa from individual boar ejaculates to withstand different semen-processing techniques

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• 作者：Inma Parrilla ; David del Olmo ; Laurien Sijses ; Marí ; a J. Martinez-Alborcia ; Cristina Cuello ; Juan M. Vazquez ; Emilio A. Martinez ; Jordi Roca ; ^roca@um.es
• 关键词：Pig ; Semen ; Liquid storage ; Cryopreservation ; Sex sorting
• 刊名：Animal Reproduction Science
• 出版年：2012
• 期刊代码：8_03784320
• 类别：abs
• 出版时间：May, 2012
• 卷：132
• 期：1-2
• 页码：66-73
• 文件大小：280 K

摘要

The present study aimed to evaluate the ability of spermatozoa from individual boar ejaculates to withstand different semen-processing techniques. Eighteen sperm-rich ejaculate samples from six boars (three per boar) were diluted in Beltsville Thawing Solution and split into three aliquots. The aliquots were (1) further diluted to 3 脳 10⁷ sperm/mL and stored as a liquid at 17 掳C for 72 h, (2) frozen-thawed (FT) at 1 脳 10⁹ sperm/mL using standard 0.5-mL straw protocols, or (3) sex-sorted with subsequent liquid storage (at 17 掳C for 6 h) or FT (2 脳 10⁷ sperm/mL using a standard 0.25-mL straw protocol). The sperm quality was evaluated based on total sperm motility (the CASA system), viability (plasma membrane integrity assessed using flow cytometry and the LIVE/DEAD Sperm Viability Kit), lipid peroxidation (assessed via indirect measurement of the generation of malondialdehyde (MDA) using the BIOXYTECH MDA-586 Assay Kit) and DNA fragmentation (sperm chromatin dispersion assessed using the Sperm-Sus-Halomax ^庐 test). Data were normalized to the values assessed for the fresh (for liquid-stored and FT samples) or the sorted semen samples (for liquid stored and the FT sorted spermatozoa). All of the four sperm-processing techniques affected sperm quality (P < 0.01), regardless of the semen donor, with reduced percentages of motile and viable sperm and increased MDA generation and percentages of sperm with fragmented DNA. Significant (P < 0.05) inter-boar (effect of boars within each semen-processing technique) and intra-boar (effect of semen-processing techniques within each boar) differences were evident for all of the sperm quality parameters assessed, indicating differences in the ability of spermatozoa from individual boars to withstand the semen-processing techniques. These results are the first evidence that ejaculate spermatozoa from individual boars can respond in a boar-dependent manner to different semen-processing techniques.