中国畜牧兽医 ›› 2024, Vol. 51 ›› Issue (11): 4783-4791.doi: 10.16431/j.cnki.1671-7236.2024.11.013

• 营养与饲料 • 上一篇    

产蛋高峰期与后期山麻鸭卵泡发育、抗氧化能力和自噬水平的比较

姜力莹1, 马曼婷2, 李凯潮2, 张亚男2, 赖跃1,2, 陈伟2, 王爽2, 夏伟光2, 金成龙2, 郭亮1, 郑春田2   

  1. 1. 天津农学院动物科学与动物医学学院, 天津市农业动物繁育与健康养殖重点实验室, 天津 300392;
    2. 广东省农业科学院动物科学研究所, 猪禽种业全国重点实验室, 农业农村部华南动物营养与饲料重点实验室, 广东省动物育种与营养公共实验室, 广东省畜禽育种与营养研究重点实验室, 广州 510640
  • 收稿日期:2024-05-13 发布日期:2024-10-31
  • 通讯作者: 郭亮 E-mail:3214662004@qq.com
  • 作者简介:姜力莹,E-mail:jly9349@163.com;马曼婷,E-mail:476175621@qq.com;郑春田,E-mail:zhengcht@163.com。
  • 基金资助:
    财政部和农业农村部-国家现代农业产业技术体系(CARS-42-13);广东省水禽产业技术创新团队(2023KJ137);广东省农业农村厅畜禽全产业链标准化示范基地创建项目;蛋鸭笼养与精准营养供给技术研究与示范推广;广东省农业科学院高水平科技创新战略建设专项资金(202106TD、R2021PY-QY005)

Comparison of Follicle Development,Antioxidant Capacity and Autophagy Level Between Shan-ma Duck at Peak and Late Stages of Laying

JIANG Liying1, MA Manting2, LI Kaichao2, ZHANG Yanan2, LAI Yue1,2, CHEN Wei2, WANG Shuang2, XIA Weiguang2, JIN Chenglong2, GUO Liang1, ZHENG Chuntian2   

  1. 1. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China;
    2. Institute of Animal Science, Guangdong Academy of Agricultural Sciences, State Key Laboratory of Swine and Poultry Breeding Industry, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
  • Received:2024-05-13 Published:2024-10-31

摘要: 【目的】 探讨不同产蛋阶段山麻鸭的卵泡发育、促性腺激素水平、抗氧化能力及卵泡自噬相关基因的变化规律,为开发延长蛋禽产蛋期新技术奠定研究基础。【方法】 采用单因素完全随机试验设计,选取产蛋正常的产蛋高峰期(25周)和产蛋后期(70周)的龙岩山麻鸭各84只,随机各分为6个重复,每个重复14只。饲喂同一玉米-豆粕型基础饲粮,试验期8周。于第8周末,随机从每个重复选取3只体况良好、产蛋正常的蛋鸭采血、屠宰取样,检测各项血液生化指标及卵巢发育相关指标。【结果】 与产蛋高峰期山麻鸭相比,①产蛋后期山麻鸭的小黄卵泡数量、小黄卵泡指数及平均小黄卵泡重均显著降低,闭锁卵泡重量显著增加(P<0.05)。②产蛋后期山麻鸭血浆中卵泡刺激素(FSH)水平显著降低(P<0.05);小黄卵泡的谷胱甘肽过氧化物酶和总超氧化物歧化酶活性显著降低、丙二醛水平显著升高,此外,闭锁卵泡的谷胱甘肽过氧化物酶和总超氧化物歧化酶活性显著降低(P<0.05)。③产蛋后期山麻鸭卵泡中促卵泡素受体(FSHR) mRNA表达水平降低,叉头转录因子1(FOXO1)被激活并调控自噬相关基因(选择性自噬受体(SQSTM1)和beclin 1(BECN1)下调)(P<0.05)。【结论】 山麻鸭进入产蛋后期,由于氧化应激增加,卵泡中FSH含量及敏感性降低,激活FOXO1调控卵泡颗粒细胞自噬,抑制卵泡发育。

关键词: 山麻鸭; 卵泡发育; 抗氧化能力; 自噬

Abstract: 【Objective】 To investigate the changes of follicle development,gonadotropin levels,antioxidant capacity and follicle autophagy related genes in ducks at different laying stages,and to lay a research foundation for developing new technology to prolong laying period of laying birds. 【Method】 The single factor completely randomized experimental design was adopted,and 84 normal laying ducks (Longyan Shan-ma duck) in the peak laying stage (25 weeks) and the late laying stage (70 weeks) were selected.These ducks were randomly divided into 6 replicates,with 14 ducks in each replicate.The ducks were fed with the same corn-soybean meal basal diet for 8 weeks.At the end of the 8th week,3 healthy and normal laying ducks were randomly selected from each replicate for blood collection and slaughter sampling to detect blood biochemical indicators and ovarian development indicators. 【Result】 Compared with the duck in peak laying stage,①The number of small yellow follicles,the index of small yellow follicles and the average weight of small yellow follicles of laying duck in late laying stage were significantly reduced,and the weight of atretic follicles was significantly increased (P<0.05).②The plasma follicle-stimulating hormone (FSH) level of laying duck in late laying stage was significantly lower (P<0.05),the activities of glutathione peroxidase (GSH-Px) and total superoxide dismutase (T-SOD) in small yellow follicles and the malondialdehyde (MDA) level were significantly higher,and the activities of GSH-Px and T-SOD in atretic follicles were significantly lower (P<0.05).③The mRNA expression level of follicle-stimulating hormone receptor (FSHR) in follicles of laying duck in late laying stage was reduced,and forkhead transcription factor 1 (FOXO1) was activated and regulated autophagy-related genes (selective autophagy receptor (SQSTM1) and beclin 1 (BECN1)) (P<0.05). 【Conclusion】 When Shan-ma ducks entered the late laying period,the content and sensitivity of FSH in follicles were decreased due to the increase of oxidative stress,and FOXO1 was activated to regulate the autophagy of follicular granulosa cells and inhibit follicular development.

Key words: Shan-ma duck; follicle development; antioxidant capacity; autophagy

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