中国畜牧兽医 ›› 2026, Vol. 53 ›› Issue (2): 870-878.doi: 10.16431/j.cnki.1671-7236.2026.02.032

• 遗传繁育 • 上一篇    下一篇

L-丙氨酸对公猪精液常温保存效果的影响

曾广湖1,2,3(), 贾雨轩1,2,3, 黄梦婷1,2,3, 沈祥玉1,2,3, 刘家伟1,2,3, 杜俊豪1,2,3, 龚婷1,2,3()   

  1. 1.贵州大学,高原山地动物遗传育种与繁殖教育部重点实验室,贵阳 550025
    2.贵州省动物遗传育种与繁殖重点实验室,贵阳 550025
    3.贵州大学动物科学学院,贵阳 550025
  • 收稿日期:2025-05-07 出版日期:2026-02-20 发布日期:2026-01-27
  • 通讯作者: 龚婷 E-mail:guanghuzeng@163.com;tgong@gzu.edu.cn
  • 作者简介:曾广湖,E-mail:guanghuzeng@163.com
  • 基金资助:
    国家自然科学基金项目(32260836);贵州省科学技术基金项目(黔科合基础[2020]1Y135);大学生创新创业训练项目计划(gzuxc2024030)

Effect of L-alanine on Boar Semen Storage at Room Temperature

ZENG Guanghu1,2,3(), JIA Yuxuan1,2,3, HUANG Mengting1,2,3, SHEN Xiangyu1,2,3, LIU Jiawei1,2,3, DU Junhao1,2,3, GONG Ting1,2,3()   

  1. 1.Key Laboratory of Genetics,Breeding and Reproduction of Plateau and Mountain Animals,Ministry of Education,Guizhou University,Guiyang 550025,China
    2.Key Laboratory of Animal Genetics,Breeding and Reproduction of Guizhou Province,Guiyang 550025,China
    3.College of Animal Science,Guizhou University,Guiyang 550025,China
  • Received:2025-05-07 Online:2026-02-20 Published:2026-01-27
  • Contact: GONG Ting E-mail:guanghuzeng@163.com;tgong@gzu.edu.cn

摘要:

目的 L-丙氨酸(L-alanine, L-Ala)是一种多功能添加剂,兼具增味剂和pH缓冲调节功能。本试验旨在探究L-Ala对公猪精液常温保存效果的影响,为改善公猪精液稀释液配方提供理论依据。 方法 采集3头1~2岁健康成年杜洛克公猪精液,在Modena稀释液中添加不同浓度(0、20、40、80、160、320 μg/mL)L-Ala,在17 ℃条件下检测第1、3、5和7天的精子活力和精子运动参数(直线运动速率(VSL)、曲线运动速率(VCL)、路径速率(VAP)和侧摆幅度(ALH)),并收集发生显著变化的精液进行顶体完整性、质膜完整性以及氧化应激指标检测。 结果 L-Ala对公猪精液常温保存效果具有浓度和时间依赖性。保存前5 d,各L-Ala浓度组(0~320 μg/mL)的精子运动参数均无显著差异(P>0.05)。保存第7天时,320 μg/mL L-Ala组精液表现最优:与对照组相比,精子活力提高9.73%(P<0.05),精子运动参数(VSL、VAP、ALH)分别升高11.33%、13.08%和12.17%(P<0.05),质膜完整率和顶体完整率分别增加43.71%和26.54%(P<0.05),总抗氧化能力(T-AOC)提高1.14倍(P<0.05),丙二醛(MDA)含量降低54.91%(P<0.05)。 结论 在本试验条件下,L-Ala可有效延长公猪精液常温保存时间,其中320 μg/mL为最适浓度,能在保存后期(第7天)显著维持精子质量,其作用机制可能与增强抗氧化能力、减少脂质过氧化损伤有关。

关键词: L-Ala; 公猪精液; 常温保存; 精子活力

Abstract:

Objective L-alanine (L-Ala) is a multifunctional additive that functions both as a sweetener and a pH buffer. This study aimed to investigate the effect of L-Ala on the effect of boar semen storage at room temperature and provide a theoretical basis for optimizing the formulation of semen diluents. Method Semen was collected from three healthy adult Duroc boars aged 1 to 2 years. Various concentrations (0, 20, 40, 80, 160, and 320 μg/mL) of L-Ala were added to Modena diluent. Sperm motility and motion parameters (straight-line (rectilinear) velocity (VSL), curvilinear velocity (VCL), average path velocity (VAP), and amplitude of lateral head (ALH)) were assessed at 17 ℃ on days 1, 3, 5, and 7 of storage. Samples showing significant changes were further analyzed for acrosome integrity, plasma membrane integrity, and oxidative stress indices. Result The effects of L-Ala on boar semen storage at room temperature were concentration- and time-dependent. During the first five days of storage, sperm motility parameters showed no significant differences in different concentration groups (0-320 μg/mL) (P>0.05). By days 7, 320 μg/mL L-Ala group exhibited the best performance, among which sperm motility increased by 9.73% (P<0.05), motility parameters (VSL, VAP, and ALH) increased by 11.33%, 13.08%, and 12.17% (P<0.05), and acrosome integrity rate and plasma membrane integrity rate increased by 43.71% and 26.54% (P<0.05), respectively, the total antioxidant capacity (T-AOC) increased by 1.14-fold (P<0.05), while malondialdehyde (MDA) content decreased by 54.91% (P<0.05). Conclusion Under the conditions of this experiment, L-Ala could effectively prolong the storage time of boar semen at room temperature, with 320 μg/mL being the optimal concentration. It significantly maintained sperm quality in the late storage period (7 days), the mechanism of action might be related to enhancing antioxidant capacity and reducing lipid peroxidation damage.

Key words: L-Ala; boar semen; storage at room temperature; sperm motility

中图分类号: