霍宾¹,
吴婷¹,
肖华²,
申小云^1,2,3,,
1. 西南科技大学生命科学与工程学院, 绵阳 621010;
2. 贵州师范大学国家喀斯特石漠化防治工程技术研究中心, 贵阳 550025;
3. 中国西南世界银行扶贫项目贵州办公室, 贵阳 550004

作者简介: 霍宾(1994-),男,硕士研究生,研究方向为生态毒理学,E-mail:Sichuanhuobin@163.com.

通讯作者: 申小云,rmshenxy@163.com

基金项目: “十三五”国家重点研发计划项目(2016YFC0502601)；西南科技大学博士基金项目(17zx7146)；国家自然科学基金面上项目(41671041)


中图分类号: X171.5

Effect of Copper Contaminated Pasture on Mineral Metabolism in the Wumeng Semi-fine Wool Sheep

Huo Bin¹,
Wu Ting¹,
Xiao Hua²,
Shen Xiaoyun^1,2,3,,
1. School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
2. State Engineering Technology Institute for Kast Desertification Control, Guizhou Normal University, Guiyang 550025, China;
3. World Bank Poverty Alleviation Project Office in Guizhou, Southwest China, Guiyang 550004, China

Corresponding author: Shen Xiaoyun,rmshenxy@163.com

CLC number: X171.5

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摘要:为了评价草地铜污染对放牧乌蒙半细毛羊的影响，探讨铜污染的治理方法，在乌蒙山区的妈姑镇和凉水沟开展草地放牧试验和矿物质元素补充研究。应用原子发射光谱分析土壤、牧草和动物组织的重金属含量，应用全自动血液分析仪分析血液指标。放牧试验的结果显示：铜污染草地放牧明显增加了动物组织铜和锌的含量(P<0.01)，降低了动物组织钼和铁的含量(P<0.01)，试验结束时，试验组动物的血红蛋白(Hb)、红细胞压积(PCV)、红细胞数(RBC)和平均红细胞体积(MCV)显著低于对照组(P<0.01)，羊毛产量和长度显著低于对照组(P<0.01)。矿物质元素补充试验的结果显示：补充硫酸钠明显降低了铜污染草地放牧动物血液和肝脏铜元素含量，补充试验结束时，处理Ⅰ组动物血液的Hb、PCV、RBC和MCV显著高于处理Ⅱ组(P<0.01)，血液指标达到正常范围。处理Ⅱ组动物血液和肝脏铜元素的含量继续升高，动物组织钼的含量继续降低(P<0.01)，Hb、PCV和RBC继续下降，试验结束时出现溶血性贫血，但补充硫对羊毛品质的相关指标没有显著的影响。研究表明，铜污染草地严重影响了乌蒙半细毛羊的矿物质代谢，补充硫酸钠可以部分拮抗铜的毒性。
关键词: 铜污染草地/
乌蒙半细毛羊/
硫酸钠/
重金属含量/
矿物质代谢

Abstract:To assess the impact of copper (Cu) pollution on mineral metabolism in the grazing Wumeng semi-fine wool sheep, two studies were conducted in the Magu pasture and Liangshuigou rangeland in the Wumeng mountainous area. Contents of heavy metal elements in soil, forage, blood and liver were analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-AES). Blood parameters were determined on automatic hematology analyzer. Results of the grazing test showed that contents of Cu and zinc (Zn) in blood and liver from affected sheep are significantly higher than those in controls (P<0.01), and concentrations of molybdenum (Mo) and iron (Fe) in blood and liver in affected sheep are significantly lower than those in controls (P<0.01). Hemoglobin (Hb), packed cell volume (PCV), red blood cell count (RBC) and mean corpuscular volume (MCV) are significantly reduced in affected sheep from copper contaminated pasture (P<0.01). The yield and length of wool are significantly lower than those in controls (P<0.01). Results of a mineral supplement test showed that contents of Cu and Mo in blood and liver in sheep of supplied sodium sulfate from copper contaminated pasture were significantly decreased (P<0.01). Hb, PCV, RBC and MCV from sheep of supplied sodium sulfate were significantly increased, and reached healthy values at the end of test. Hb, PCV, RBC and MCV in sheep from control kept significant reduction. The hemolytic anemia has been found in sheep from copper contaminated pasture at the end of test. Effects of supplied sodium sulfate to forage on wool quality are not obvious. The mineral metabolism of grazing sheep has been severely disrupted in copper contaminated pasture. Adding sodium sulfate content of forage can reduce copper absorption in the Wumeng semi-fine wool sheep.
Key words:copper pollution meadow/
Wumeng semi-fine wool sheep/
sodium sulfate/
heavy metal content/
mineral metabolism.