四川省筠连县七种微量元素的测定关联性分析

发布时间：2018-04-25 04:09

本文选题：筠连县 + 微量元素　；参考：《四川农业大学》2015年硕士论文

【摘要】：微量元素作为生物体中重要的营养物质,参与机体生理生化活动,具有重要的生物学意义。家畜微量元素缺乏或过量均可能引起营养代谢紊乱,发生疾病；土壤是微量元素的始源,与牧草和家畜组织中微量元素水平密切相关,土壤、牧草、家畜共同构成微量元素生物利用体系。筠连县位于四川盆地南缘,自然资源丰富,是西南地区重要的肉牛养殖基地。乌蒙筠连黄牛是适于山地饲养的地方良种,其肉品风味独特,被誉为富硒食品。通过区域调查探讨筠连县肉牛微量元素的营养状况,并分析其与土壤、牧草微量元素含量的相关性。试验选择筠连县具有代表性的4个乡镇,联合乡、高坪乡、大雪山镇和双腾镇,分别采集各乡镇的土壤、牧草及乌蒙筠连黄牛的毛发、血清样品,采用原子吸收光谱法测样品中Fe、Zn、Mn、Co、Cr、Cu、Se的含量。结果表明：1)4个乡镇的土壤中Fe、Mn、Zn、Co、Cr、Cu、Se的含量存在显著差异。4个乡镇土壤中Mn元素均低于参考值,其中双腾镇、大雪山镇显著降低；高坪乡、双腾镇土壤Cu低于参考值。土壤中Fe、Mn、Co、Cr、Cu、Se含量均由北向南,随纬度降低而呈升高趋势。2)4个乡镇的牧草中Fe、Mn、Co、Se含量丰富；联合乡、大雪山镇牧草中Zn含量丰富；高坪乡牧草中Cr含量亦丰富。3)4个乡镇肉牛毛发和血清中Se、Mn、Zn、Co的含量均丰富,Fe、Cr、Cu含量处于正常范围内。4)土壤和牧草之间,Fe、Mn、Zn、Se的含量呈高度相关(P0.01)；牧草与家畜以及土壤与家畜间微量元素Mn、Se含量存在显著相关性。结论：筠连县4个乡镇土壤缺乏Mn,双腾镇土壤缺Cu。联合乡、大雪山镇牧草Zn含量偏高,大雪山镇牧草Cr偏高；4个乡镇牧草中Co、Se的含量均丰富。4个乡镇的肉牛毛发中Fe、Zn、Cu、Se含量丰富,肉牛血清中Fe、Mn、Zn、Co、Cu的含量丰富。双腾镇肉牛毛发中Mn、Co含量丰富,双腾镇、高坪乡肉牛血清中Se含量丰富。在4个乡镇中,土壤、牧草及肉牛毛发、血清的微量元素含量间存在着复杂关联性,且受饲养条件、地区环境差异,牧草生长阶段,以及家畜饲喂方式等影响。
[Abstract]:Trace elements, as important nutrients in organisms, participate in physiological and biochemical activities, and have important biological significance. The deficiency or excess of trace elements in domestic animals may lead to the disorder of nutrition metabolism and the occurrence of diseases, and soil is the origin of trace elements, which is closely related to the level of trace elements in forage and livestock tissues. Domestic animals together form a microelement bioutilization system. Junlian County, located in the southern margin of Sichuan Basin, is rich in natural resources and is an important beef cattle breeding base in Southwest China. WumengJunlian cattle is a local fine breed suitable for mountain breeding, and its meat flavor is unique, so it is praised as selenium-rich food. The nutritional status of trace elements in beef cattle in Junlian County was investigated and the correlation between trace elements content in soil and forage was analyzed. Four representative townships in Junlian County, United Township, Gaoping Township, Daxueshan Town and Shuangteng Town were selected to collect soil, forage grass, hair and serum samples from Wumenjunlian cattle, respectively. The content of CuSe was determined by atomic absorption spectrometry (AAS). The results showed that there was a significant difference in the content of Fe mn Zn Pu CoCrCU CuSe in the soils of 4 villages and towns, all of which were lower than the reference values, among which Shuangteng Town and Daxueshan Town were significantly lower than the reference values, while in Gaoping Township, Shuangteng Township, the Cu contents in the soils were lower than the reference values. The contents of Fe _ (mn) CoCoC _ (C) Cu _ (se) in soil were all from north to south, and increased with the decrease of latitude. 2) the content of Fe _ (mn) CoCoSe was rich in forage grass in four towns, and the Zn content in forage was rich in the town of Dasueshan in United Township, and the content of Zn in forage was rich in the town of Dasueshan. The contents of hair and serum of the four township beef cattle were all rich in the content of Fe, Fe, Cr and Cu in the normal range. 4) there was a high correlation between soil and forage grass, there was a high correlation between the content of Fe, Fe, mn, Zn, se, and the content of forage grass and livestock, soil and family. There was a significant correlation between the content of trace element MnSe in livestock. Conclusion: soil is deficient in mn in 4 towns in Junlian County and Cu-deficient in soil in Shuangteng Town. In United township, the content of Zn in forage grass was higher in Daxueshan town, Cr in forage grass was higher in Daxueshan town, and the content of Coosse in four townships was rich. The content of FeznznCuCuSe in hair of beef cattle in 4 towns was rich, and the content of FeMnMnOZnCuCoSe in serum of beef cattle was rich. The content of MNO Co in hair of beef cattle in Shuangteng town was rich, and se content in serum of cattle in Shuangteng town and Gaoping town was rich. In four villages and towns, the contents of trace elements in soil, forage grass, beef cattle hair and serum were closely related, and were affected by feeding conditions, regional environmental differences, forage growth stage and the way of livestock feeding.
【学位授予单位】：四川农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S823

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