共查询到20条相似文献，搜索用时 375 毫秒
1.
动物园珍禽禽流感和新城疫免疫抗体检测 总被引：1，自引：0，他引：1
为了评估禽流感和新城疫免疫效果,用血凝抑制试验(HI)对动物园圈养的19种珍禽的55份血清进行了禽流感、新城疫免疫抗体监测。监测结果表明:珍禽禽流感H5亚型、H9亚型免疫合格率分别为61.82%、66.67%,新城疫免疫合格率为56.36%,均未能达到免疫合格率70%以上的要求;禽流感H5亚型、H9亚型和新城疫平均抗体水平分别为5log2、4.5log2、5.18log2。因此,应及时加强禽流感和新城疫的免疫,并加强综合防控措施,以降低珍禽感染发病的风险。 相似文献
2.
为了解流通领域家禽新城疫的免疫效果和禽流感免疫效果及带毒情况,2013年7-9月,在肥东县某家禽交易市场,采集不同来源、品种和养殖模式家禽的血样和对应棉拭子样品（咽喉、泄殖腔双份）600份,采用微量红细胞凝集抑制试验（HI）分别进行新城疫和禽流感抗体检测,检测结果：H5亚型高致病性禽流感平均免疫抗体合格率54.39%;新城疫平均免疫抗体合格率86.92%;H7亚型禽流感抗体结果均为阴性。结果表明规模场和农户新城疫的总体免疫效果要好于禽流感;散养户禽流感（H5亚型）、新城疫和水禽禽流感（H5亚型）的免疫效果不好;家禽禽流感（H7亚型）的感染率很低,家禽交易市场应坚持做好常规消毒和病死家禽的无害化处理工作。 相似文献
3.
2022年8月,山东省成为全国首个免疫无口蹄疫区和无高致病性禽流感的“双病”无疫省。为继续维持无疫状态,也为了解武城县2022年禽流感病毒的免疫效果状况,同时了解禽流感病毒的分布情况,本研究对武城县9个乡镇街的养殖场进行禽流感免疫抗体和病原学随机采样,并对免疫抗体监测结果和病原学监测结果进行分析。抗体监测结果显示,武城县禽流感H5亚型免疫抗体合格率达到了100%,禽流感H7亚型免疫抗体合格率达到了97.91%;病原学监测结果显示,14个场点均为阴性,没有出现阳性病例。本研究为武城县禽流感疫情防控、科学制定本县的免疫方案及补免工作提供科学的数据支撑。 相似文献
4.
5.
为监测河南省高致病性禽流感免疫抗体和野毒感染情况,笔者按照《河南省2022年动物疫病监测与流行病学调查计划》的要求,采用HI试验检测禽流感免疫抗体,采用荧光RT-PCR方法检测病毒核酸,在全省开展禽流感专项监测工作。结果表明,河南省高致病性禽流感免疫抗体群体合格率为93.2%,禽流感H5亚型平均个体抗体合格率为94.04%,H7N9亚型平均个体抗体合格率为96.32%。不同地区的禽流感H5亚型和H7N9亚型免疫抗体合格率均>90%,种禽场、商品代场和屠宰场采集的血清样本免疫抗体合格率均在92%以上。未检出H5亚型和H7亚型禽流感病毒核酸。共检出76份禽流感病毒H9亚型阳性样本,阳性率为2.07%。结果表明,河南省高致病性禽流感整体防控效果良好,免疫抗体水平均高于国家标准;未检出高致病性禽流感病毒,但有低致病性禽流感感染的现象。本次调查将为河南省进一步做好禽流感防控工作提供数据支撑。 相似文献
6.
《养殖与饲料．饲料世界》2016,(2)
为了探讨种鸡场禽流感和新城疫母源抗体消长规律,制定科学的免疫程序,本试验对父母代种鸡和出壳当日蛋雏鸡进行禽流感和新城疫抗体检测以及对1、8、15、22及29日龄蛋雏鸡进行禽流感H5、H9亚型和新城疫母源抗体跟踪检测。结果表明,父母代种鸡禽流感和新城疫免疫抗体水平较高,且通过卵黄传递给蛋雏鸡,使其产生较高的母源抗体抵抗病毒侵袭。同时发现蛋雏鸡在出壳当日禽流感和新城疫母源抗体水平最高,均达到6log2以上,且群体抗体合格率均达90%以上,随后母源抗体逐渐下降,在15日龄时禽流感H5亚型和新城疫母源抗体下降到抗体保护水平以下,22日龄时禽流感H9亚型母源抗体也已下降到抗体保护水平以下,因此在15日龄时进行禽流感H5亚型和新城疫首免,在22日龄时进行禽流感H9亚型首免,可以有效降低禽流感H5和H9亚型和新城疫的发生风险。 相似文献
7.
2017年7月7日,农业部决定对全国家禽开展H7亚型流感免疫。为了掌握重组禽流感病毒(H5+H7)二价灭活苗的免疫效果,2017年8—9月,重庆市动物疫病预防控制中心进行了控制性试验和大面积临床监测。控制试验结果表明:首免15 d后,H7亚型禽流感抗体合格率可达70.00%,H5亚型抗体合格率仅为10.00%;首免22 d后,H7亚型禽流感抗体合格率达到93.33%,H5亚型抗体合格率达到60.00%;该疫苗未出现严重免疫副反应;H7亚型禽流感抗体产生的时间早于H5亚型。随机选取5个区县,采集414份免疫血清进行监测。结果显示:二价灭活苗免疫21 d后,H5和H7亚型禽流感抗体平均合格率分别为92.27%和76.00%;5个区县的抗体水平存在差异;蛋鸡抗体水平高于肉鸡。控制试验及临床监测结果提示,该疫苗免疫效果确实,但部分区县仍存在免疫抗体水平不高的养禽场。因此,在新旧疫苗交替使用期间,各地应高度重视高致病性H5和H7亚型禽流感防治工作,尤其是肉鸡。 相似文献
8.
为科学评估柳州市规模化养殖环境下肉鸭的高致病性禽流感（H5和H7亚型）免疫抗体水平和疫情发生风险,采用血凝抑制试验（HI）和荧光PCR方法,对2021年全市各县区肉鸭规模养殖场采集血清样品、喉头/泄殖腔棉拭子分别进行抗体和病原检测,并对检测结果进行不同血清型、不同县区、不同季度的统计对比分析。结果显示：H5亚型免疫抗体总合格率为76.48%（3 472/4 540）,平均滴度为5.52log2,H7亚型免疫抗体总合格率为68.00%（3 087/4 540）,平均滴度为4.20log2;经卡方检验,H5亚型免疫抗体总合格率显著高于H7亚型（P＜0.01）。所有病原样品中均未检测到H5和H7亚型高致病性禽流感病毒。禽流感免疫抗体合格率在不同区域间存在一定差异,其中县级地区的免疫抗体总合格率显著高于城区（P＜0.01）。不同季度的禽流感抗体总体合格率依次为第四季度＞第二季度＞第一季度＞第三季度。结果表明：柳州市规模肉鸭养殖场的H5、H7亚型禽流感免疫效果整体良好,发生高致病性禽流感的风险较低;但仍需全年持续加强禽流感免疫监测和风险评估,部分城区应着重做好补免和加强免疫工作,从而构筑有效的免疫屏障,防止禽流感疫情发生,保障养禽业健康发展。 相似文献
9.
高致病性禽流感（highly pathogenic avian influenza, HPAI）和新城疫（newcastle disease, ND）等烈性传染病对养禽业危害严重,是养禽业需重点防控的疾病,其中HPAI是国家规定的强制免疫疫病。武汉市新洲区为家禽养殖大区,有规模禽场350余家,养殖规模近1140万只。为了解2021年度武汉市新洲区规模养殖场高致病性禽流感和新城疫免疫抗体合格率,武汉市新洲区农业技术推广服务中心连续12个月对辖区内规模鸡场进行蛋样抽检,运用血凝和血凝抑制试验,分别检测了高致病性禽流感H5亚型、H7亚型和新城疫的免疫抗体。结果显示,高致病性禽流感H5亚型、H7亚型和新城疫的整体免疫抗体合格率分别为94.1%、96.4%和88.9%,均达到了农业农村部规定的免疫抗体合格率不低于70.0%的标准。 相似文献
10.
11.
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
12.
13.
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
14.
15.
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
16.
17.
18.
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
19.
20.