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中国农学通报 ›› 2020, Vol. 36 ›› Issue (21): 140-144.doi: 10.11924/j.issn.1000-6850.casb20191000767

所属专题: 畜牧兽医

• 畜牧·动物医学·蚕·蜂 • 上一篇    下一篇

黄牛-奶牛IVF胚胎早期发育影响因素的研究

张立苹, 林郑云, 郑新民, 华再东, 肖红卫, 毕延震()   

  1. 湖北省农业科学院 畜牧兽医研究所/动物胚胎工程及分子育种湖北省重点实验室,武汉 430064
  • 收稿日期:2019-10-28 修回日期:2019-11-26 出版日期:2020-07-25 发布日期:2020-07-21
  • 通讯作者: 毕延震
  • 作者简介:张立苹,女,1982年出生,河北邢台人,助理研究员,硕士,研究方向:动物胚胎工程。通信地址:430064 湖北省武汉市洪山区南湖瑶苑特4号省农科院生物楼4楼,Tel:027-87380647,E-mail:949164559@qq.com。
  • 基金资助:
    湖北省农业科技创新中心项目“家畜高效繁育技术研究”(2020-620-000-001-20);湖北省自然科学基金创新群体“特色地方猪种质创新与遗传育种”(2018CFA014);湖北省农业科学院青年拔尖人才培养计划“猪ICSI胚胎早期发育阻滞的分子调控机制研究”(Q2018020)

Influencing Factors of Early Embryos Development of Cattle-cow in Vitro Fertilization

Zhang Liping, Lin Zhengyun, Zheng Xinmin, Hua Zaidong, Xiao Hongwei, Bi Yanzhen()   

  1. Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Science and Veterinary Medicine, Hubei Academy of Agricultural Sciences, Wuhan 430064
  • Received:2019-10-28 Revised:2019-11-26 Online:2020-07-25 Published:2020-07-21
  • Contact: Bi Yanzhen

摘要:

为了在实验室建立一套黄牛-奶牛IVF胚胎制备体系,为IVF胚胎的研究提供来源方便、制备简单的素材,本实验从黄牛-奶牛IVF胚胎制备过程中卵巢的处理方法、精子的处理方法及受精卵的培养方法等几个方面进行优化。结果表明:温度递增式洗涤卵巢(25℃、30℃、35℃、39℃),对卵母细胞起到一定的缓冲作用,获取A级COCS的比例和卵母细胞的成熟率较直接用25℃和39℃生理盐水洗涤卵巢高且差异显著,但是卵裂率和囊胚率并没有显著差异;用移液器轻轻吹打精子后,显著提高卵母细胞的受精率和卵裂率;培养方法对黄牛-奶牛IVF胚胎的早期发育有一定的影响。研究结果提示,经过温度递增式的生理盐水梯度洗涤卵巢,以体外成熟的黄牛卵母细胞为受体、以高产奶牛冷冻精子经过移液器轻微反复吹打处理后进行体外受精,受精卵置五孔板中进行IVF胚胎的体外培养,可以获得发育至孵化囊胚的黄牛-奶牛IVF胚胎。

关键词: 黄牛, 奶牛, 体外受精胚胎, 卵裂率, 囊胚率

Abstract:

To establish a set of cattle-cow IVF embryo preparing system in laboratory and provide convenient sources and simple materials for IVF embryo research, several aspects such as ovarian treatment, sperm treatment and the culture conditions of fertilized eggs were optimized. The results showed that ovaries washed with increasing temperature (25℃, 30℃, 35℃, 39℃) had buffer effects on the oocytes, and higher proportion of A-COCs and matured oocytes were obtained compared with that of washing ovaries directly with 25℃ and 39℃ normal saline, and the difference was significant, but there was no significant difference with the cleavage rate and blastocyst rate. After blowing sperm gently with pipette, the fertilized oocytes and cleavage rate were significantly increased. Culture method had a certain effect on the early development of IVF embryo. The results showed that the hatching blastocysts could be obtained by in vitro fertilization of the mature cattle oocytes and the frozen spermatozoa of the high-yield dairy cows, which are treated with the pipette and blown repeatedly and the fertilized eggs are placed in a five-hole plate for IVF embryo culture in vitro.

Key words: cattle, cow, in vitro fertilization embryo, cleavage, blastocyst

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