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1适当使用具有免疫增强作用的中草药许多中草药可提高机体的抗体水平及免疫力。补益类中药大多具有相同的成分如多糖类,像黄芪多糖,人参多糖,党参多糖等,大多具有提高机体免疫功能的作用。清热解毒类如黄连,黄芩,黄柏,大蒜,穿心莲,板蓝根等具有增强家禽机体免疫功能,有效地抑制病原菌的繁殖,对传染病具有防治作用。 相似文献
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1免疫促进剂
中医免疫学中指出中草药中补气、补血、补阴、补阳等药材,对低下的免疫反应有促进作用,能提高机体免疫系统的功能,增强机体的免疫力,促进免疫反应向着有利于机体的方面进行,达到治愈疾病的目的。凡具有上述作用的中药,都可称为中药免疫促进剂。 相似文献
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具有抗病毒和促进免疫功能的兽用中草药 总被引：1，自引：0，他引：1
《浙江畜牧兽医》2021,(1)
正中兽医历史悠久,中药源远流长,现有中药品种2万多种,如能合理的开发利用,为畜牧业发展和防治畜禽疾病有广阔的前景,且大有可为。现将目前研究利用的抗病毒和促进免疫功能的中药阐述如下,希望对养殖业发展有所裨益。1 抗病毒中草药的使用机制这类中草药直接抑制或杀死体内病毒,抑制病毒的生物合成,阻止病毒穿入细胞或抑制病毒释放,增强宿主抗病能力,增强机体免疫功能。特别是植物活性多糖制剂,经国家权威机构药理,药效研究证明具有激活、 相似文献
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我历史悠久,中药源远流长,现有中药品种2万多种,如能合理的开发利用,为畜牧业发展和防治畜禽疾病有广阔的前景,且大有可为。现将目前研究利用的抗病毒和促进免疫功能的中药阐述如下,希望对养殖业发展有所裨益。一、抗病毒中草药的使用机制本品能直接抑制或杀死体内病毒;抑制病毒的生物合成阻止病毒穿人细胞或抑制病毒释放;增强宿主抗病能力;增强机体免疫功能。特别是植物活性多糖制剂,经国家权威机构药理、药效研究证明,具有激活、增加和调节机体免疫能力和抵抗肿瘤,抗炎、抗病毒,修复自身免疫性疾病的功效。 相似文献
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免疫增强剂也称免疫佐剂,是一类单独或与抗原同时使用,通过不同作用方式,如增强巨噬细胞活性、抗原物质的免疫原性和稳定性及促进抗体的合成与分泌等,进而增强动物机体非特异性和特异性免疫的物质。研究表明,免疫增强剂能提高动物自身免疫力,消除动物免疫抑制,增强动物对细菌和病毒性传染病的抵抗力。近年来,国内外学者都在寻找特异性 相似文献
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中药添加剂对仔猪cAMP/cGMP及免疫功能的影响 总被引：5，自引：0，他引：5
中药饲料添加剂具有天然性、多功能性、无毒副作用和无抗药性的特点兼优点 ,既可以提高动物的生产性能 ,又能改善动物产品的品质[1] 。对中药免疫作用的药理研究表明 ,很多扶正中药具有促进免疫的作用、激素样作用、适应原样作用和双相调节作用 ,尤其在增强机体的非特异性免疫功能如促进网状内皮系统的吞噬功能方面 [2 ]。虽然已有大量关于中药饲料添加剂对畜禽生长影响的报道 ,但大多集中在生长速度及饲料转化率方面 ,而对动物机体免疫功能及 c AMP/c GMP调节作用等的研究 ,没有象对单味中药研究那样深入 ,且鲜有报道。本研究根据中兽医… 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