《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (9): 2613-2620.doi: 10.16431/j.cnki.1671-7236.2017.09.011

• 动物营养与饲料科学 • 上一篇    下一篇

外源褪黑素处理方式对荷斯坦奶牛体内褪黑素富集与代谢的影响

杨明辉1, 史建民1,2, 陶景丽1, 吴昊1, 柴孟龙1,3, 王静1, 任康4, 徐志远1,5, 姬鹏云1, 路永强4, 何长久1,6, 杨利国6, 刘国世1   

  1. 1. 中国农业大学动物科技学院, 畜禽育种国家工程实验室, 农业部动物遗传育种与繁殖重点实验室, 北京市动物遗传改良重点实验室, 北京 100193;
    2. 全国畜牧总站, 北京 100125;
    3. 黑龙江省农垦科学院畜牧兽医研究所, 哈尔滨 150038;
    4. 北京奶牛中心, 北京 100085;
    5. 吉林农业大学动物科技学院, 长春 130118;
    6. 华中农业大学, 武汉 430070
  • 收稿日期:2017-04-08 出版日期:2017-09-20 发布日期:2017-09-22
  • 通讯作者: 刘国世 E-mail:gshliu@cau.edu.cn
  • 作者简介:杨明辉(1991-),男,山东威海人,博士生,研究方向:配子与胚胎生物技术,E-mail:Yangmh16@cau.edu.cn
  • 基金资助:

    北京市奶牛产业创新团队(BAIC06-2016);国家自然科学基金项目(31372306)

Effects of Different Melatonin Injection Ways on the Enrichment and Metabolism of Blood Melatonin in Holstein Cows

YANG Ming-hui1, SHI Jian-min1,2, TAO Jing-li1, WU Hao1, CHAI Meng-long1,3, WANG Jing1, REN Kang4, XU Zhi-yuan1,5, JI Peng-yun1, LU Yong-qiang4, HE Chang-jiu1,6, YANG Li-guo6, LIU Guo-shi1   

  1. 1. Beijing Key Laboratory for Animal Genetic Improvement, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. National Animal Husbandry Service, Beijing 100125, China;
    3. Animal Husbandry and Veterinary Institute, Heilongjiang Academy of Land Reclamation Sciences, Harbin 150038, China;
    4. Beijing Dairy Cattle Center, Beijing 100085, China;
    5. College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
    6. Huazhong Agriculture University, Wuhan 430070, China
  • Received:2017-04-08 Online:2017-09-20 Published:2017-09-22

摘要:

为研究正常情况下经产荷斯坦奶牛24 h内血液中褪黑素浓度的变化情况,探索不同外源褪黑素处理方式对荷斯坦奶牛血液褪黑素浓度的影响,本研究采用颈静脉注射、颈部皮下注射、颈部皮下埋植和口腔灌服外源褪黑素等方式处理经产荷斯坦奶牛,观察血液中褪黑素浓度的变化情况并分析褪黑素在体内的分泌规律及代谢速率。结果显示,在24 h内,经产荷斯坦奶牛血液中褪黑素浓度变化明显,04:00浓度最高,为8.30 ng/mL,16:00浓度最低,为2.08 ng/mL。皮下埋植和口腔灌服外源褪黑素以后,血液中褪黑素浓度升高幅度较小;皮下注射46.4、4.64和0.464 mg褪黑素后,血液中褪黑素浓度迅速升高,1 h后达到峰值,分别为561.94、487.03、92.89 ng/mL,极显著高于注射前(P<0.01);静脉注射46.4、4.64和0.464 mg褪黑素后,血液中褪黑素浓度迅速升高,0.5 h之后达到峰值,分别为767.68、639.19、110.56 ng/mL,极显著高于注射前(P<0.01),高水平褪黑素可稳定持续48 h。本研究证明了荷斯坦奶牛体内褪黑素分泌有明显的昼夜节律性,静脉或皮下注射外源褪黑素可以迅速提高血液中褪黑素的浓度,且血液中褪黑素的代谢速度与褪黑素的浓度高度相关,随着血液中褪黑素浓度的增加,褪黑素的代谢速度明显加快。

关键词: 荷斯坦奶牛; 褪黑素; 埋植; 皮下/静脉注射; 代谢速度

Abstract:

In order to exploring the change pattern of melatonin in blood under the normal conditions of the multiparous Holstein cows within 24 h,the change of melatonin in blood of Holstein cows after the intravenous injection,subcutaneous implantation in neck,neck subcutaneous injection and drench were studied and the melatonin secretion rule and its metabolic rate were analyzed. The results showed that melatonin secretion changes obviously in the blood within 24 h,the concentration peak appeared at 04:00 (8.30 ng/mL),lowest at 16:00 (2.08 ng/mL). After subcutaneous implantation and drench,the concentration of melatonin in the blood rose relatively flat compared to other groups. Subcutaneous injection of 46.4, 4.64 and 0.464 mg melatonin,the concentration in the blood rose rapidly, the peak appeared at 1 h after the injection,which were 561.94,487.03,92.89 ng/mL,respectively,extremely significantly higher than pre-injection (P<0.01).Intravenous injection of 46.4,4.64 and 0.464 mg melatonin,the concentration in the blood also rose rapidly,the peak appeared at 0.5 h after the injection,which were 767.68,639.19,110.56 ng/mL,respectively,extremely higher than pre-injection (P<0.01).This study proved that the secretion of melatonin in the Holstein cows had obvious circadian rhythm,intravenous or subcutaneous injection of melatonin could improve the concentration of melatonin rapidly and there was a high correlation between the melatonin metabolic rate and the melatonin concentration in the blood,with the increase of the concentration of melatonin,the metabolism velocity was accelerated obviously.

Key words: Holstein cows; melatonin; implantation; subcutaneous/intravenous injection; metabolic rate

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