棕背鼠平性别的快速鉴定
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(中国农业科学院哈尔滨兽医研究所,黑龙江省实验动物与比较医学重点实验室,哈尔滨 150009;牡丹江师范学院,黑龙江牡丹江 157011)

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R-33

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国家科技支撑计划(编号:2015BAI07B02?02)


A rapid and useful method for gender identification of grey red⁃backed voles
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(Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences; Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin 150009, China;Mudanjiang Normal College,Mudanjiang 157011)

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    摘要:

    目的 野生棕背鼠平因其活动敏捷?性情凶猛?不易抓取,很难从外表对其性别做出准确判断,影响分笼及后期的实验室繁育,拟建立一种快速?准确?简便的性别鉴定方法?方法 以棕背鼠平的新鲜被毛为材料,Chelex?100 提取毛囊DNA,利用PCR 技术分别扩增锌指结构基因(ZFY/ZFY)片段和Y 染色体性别决定区基因(SRY)片段,并建立双重PCR 扩增方法?结果 雄性棕背鼠平扩增出ZFY/ZFY和SRY 两个基因片段,而雌性棕背鼠平只扩增出ZFY/ZFY基因片段?利用这种方法对23 只棕背鼠平?10 只Wistar 大鼠和8 只BALB/ c 小鼠进行性别鉴定,扩增结果与表型判断和解剖结果一致?结论 以被毛为实验材料,减少了对棕背鼠平的惊吓和损伤;建立的双重PCR 扩增方法准确?快速,可应用于鼠的性别鉴定?

    Abstract:

    Objective Grey red?backed voles (Myodes rufocanus) are agile, fierce and hard to catch, thus, it is difficult to judge their gender by external appearance, especially for the juvenile voles. Therefore, it may cause difficulties to their allocation and later breeding in laboratories. The aim of this paper is to establish a rapid, simple and accurate method for gender identification of grey red?backed voles. Methods Fresh hair follicles were taken from 6 adult male voles, 3 adult females and 14 4?week?old juvenile voles, 5 male and 5 female 9?week?old Wistar rats, and 5 male and 3 female 6?week?old BALB/ c mice. The genomic DNA was extracted using Chelex?100 resin and the zinc?finger Y/ X gene (ZFY/ZFY) and the gene of sex?determining region of the Y (SRY) chromosome were amplified by PCR, and a double PCR amplification method was established. Results The ZFY/ZFY gene and SRY gene were simultaneously amplified from the male voles, while only the ZFY/ZFY gene was amplified from the females. The gender of all 23 voles, 10 Wistar rats and 8 BALB/ c mice were correctly identified with this method, and the PCR results were consistent with the phenotypic and autopsy results. Conclusions Using fresh hair follicles as experimental materials for gender identification of grey red?backed voles can alleviate shock and damage to the animals. The established double PCR amplification method is accurate,simple, rapid, and deserves to be used for gender identification of grey red?backed voles.

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马芹,王元智,陆涛峰,李智昊,杨春文,陈洪岩.棕背鼠平性别的快速鉴定[J].中国比较医学杂志,2018,28(1):96~99.

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  • 收稿日期:2017-08-03
  • 在线发布日期: 2018-02-02
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