浙江农业学报 ›› 2017, Vol. 29 ›› Issue (4): 548-554.DOI: 10.3969/j.issn.1004-1524.2017.04.05

• 动物科学 • 上一篇    下一篇

回乳期奶牛血清GH、INS、HC、TGF-β1和IGF-1含量变化

沈留红1, 巫晓峰1, 肖劲邦1, 姜思汛1, 邓俊良1, 左之才1, 傅宏庆2, 曹随忠1, 余树民1, *, 张有瑞3   

  1. 1.四川农业大学 动物医学院 动物疫病与人类健康四川省重点实验室,奶牛疾病研究中心, 四川 成都 611130;
    2.江苏农牧科技职业学院,江苏 泰州 225300;
    3.河北省廊坊市农业局水产站,河北 廊坊 065000
  • 收稿日期:2016-11-01 出版日期:2017-04-20 发布日期:2017-04-27
  • 通讯作者: 余树民,E-mail:yayushumin@163.com
  • 作者简介:沈留红(1979—),男,江苏如皋人,副教授,博士研究生,从事反刍动物疾病及繁殖新技术研究,E-mail:shenlh@sicau.edu.cn
  • 基金资助:
    四川省教育厅重点项目(15ZA0024); 江苏农牧科技职业学院产业发展关键技术创新项目(NSF201604); 四川农业大学双支计划项目

Changes of GH, INS, HC, TGF-β1 and IGF-1 levels in cows’ serum during milk withdrawal period

SHEN Liuhong1, WU Xiaofeng1, XIAO Jinbang1, JIANG Sixun1, DENG Junliang1, ZUO Zhicai1, FU Hongqing2, CAO Suizhong1, YU Shumin1, *, ZHANG Yourui3   

  1. 1. The Key Laboratory of Animal Disease and Human Health of Sichuan Province, The Medical Research Center for Cow Disease,College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China;
    2. Jiangsu Agri-animal Husbandry Vocational College, Taizhou 225300, China;
    3. Agricultural Bureau of Langfang City, Langfang 065000, China
  • Received:2016-11-01 Online:2017-04-20 Published:2017-04-27

摘要: 为探究回乳期奶牛血清中生长激素(GH)、胰岛素(INS)、氢化可的松(HC)、转化生长因子β1(TGF-β1)和胰岛素样生长因子1(IGF-1)含量的变化及其相关性。试验选择规模化奶牛场日产奶量为(15.43 ± 2.10) kg,即将干乳的妊娠后期健康中国荷斯坦奶牛20头。干乳开始当天记为第0天,分别采集第0、1、3、5、7、9和11天奶牛尾静脉血,ELISA法检测血清中GH、INS、HC、TGF-β1和IGF-1含量并对结果进行统计学处理,分析其在奶牛回乳过程中的变化规律及其相关性。结果显示,回乳期奶牛血清GH、INS、HC和TGF-β1含量在第0至1天变化不显著(P>0.05);血清GH和HC含量第3至11天依次降低且差异均极显著(P<0.01),其中血清HC含量第3天极显著高于其余各天(P<0.01);血清INS含量第3至11天依次升高且差异均极显著(P<0.01);血清TGF-β1含量第3至11天差异性均不显著(P>0.05);血清IGF-1含量依次呈阶梯式下降趋势,第0天和第1天、第3天和第5天、第7天和第9天、第9天和第11天之间均差异不显著(P>0.05),但第0至1天、第3至5天、第7至11天3阶段之间差异极显著(P<0.01)。回乳期奶牛血清GH、INS、TGF-β1和IGF-1含量变化两两间呈极显著相关(P<0.01);HC含量变化与GH、INS和IGF-1含量变化均呈极显著相关(P<0.01),与TGF-β1含量变化呈显著负相关(P<0.05)。

关键词: 回乳期奶牛, 生长激素, 胰岛素, 氢化可的松, 转化生长因子β, 1, 胰岛素样生长因子1

Abstract: In order to explore the changes and correlation among the levels of growth hormone (GH), insulin (INS), hydrocortisone (HC), TGF-β1 and IGF-1 in cows’ serum during the period of milk withdrawal. Twenty healthy Chinese Holstein cows in late pregnancy that gave (15.43±2.10) kg milk per day were used, which were ready to dry milk. The day when cows began to dry milk was recorded as the 0 d. The cows’ venous blood from the tail on the day 0, 1, 3, 5, 7, 9 and 11 were collected. ELISA was used to evaluate the levels of GH, INS, HC, TGF-β1 and IGF-1 in serum to analyze the changes and correlation among them. The results showed that, during the period of milk withdrawal, the changes of GH, INS, HC and TGF-β1 levels in serum were not obvious from the day 0 to the day 1 (P>0.05). The levels of GH and HC in serum were both on the decline and had significant difference from the day 3 to the day 11 (P<0.01), and the levels of GH in serum on the day 3 was significantly higher than those on the other days (P<0.01). The levels of INS in serum was on the rise and had significant (P<0.01) difference from the day 3 to the day 11, while the levels of TGF-β1 in serum had no significant (P>0.05) difference from the day 3 to the day 11. The levels of IGF-1 in serum showed downward trend in ladder type, and the difference among levels of IGF-1 in serum on the day 0 and day 1, day 3 and day 5, day 7 and day 9, day 9 and day 11 were not obvious (P>0.05), while IGF-1 levels among 0-1 d, 3-5 d and 7-11 d had significant (P<0.01) difference. There was significant (P<0.01) correlation among the levels of GH, INS, TGF-β1 and IGF-1 in cows’ serum separately during the period of milk withdrawal. The HC levels showed significant (P<0.01) correlation with GH, INS and IGF-1 levels, while it showed significant (P<0.05) negative correlation with TGF-β1 levels.

Key words: cows in milk withdrawal period, GH, INS, HC, TGF-β, 1, IGF-1

中图分类号: