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黄芪多糖和白花蛇舌草多糖对猪繁殖与呼吸综合征灭活疫苗免疫猪T细胞亚群及抗体水平的影响 总被引:1,自引:0,他引:1
为探讨黄芪多糖和白花蛇舌草多糖对猪高致病性繁殖与呼吸综合征灭活疫苗免疫猪T细胞亚群及抗体的影响,以黄芪多糖和白花蛇舌草多糖作为免疫增强剂联合猪高致病性繁殖与呼吸综合征灭活疫苗免疫仔猪,通过流式细胞仪检测猪外周血CD3+、CD4+、CD8+细胞百分比,并用ELISA法检测猪血清中抗猪繁殖与呼吸综合征病毒抗体水平。结果表明,黄芪多糖和白花蛇舌草多糖均能显著提高仔猪的CD3+、CD4+、CD8+淋巴细胞的百分比和特异性抗体滴度,即黄芪多糖和白花蛇舌草多糖均能提高猪高致病性繁殖与呼吸综合征灭活疫苗的免疫水平,且白花蛇舌草多糖提高免疫的效力与剂量有关。 相似文献
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为探讨白花蛇舌草多糖对小鼠免疫功能和生长发育的影响,本研究将60只雌性昆明小鼠随机等分为4组,1~3组分别以50、100和150 mg/kg 体重的白花蛇舌草多糖粗提物灌胃小鼠,连续给药7 d,第4组以等量的生理盐水灌胃,作为空白对照组。最后一次给药12 h后,各组小鼠用鸡新城疫弱毒疫苗接种,2头份/只,分别于给药结束后的7、14和21 d采小鼠外周血并分离淋巴细胞和血清。用淋巴细胞转化试验(CCK-8法)测定外周血淋巴细胞增殖能力;微量血凝抑制试验评价血清中新城疫抗体水平;测定各组小鼠体重;21 d测定小鼠腹腔巨噬细胞吞噬能力,并测定脾脏指数。统计学分析结果显示,白花蛇舌草多糖组小鼠的外周血淋巴细胞增殖能力、免疫抗体水平、腹腔巨噬细胞吞噬能力、脾脏指数和体重均显著高于对照组(P<0.05),且具有量效关系。结果表明,白花蛇舌草多糖能显著提高机体的特异性免疫和非特异性免疫功能,促进机体的生长发育。本试验结果为利用白花蛇舌草多糖开发保健产品提供了参考。 相似文献
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试验研究了芦荟多糖在猪繁殖与呼吸综合征疫苗免疫过程中对猪抗体的影响。试验选择35日龄二元杂交断奶试验猪,随机分为8组,选用高低两个剂量的芦荟多糖分别与PRRSV灭活苗、活疫苗联合使用,在免疫后的不同时段采血,进行PRRSV抗体检测。结果表明,芦荟多糖高低剂量在PRRSV灭活苗免疫的中后期差异显著(P<0.05),高剂量芦荟多糖组在免疫后第54 d抗体水平比对照组抗体高出73.5%;对于活疫苗,高剂量芦荟多糖能显著提高抗体水平,低剂量芦荟多糖对抗体的产生无显著作用(P>0.05)。试验结果显示,芦荟多糖联合PRRSV灭活苗免疫能显著提高抗体水平,但对活疫苗,只有高剂量芦荟多糖才能提高抗体水平。 相似文献
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在相同饲养条件下,对35日龄仔猪分别使用高致病性猪蓝耳病弱毒疫苗与灭活疫苗进行免疫接种。在接种当天、接种后28d、58d分别检测高致病性猪蓝耳病免疫抗体水平。结果显示,使用弱毒疫苗免疫的试验猪,其高致病性猪蓝耳病抗体上升速度和抗体水平均优于使用灭活疫苗的试验猪。弱毒疫苗可在接种后21~28d产生免疫力,免疫期为4个月。猪繁殖与呼吸综合征流行地区应该首先考虑使用弱毒疫苗。 相似文献
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猪瘟、猪伪狂犬病及猪繁殖与呼吸综合征的免疫试验 总被引:1,自引:0,他引:1
选择20日龄仔猪分组后于不同日龄应用猪瘟(CSF)、猪伪狂犬病(PR)及猪繁殖与呼吸综合征(PRRS)疫苗进行免疫,检测猪群免疫前后的抗体水平。结果显示,仔猪免疫猪瘟活疫苗的日龄有待进一步探讨,猪瘟抗体ELISA检测方法比IHA方法可靠;仔猪于20、30、40日龄时免疫猪伪狂犬病gE基因缺失活疫苗,均不会对母源抗体造成干扰;猪繁殖与呼吸综合征灭活疫苗以及高致病性猪蓝耳病灭活疫苗如何使用尚需探讨。 相似文献
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为了研究猪瘟(CSF)、猪伪狂犬病(PR)及猪繁殖与呼吸综合征(PRRS)疫苗免疫猪群前后的抗体水平及免疫干扰现象,试验取20日龄仔猪50头,分组后于不同日龄应用以上3种疫苗进行免疫,并检测猪群免疫前后的抗体水平;同时另取18头仔猪,以高致病性猪蓝耳病灭活疫苗免疫,作对照试验。结果表明:仔猪免疫CSF活疫苗的日龄有待进一步探讨,CSF抗体ELISA检测方法比IHA方法可靠;仔猪于20,304,0日龄时免疫PR gE基因缺失活疫苗,均不会对母源抗体造成干扰;PRRS灭活疫苗及高致病性猪蓝耳病灭活疫苗如何使用尚需探讨。 相似文献
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本研究旨在探讨黄芪多糖对猪瘟疫苗免疫的影响.把21日龄断奶仔猪分成4组,在2~4组仔猪基础日粮中分别添加浓度为2×10-4、3×10-4、4×10-4的黄芪多糖,连续饲喂7d;第1组日粮中不添加任何药物,作为空白对照组.用药结束后用猪瘟弱毒疫苗免疫,并于免疫后第1、3、5周分别用正向间接血凝抑制试验和流式细胞术检测外周血猪瘟抗体效价及淋巴细胞亚群动态.结果显示:与对照组相比,黄芪多糖能提高仔猪外周血猪瘟抗体水平1个滴度以上,具有提高CD3+、CD4+T淋巴细胞百分数的趋势.说明黄芪多糖能提高仔猪特异性免疫力,是良好的免疫增强荆. 相似文献
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为筛选免疫效价高的疫苗,获得高免血清并进行临床治疗观察。本试验选用3种猪繁殖与呼吸综合征疫苗免疫健康新西兰大白兔,免疫后分别采血和分离血清,并用猪蓝耳病毒抗体PPA-ELISA检测试剂盒检测血清抗体效价,筛选出抗体效价较高的两种疫苗;免疫猪,制得高免血清对自然发病仔猪进行高免血清治疗试验。免疫兔试验表明,猪繁殖与呼吸综合征活疫苗(CH-lR株)免疫后血清抗体效价最低,高致病性猪繁殖与呼吸综合征活疫苗(HuN4-F112株)血清(简称高致病疫苗血清)抗体效价比猪繁殖与呼吸综合征灭活疫苗(CH-la株)血清(简称灭活疫苗血清)低,用后两种疫苗免疫猪,血清抗体效价均能达到1∶1280。自然发病仔猪高免血清治疗试验显示,注射高致病疫苗血清对蓝耳病的治愈率为88%,灭活疫苗血清治愈率为76%。结果表明高免血清是无菌、安全的,所得两种血清可用于临床防治猪蓝耳病。 相似文献
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黄芪多糖注射液对猪瘟耐热保护剂活疫苗在兔体内免疫效果的影响 总被引:3,自引:3,他引:0
试验旨在研究黄芪多糖(astragalus polysaccharide,APS)注射液作为猪瘟疫苗稀释液及黄芪多糖作为疫苗佐剂提供数据支持。用1%的黄芪多糖注射液、猪瘟疫苗专用稀释液、生理盐水3种不同猪瘟疫苗稀释液稀释兔源猪耐热保护剂活疫苗免疫兔体,比较免疫后不同时间段内血液中的淋巴细胞的活性及血清中的猪瘟抗体、白介素2(interleukin 2,IL-2)、白介素6(interleukin 6,IL-6)、γ干扰素(interferon γ,IFN-γ)、新蝶呤(neopterin,Npt)水平,综合评价3种不同猪瘟疫苗稀释液对兔源猪瘟耐热保护剂活疫苗在兔体内免疫效果的影响。结果表明,黄芪多糖能不同程度的提高抗体水平和多种细胞因子的含量。因此,黄芪多糖注射液可以作为猪瘟疫苗稀释液或改良现有猪瘟疫苗稀释液,黄芪多糖也可以作为猪瘟疫苗佐剂。 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2%的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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