西乌珠穆沁旗放牧绵羊营养状况调查及营养性衰竭症分析研究

发布时间：2018-02-27 11:13

本文关键词： 西乌珠穆沁旗放牧绵羊营养状况营养性衰竭症　出处：《内蒙古农业大学》2015年硕士论文　论文类型：学位论文

【摘要】：本研究在对西乌珠穆沁旗(西乌旗)放牧绵羊主要饲草料、土壤及水源矿物元素含量及绵羊营养状况进行调查研究的基础上,进一步比较研究了发病区健康绵羊和发病绵羊的血清矿物元素和生化指标及被毛矿物元素含量的变化规律,以探讨放牧绵羊发生营养性衰竭症的主要原因,研究结果对促进西乌旗的养羊业健康发展以及减少牧民损失具有重要的指导和参考价值。本论文包括四个试验：试验一选择西乌旗白音华镇、巴彦花镇、浩勒图高镇为试验地区,调查研究了当地水样、土壤和牧草矿物元素的盈缺性。试验二采用单因子完全随机试验设计,通过对西乌旗白音华镇、巴彦花镇、浩勒图高镇三个不同地区放牧绵羊血清及羊毛矿物元素及血清生化指标的变化规律进行分析,对放牧绵羊的营养状况进行了调查研究。试验三采用单因子完全随机试验设计,在西乌旗主要发病区随机选取50只绵羊,25只健康绵羊作为对照组,25只具有明显营养性衰竭症的绵羊作为试验组。比较研究了健康羊和发病羊血清和被毛中4种常量元素和9种微量元素浓度的变化。试验四的试验设计同试验三,比较研究健康羊和发病羊血清中维生素A(VA)、维生素E(VE)、尿素氮(BUN)和游离脂肪酸(NEFA)浓度及碱性磷酸酶(AKP)活性的变化。本试验条件下得出：(1)西乌旗绵羊放牧地区土壤中Ca、P、Cu和Se元素处于临界缺乏状态,Mg和K处于正常范围下限,而重金属元素Cd、Zn的含量却超过土壤环境质量标准；饮水中的矿物元素含量均符合动物饮用水标准；天然草场和储备牧草处于低Cu、缺P和缺Se状态。(2)西乌旗放牧绵羊血清中Ca、P、K、Cu和Se的含量及被毛中Cu、Se的含量均低于正常范围的下限。(3)健康羊与发病羊血清中的Ca、P、Cu和Se含量及被毛的Ca、Cu含量均低于正常范围的下限,且发病羊血清Ca、Cu、Se浓度和被毛Ca、Cu含量显著低于健康羊。(4)健康羊与发病羊被毛Fe和Zn元素均高于正常范围的上限,且发病羊被毛Fe含量显著高于健康羊。(5)健康羊粪中的微量元素Cu含量显著低于对照组,而微量元素Fe含量却显著高于对照组,其他微量元素差异不显著。(6)发病羊血清中的AKP活性和NEFA含量显著高于健康羊,血清VA、 VE、 BUN含量间没有显著差异,健康羊与发病羊的血清VA浓度均低于正常范围。(7)西乌旗放牧绵羊发生营养性衰竭症可能是由于矿物元素Ca、P、Cu、 Se的缺乏引起的。
[Abstract]:On the basis of investigation of main forage, mineral element contents in soil and water source and nutritional status of sheep in Xiwu Qimuqin Banner (Xiwu Banner), In order to explore the main causes of nutritional failure in grazing sheep, the changes of serum mineral elements, biochemical indexes and the contents of hair mineral elements in healthy sheep and sheep were studied. The research results have important guidance and reference value for promoting the healthy development of sheep industry and reducing the losses of herdsmen in Xiwu Banner. This paper includes four experiments: experiment 1, selecting Baiyinhua Town, Xiwu Banner, Bayanhua Town, Bayanhua Town, Xiwu Banner, and reducing the losses of herdsmen. The surplus of mineral elements in water samples, soil and forage grass was investigated and studied in Haoletugao Town as experimental area. In the second experiment, a single factor complete random experimental design was used to study the characteristics of water samples, Baiyinhua Town and Bayanhua Town, Xiwu Banner, and Bayanhua Town. The changes of serum and wool mineral elements and serum biochemical indexes in three different areas of Hollertugaozhen were analyzed, and the nutritional status of grazing sheep was investigated. A total of 50 sheep and 25 healthy sheep were randomly selected as control group in Xiwu Banner as control group. Four kinds of serum and wool in healthy and diseased sheep were compared and studied. Changes in the concentrations of quantitative elements and nine trace elements. The experimental design of experiment 4 is the same as that of experiment III. The changes of the concentrations of vitamin A, vitamin E, bun (bun) and free fatty acid (Nefa) and alkaline phosphatase (AKP) in serum of healthy and diseased sheep were compared. And se elements are in the critical deficient state and mg and K are in the lower limit of the normal range. However, the content of CD ~ (2 +) Zn in drinking water was higher than that of soil environmental quality standard, and the mineral elements in drinking water were all in accordance with the standard of drinking water for animals. Natural pasture and stored forage are in low Cu2, P deficiency and se deficiency status. 2) the contents of CaPPK, Cu and se in serum of Xiwu flag grazing sheep and the content of Cu se in wool are lower than the lower limit of normal range. 3) CaPCu and se in serum of healthy sheep and sick sheep are lower than that of normal range. 3) the content of CaPCu and se in serum of healthy sheep and sick sheep is lower than that of sheep in normal range. The content of Ca-Cu in wool was lower than the lower limit of normal range. The serum concentration of Ca-CuSe and the content of Ca-Cu in wool were significantly lower than those in healthy sheep (P < 0.05). The Fe and Zn elements in hair of healthy sheep and sick sheep were higher than the upper limit of normal range. The content of trace element Cu in feces of sick sheep was significantly lower than that in control group, but the content of trace element Fe was significantly higher than that of control group. The activity of AKP and the content of NEFA in serum of diseased sheep were significantly higher than those of healthy sheep, but there was no significant difference in serum VA, VEand BUN content. The serum VA concentration of healthy sheep and diseased sheep was lower than that of normal range. 7) the nutritional failure of Sheep grazing in Xiwu Banner was probably caused by the deficiency of mineral elements CaPCuSe.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S826;S858.26

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