雏鸡法氏囊病的综合防制     

郑传斌  侯建辉 《畜牧兽医科技信息》2011,(6)

鸡传染性法氏囊病是由法氏囊病毒引起雏鸡的一种急性高度接触性传染病.鸡法氏囊病毒主要感染雏鸡,12周龄以后法氏囊退化的鸡只发生隐性感染.在自然情况下2～15周龄均可发病,有时可提前到1周龄内,以3～6周龄多发,其中4周龄最易感.  相似文献   

雏鸭病毒性肝炎的诊治     

毕玉林  郭晶 《中国畜禽种业》2012,8(4):137-137

近年来．随着海城市养鸭数量的不断增加，鸭病的发生也显上升趋势。特别是以雏鸭发病急、死亡率高，肝脏肿大和出血性斑点为特征的鸭病毒性肝炎常常发生．给养鸭户带来较大的经济损失。该病经流行病学，临床观察，病理变化和实验室检查可诊断，对发病鸭群注射鸭病毒性肝炎高免卵黄抗体可使病情得到控制。现简介如下：  相似文献   

血凝抑制试验(HI)在鸡病临诊中的应用     

梅锡朝 《上海畜牧兽医通讯》2012,(1):50-51

血凝与血凝抑制试验作为一种常用的血清学试验方法,通过对鸡血清或卵黄中疫病特异性抗体的测定,可以证实鸡现在和过去是否受到传染性病原体的感染。抗体测定是检查疫病感染最有效、最经济的方法。对于不具备病原学检测能力的县乡兽医机构及诊疗组织,此方法显得更具实际应用价值。笔者多年来除客观反映鸡群抗体水平和免疫效果,指  相似文献   

鸡传染性法氏囊病的诊断与防治     

陶得和  漆晶晶  孔垂永 《畜牧兽医杂志》2010,29(2):104-105

2009年10月19日，武威市羊下坝镇某养殖小区饲养3300只6周龄罗曼鸡，3d前突然发病，迅速传播，死亡鸡剧增，3d内死亡674只，死亡率达20．4％。根据临床症状和剖检变化确诊为鸡传染性法氏囊病（IBD）。经过采取注射高免卵黄抗体和中药治疗的综合性措施，7d内控制了病情，现将诊治情况报告如下：  相似文献   

黄颡鱼大规格鱼种高产培育技术     

李浩  吴一春  薛德龙  徐汉连 《水产养殖》2012,33(8):28-29

黄颡鱼隶属鲶形目,鮠科,黄颡鱼属,又名黄腊丁、昂刺骨,是江河湖泊中常见的小型底栖鱼类,肉质细嫩、味道鲜美、深受消费者喜爱,近年来,随着消费市场的增长,价格一直较高,养殖效益较好,已成为特种水产养殖的优良品种,但因受苗种资源的限制,规模养殖效益一直不大。为加大黄颡鱼大规格鱼种的市场供给,2010—2011年,笔者进行了大规格鱼种集约化培育生产试验,取得了明显的成效,在黄颡鱼卵黄苗放养密度10万~12万尾/667m2情况下,鱼苗养成大规格鱼种的平均成活率达  相似文献   

鸭坦布苏病毒冻干高免卵黄抗体的研制     

王红琳  卢琴  罗青平  张蓉蓉  温国元  商雨  邵华斌 《养殖与饲料．饲料世界》2021,(3)

本研究用鸭坦布苏病毒病灭活苗三次免疫SPF蛋鸡,收取高免鸡蛋,制备成冻干高免卵黄抗体;用鸡胚中和试验和间接ELISA方法进行效价检测。试验结果显示,第3次免疫后2周,卵黄抗体中和效价为1∶103.5,4、5周达到最高值1∶104.5;间接ELISA方法检测冻干前后的抗体效价结果均为阳性;对鸭坦布苏病毒强毒的攻毒保护率达100%,可为鸭坦布苏病毒的防控提供一种有效的冻干高免卵黄抗体制剂。  相似文献   

冻干粉针剂之注射用卵黄抗体在鸡传染方面的研究与应用     

要瑞丽 《兽药市场指南》2021,(3):7-10

鸡传染性法氏囊病是由传染性法氏囊病毒引起的一种急性、接触传染性疾病,也可叫做鸡传染性腔上囊病。该病毒属于双RNA病毒科,包括2个血清型,其中以法氏囊内淋巴细胞严重受损、法氏囊发炎、坏死、萎缩为主要特征,进而使鸡免疫机能受到障碍,从而干扰所有疫苗种类的免疫效果。  相似文献   

Study on the Change Rule of Egg Yolk Antibody in Laying Hens after First Immunization by Japanese Encephalitis Virus     

WANG Chao-qun  FANG Xu  SONG Zi-yu  HUANG Yan  PANG Jie  ZHAO Jian-guo 《中国畜牧兽医》2016,43(10):2786-2791

The purpose of this experiment was to study the immunization rule of the egg yolk antibody affected by different vaccines,immunization dose and injection ways and further to discuss the optimal immunization procedures of the laying hens for the preparation of egg yolk antibody against swine Japanese encephalitis virus.180 brown laying hens without any vaccines were selected and divided into 18 groups randomly,each group of 10 hens.Groups 1,2 were the control groups,injected with the sterile saline;Groups 3 to 10 were injected with subcutaneous or intramuscular injection,and the vaccine was injected with 0.2,0.5,1.0 and 1.5 mL successively.Groups 11 to 18 were also adopted two kinds of injection,followed by the same dose of vaccine immunization.Six eggs of each experimental group were gathered before immune day and after 3,7,10,14,18,21 and 28 days,the egg yolk antibody was extracted and the titer was determined.As a result,the egg yolk antibody titers of groups 1 to 6,11 and 12 were all 0,and no significant immune response produced;The hens from 7 to 10 groups were injected with the inactivated vaccine.After 7 days,the average antibody titer reached the peak,and the duration of the antibody was 14 days.The hens from 13 to 18 groups were injected with the attenuated virus vaccine.After 14 days,the average antibody titer reached the highest value,and the duration of the antibody was 21 days.The egg yolk antibody titers were not significantly different in the two compared experiment groups with the same injection dose but with different injection ways (P>0.05).With the same injection way of each experiment group,and the difference was significant (P>0.05).Compared with some groups with the same injection and vaccine,the titer of yolk antibody was gradually increased with the increase of the immune dose,and the difference was significant (P<0.05).The results showed that,no matter intramuscular or subcutaneous injection,in order to produce a significant immune response to hens,the immune antigen dose was 1.0 mL inactivated vaccine or 0.5 mL attenuated vaccine at least.Compared with the attenuated and inactivated vaccine,inactivated vaccine stimulated the body to produce the antibody faster,but the maintenance time was shorter;The lower dose of attenuated vaccine could stimulate the body to produce antibodies,but the speed was slower,the maintenance time was longer.  相似文献   

猪瘟病毒四种不同抗原卵黄抗体中和效力评价     

江馗语 《兽医导刊》2016,(16):210-211

本研究通过基因工程技术,在大肠杆菌中高效表达了含猪瘟病毒E2基因中抗原指数较高且含有中和性抗原域的A1/A2区以及B、C区中抗原性较高、命名为tE2的重组蛋白和猪瘟病毒重复中和表位4P1重组蛋白、4P2重组蛋白,将上述3种重组蛋白和猪瘟活疫苗与白油佐剂混合乳化作为免疫原分别免疫产蛋鸡制备抗猪瘟病毒卵黄抗体,并对抗体效价和对猪瘟病毒的中和作用进行了检测和初步研究。  相似文献   

牛轮状病毒疫苗及被动免疫抗体研究进展     

高敏  付山  赵绮欢  杨霖  贺志雄  包福祥 《中国兽医学报》2023,(11):2383-2388

牛轮状病毒(bovine rotavirus, BRV)是集约化养殖中犊牛腹泻的重要致病原之一。BRV是一种二十面体对称的双链RNA病毒,其基因组含有多种结构蛋白和非结构蛋白,并分为众多血清型,流行型多为G6和G10型,具有较强的致病性。目前,国内BRV的商品化疫苗和针对性治疗产品仍处于市场空白阶段。随着养牛业的蓬勃发展,对于BRV的防治已经迫在眉睫。对BRV的结构特点、传播途径、以及养牛业发达国家市场上的BRV疫苗上市情况和BRV卵黄抗体的研究进程进行综述,旨在为下一步疫苗和抗体的研发应用提供一定的参考。  相似文献