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现代研究表明,中草药中含有的苷类、生物碱、有机酸、挥发油等免疫活性物质,保持了天然性外源精华的物质,毒副作用小,能活化机体的免疫系统,对正常或异常机体的细胞免疫和体液免疫功能具有增强或调节作用。中药对处于不同免疫状态下的动物可产生不同的作用,即对免疫机能低下者起促进 相似文献
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五味子的生物学作用与应用 总被引：3，自引：0，他引：3
五味子富含多种营养成分,具有提高机体免疫功能和抗氧化机能等作用。作者综述了五味子的化学成分、药理作用、应用的研究近况以及在畜牧业中应用的前景。 相似文献
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女贞子、五味子与寡糖配伍对肉鸡生产性能和免疫功能的影响 总被引：21，自引：0，他引：21
研究了中草药女贞子、五味子以及女贞子、五味子与葡萄糖甘露寡糖(MOS)配伍对肉鸡生产性能及免疫功能的影响。选择180只肉鸡公雏随机分为6组，空白组饲喂基础饲粮，抗生素组在基础饲粮中添加5mg／kg黄霉素，试验组分别在基础饲粮中添加1％女贞子、五味子、女贞子 MOS、五味子 MOS。试验从1日龄开始，试验期56d。结果表明：五味子 MOS在肉鸡生长中、后期能显著提高肉鸡的体增重；女贞子能提高肉鸡的ND抗体效价；各试验组均显著提高了鸡脾淋巴细胞在ConA诱导下的增殖反应。说明中草药添加剂能够提高肉鸡的体增重、增强肉鸡的免疫性能。 相似文献
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本文主要通过文献资料,对中药及复方对鸡生产性能和免疫功能影响的研究报道进行了概述,结果表明很多中药及复方具有显著提高鸡的生产性能、促进免疫器官发育、提高疫苗的抗体效价以及增强机体体液免疫和细胞免疫机能的多重功效。 相似文献
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试验研究了中草药女贞子、五味子以及女贞子、五味子与葡萄糖甘露寡糖(MOS)配伍对肉鸡生产性能及免疫功能的影响。选择180只肉鸡公雏随机分为6组,空白组饲喂基础饲粮,抗生素组在基础饲粮中添加5mg/kg黄霉素,试验组分别在基础饲粮中添加1%女贞子、1%五味子、1%女贞子 0.5%甘露寡糖、1%五味子 0.5%甘露寡糖。试验从1日龄开始,试验期56d。结果表明:五味子 甘露寡糖在肉鸡生长中、后期能显著提高肉鸡的体增重(P<0.05);女贞子能提高肉鸡的ND抗体效价;各试验组均显著提高了鸡脾淋巴细胞在ConA诱导下的增殖反应(P<0.05)。说明中草药添加剂能够提高肉鸡的体增重、增强肉鸡的免疫功能。 相似文献
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增免散对雏鸡免疫功能和增重的影响 总被引：6，自引：1，他引：5
近年来 ,随着中药免疫药学研究的逐步深入 ,人们发现许多中药或其活性成分能增强机体免疫功能 ,促进机体生长 ,预防疾病的发生。对于应用中草药防治鸡传染病、提高免疫力机理的研究报道很多 ,如陆钢[1] 报道党参等药具有提高鸡血清抗体和雏鸡保护率的作用 ,延长抗体存留时间 ,增强吞噬细胞的功能 ,提高机体免疫力 ;方维焕报道黄连等 2 2种中药对鸡新城疫病毒有不同程度的抑制作用 ,1 6种中药能明显抑制病毒血凝和有不同程度减少病毒空斑形成的作用。可见具有治疗传染病作用的中药除含有效物质杀灭、抑制病毒外 ,还能激发机体抗感染的免疫力 … 相似文献
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微量元素与动物免疫的关系十分密切,是动物不可缺少的营养,其直接参与动物机体的细胞免疫和体液免疫,对于维持动物中枢免疫器官和外周免疫器官的结构和功能起着重要的作用。微量元素作为动物机体必需的营养组分已得到广泛的认可。近年来的研究结果表明,微量元素对于动物机体的免疫机能也具有十分重要的作用。微量元素不仅直接影响动物免疫器官的发育,影响动物的特异性和非特异性免疫功能。而且对于机体内微生物的生长、繁殖、代谢及毒素的产生也具有十分重要的调控作用。当动物体内缺乏微量元素时,会出现免疫机能减弱,抗病力下降等一系列问题。 相似文献
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不同产地中药铁、锰、铬含量的测定 总被引：2，自引：0，他引：2
中药的有效成分包括有机成分和无机微量元素,它们是中药药理功能的物质基础.中药的药理作用与微量元素的含量及存在状态密切相关[1].用现代科学方法研究中药与微量元素的关系,对揭示和阐明中药有效成分的作用机理具有重要意义.现代医学证明,微量元素作为机体的营养物质与机体的生长发育、疾病防治有着密切的关系,微量元素的缺乏或过多,都会导致机体生理机能失调,甚至引起疾病[1].在人和动物机体中的15种必需微量元素中,铁、锰、铬对动物的生长发育、造血功能、物质代谢和免疫机能有着重要作用[3,4].中药产地的不同,其微量元素的含量亦不同[5].因此测定中药微量元素的含量也为鉴定道地中药材及开发新资源提供了新的途径. 相似文献
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白藜芦醇具有广泛的药理学功能，能通过提高机体的特异性和非特异性免疫，促进免疫细胞增殖和细胞因子产生，增强吞噬细胞功能，从而提高机体免疫力。就白藜芦醇对动物免疫机能的影响作一阐述。 相似文献
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饲料营养对动物免疫机能的影响初探 总被引：2，自引：0，他引：2
文章综述了近年有关饲料养分（蛋白质、脂肪、碳水化合物）对动物免疫机能影响的研究，强调了营养因素在机体免疫过程中所起的重要作用。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献