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1.
小白鼠肝脏发现细颈囊尾蚴一例 总被引：1，自引：0，他引：1
２００１年４～６月，笔者在进行对饲养的１８０只３月龄实验小白鼠进行剖检时，发现其中一只小白鼠肝脏浆膜上有一绿豆大小的乳白色泡囊，呈半园形突出于肝脏表面，泡囊壁底侧部见有别针头大小、不透明的白色结节，刺破泡壁流射出透明的液体。根据资料，细颈囊尾蚴病的病原体是泡状带绦虫的幼虫阶段———细颈囊尾蚴所引起的。成虫主要寄生在犬、狼等肉食动物的小肠里，幼虫寄生在猪、黄牛、绵羊、山羊等多种家畜的肝脏浆膜和肠系膜等处。家畜感染细颈囊尾蚴，主要是吞食了带有泡状带绦虫的犬、狼等动物排出的粪便中的绦虫节片或虫卵而引起… 相似文献
2.
细颈囊尾蚴病是由泡状带绦虫的幼虫寄生于绵羊的肝脏浆膜、大网膜及肠系膜所引起的绦虫蚴病。成虫泡状带绦虫寄生于犬小肠内,虫卵随粪便排出,感染羊只[1]。绵羊细颈囊尾蚴病分布广,发病率高 相似文献
3.
对来自黑龙江省１７个市,县的１５６头猪进行了绦虫蚴感染情况调查,并对其中５个市,县的５０头犬进行了绦虫感染情况调查。结果,细颈囊尾蚴,辣球蚴,猪囊尾蚴的感染率 ５０．６％,４．５％和３．２％;犬泡状带绦虫,细粒棘球绦虫的感染率分别为２４．０％和４．０％。 相似文献
4.
犬是多种绦虫的终宿主,是人畜多种囊尾蚴病的传染来源。各种囊尾蚴病对人畜危害是严重的。为此,应该把犬的驱绦工作纳入正常的家畜防疫日程,并做为保护人畜健康的一项措施来完成。犬体内对人畜危害最大的绦虫有四种,即:泡状带绦虫、多头绦虫、细粒棘球绦虫、豆状带绦虫。由于这些绦虫幼虫的寄生,可引起宿主发病,生长发育受阻,甚至死亡,宰后畜体往往废弃大量脏器-据1979—1981年里黑龙江省对17个市、县寄生虫抽样调查研究资料表明,犬绦虫所造成的危害是严重的。犬泡状带绦虫的寄生率占调查犬数的26%,细粒棘球绦虫的寄生率占调查犬数的3%。而猪细颈囊尾蚴的寄生率占调查犬数的50.6%、羊18.1%、 相似文献
5.
关向晖 《畜牧兽医科技信息》2019,(5):58-58
1羊细颈囊尾蚴病细颈囊尾蚴病是由泡状带绦虫的幼虫-细颈囊尾蚴寄生于猪、羊、黄牛等多种动物体内引起的一种寄生虫病。细颈囊尾蚴的大小并不一致(从豆粒大至鸡蛋大),呈囊泡状,具有透明外观,囊壁上附有一个黄白色、细长的颈部头节。细颈囊尾蚴的成虫为泡状带绦虫,常寄生于犬科动物(犬、狼、狐狸)等肉食性动物的小肠内。本寄生虫病呈世界性分布,凡有养犬的地方都有发病报道。在我国的家畜中以猪的发病最为普遍,绵羊多发病于集中放养的牧区,据估测其感染率可达25%,其中以2~12月龄的绵羊感染率最高,但死亡率较低。 相似文献
6.
羊细颈囊尾蚴病是由泡状带绦虫的幼虫——细颈囊尾蚴寄生于中间宿主羊(猪、牛等动物)的肠系膜、网膜、浆膜、肺脏、肝脏等处而引起的绦虫的幼虫病。细颈囊尾蚴呈豌豆大到鸡蛋大的泡囊状,乳白色,囊内充满囊液,囊壁上有1个乳白色头节和颈部。在临床症状常不明显,一般仅见屠宰后内脏上附着囊泡状的细颈囊尾蚴,常呈水泡状向下悬垂着,俗称“水铃铛”或“水淋子”。成虫寄生于终末宿主犬、狼等兽的小肠内。成熟孕卵节片脱落并随粪便排到外界,被中间宿主吃掉后,六钩蚴在小肠内逸出,钻入肠壁,随血流到肝、网膜、肠系膜等处引起细颈囊尾蚴病。但… 相似文献
7.
细颈囊尾蚴寄生在猪、牛、羊、犬等多种主要的肉用动物体内,一定程度上可降低肉品品质,对人体健康构成一定的威胁。1病原猪细颈囊尾蚴是由泡状带绦虫的幼虫———尾蚴引起的,分布甚广,为家畜常见寄生虫, 相似文献
8.
家兔豆状囊尾蚴病是由豆状带绦虫的中期幼虫--豆状囊尾蚴寄生于兔的大网膜、肝脏、肠系膜和腹腔内引起的一种绦虫蚴病。该病呈世界性分布,我国有10多个省市均有该病的发生。豆状囊尾蚴是寄生在犬、猫、狐狸等动物的小肠内的豆状带绦虫的幼虫,犬、猫、狐狸等动物是豆状带绦虫的终末宿主,这些动物感染豆状囊尾蚴2个月后即可随粪便排出豆状带绦虫成熟的节片和虫卵,虫卵遇温度和湿度适宜时发育为六钩蚴,家兔因吞食了被节片和虫卵污染的饲料和饮水很容易被感染。感染后六钩蚴经肠管钻出肠壁,游离于腹腔或附着于腹腔器官,或随血液循环到达肝脏。家兔成为豆状带绦虫的中间宿主。 相似文献
9.
羊细颈囊尾蚴病的防治 总被引：1，自引：0，他引：1
细颈囊尾蚴病是由泡状绦虫的蚴虫——细颈囊尾蚴寄生于羊的肝脏浆膜、网膜及肠系膜所引起的绦虫蚴病,成虫泡状带绦虫寄生于狗的小肠内,成虫卵随粪便排出,感染羊只。羊细颈囊尾蚴病分布较为广泛,特别是以狗放牧为助手的地区,发病率更高,可达20%以上,死亡率一般不高。但是,被感染羊只长期消瘦,极大影响羊的生产性能。现将我们对本病的防治情况报告如下。1发病情况2004年秋,我们引入150只绒山羊。2005年春,羊只开始发病,有部分羊只逐渐消瘦、虚弱。开始以为营养不足,就加量补充精料,饮豆浆水,发病羊只病情有所减轻,期间无羊只死亡,到5月份开始… 相似文献
10.
《畜牧兽医科技信息》2021,(8)
正羊细颈囊尾蚴病是一种寄生虫病,这种病容易感染2～12月龄的羊群。在感染过后,会严重影响到羊群的生长发育,使得羊群的机体不断消瘦、虚弱,发生器质性的损害,最终导致死亡,影响到养羊行业的经济效益。对此,需要做好该病的综合性防治。1发病原因羊细颈囊尾蚴病的病原是泡状带绦虫,感染该虫主要是食用了患病动物的内脏。该虫体在宿主体内发育成熟,进一步将其孕节片排到体外,容易感染到饲料、放牧地、圈舍、 相似文献
11.
异源性抗原抗猪囊尾蚴感染的研究 总被引：1，自引：0，他引：1
本文报道了泡状带绦虫活化六钩蚴的超声裂解抗原可以诱导猪体产生抗猪带绦虫攻击感染的交叉保护作用。猪囊尾蚴匀浆抗原也使猪体产生了较强的抗猪带绦虫攻击感染的保护作用。泡状带绦虫六钩蚴超裂抗原免疫组与猪囊尾蚴匀浆抗原免疫组的保护情况是相似的,这表明异源免疫也可使猪体产生较好的抗猪囊尾蚴感染的免疫。由于制备异源性抗原的泡状带绦虫能够从狗的体内获得,因此在体外培养猪带绦虫未获成功之前可以解决从人体获取猪带绦虫的困难。 相似文献
12.
Prevalence and seasonal incidence of larval and adult cestode infections of sheep and goats in eastern Ethiopia 总被引：1，自引：1，他引：0
A study on the prevalence and seasonal incidence of cestode parasite infections of sheep and goats was carried out in eastern Ethiopia for 2 years (May 2003-April 2005). During this period, viscera including liver, lungs, heart, kidneys and the gastro-intestinal tract were collected from 655 sheep and 632 goats slaughtered at four abattoirs located in the towns of Haramaya, Harar, Dire Dawa and Jijiga. At the abattoirs the abdominal, thoracic and pelvic cavities as well as the muscle surfaces of all animals were visually examined for the presence of larval (cystic) stages of cestode parasites. The viscera were transported within 24 h to the parasitology laboratory of Haramaya University and were examined for larval and adult cestodes following standard procedures. The most prevalent metacestodes (larval cestodes) were Cysticercus ovis (Taenia ovis), Cysticercus tenuicollis (T. hydatigena) and hydatid cysts (Echinococcus granulosus). In sheep, the overall prevalence was 26% for C. ovis, 79% for C. tenuicollis, and 68% for hydatid cysts. Similarly, for goats, the corresponding prevalence was 22%, 53% and 65%, respectively. The difference between sheep and goats in prevalence of C. tenuicollis was significant. The high prevalence of hydatid cysts in both sheep and goats indicates that cystic echinococcosis/hydatidosis is a public health problem in these regions which requires implementation of control measures, including public health education, strict meat inspection and control of stray dogs. The results of the survey also implies that infections of small ruminants with these metacestodes are responsible for condemnation of substantial quantities of affected organs and muscles and therefore of direct economic importance. Intestinal infections with adult tapeworms of Moniezia expansa, Avitellina centripunctata and Stilesia globipunctata, and bile duct infections with Stilesia hepatica were also common in both sheep and goats. In sheep, the overall prevalence of these tapeworms were 61%, 20%, 24% and 39%, respectively. Similarly, the overall prevalence of these parasites in goats was 53%, 21%, 27% and 36%, respectively. 相似文献
13.
Specific antibody responses to Taenia hydatigena, Taenia pisiformis and Echinococcus granulosus infection in dogs 总被引：1，自引：0，他引：1
Groups of dogs reared free of both nematodes and cestodes were infected with Taenia hydatigena, Taenia pisiformis or Echinococcus granulosus. After infections with the Taenia spp became patent, dogs were purged to remove the worms. They were later reinfected and the second infections again removed by purging after patency. A group of 3 uninfected worm free dogs was kept as age-matched controls. The dogs were bled at intervals of 5 days and their serums tested for antibodies using the enzyme-linked immunosorbent assay (ELISA) with excretory/secretory (ES) antigens collected during in vitro incubation of evaginated scoleces (scolex ES antigen) and oncosphere antigens. Antibodies to scolex ES antigen were detected by 3 weeks after infection with each cestode species whereas antibodies to oncosphere antigen were not detected until about one week after eggs were found in the faeces of the infected dogs. Antibody responses to both oncosphere and scolex ES antigens decreased rapidly following removal of the worms by purging. Uninfected control dogs were invariably negative to both oncospheral and scolex ES antigens. There were cross-reactions between the serums from dogs infected with T. pisiformis and T. hydatigena when tested with scolex ES antigens, but oncospheral antigens showed a high degree of species specificity. Scolex ES antigens from E. granulosus were compared with those prepared from T. hydatigena and T. pisiformis for their ability to discriminate between antibodies in serums collected from dogs 31 and 32 days after infection with 100,000 protoscoleces of E. granulosus or dogs infected with Taenia spp.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
14.
J. B. WHITE F.R.C.V.S. F.A.C.V.Sc G. de CHANEET B.V.SC. 《Australian veterinary journal》1976,52(2):73-79
A survey of the cestode infections of 304 dogs from 134 properties in the Albany area of Western Australia was performed. Purgation was induced by oral administration of arecoline and the purge examined for cestodes. The cestodes found and their infection rates were: Dipylidium caninum 16.4%; Taenia spp 36.5%; T. ovis 8.9%; T. hydatigena 15.1%; T. pisiformis 15.1%; T. serialis 2.3%; Echinococcus granulosus 0.7%; Questionnaires completed on 133 of the 134 properties at the time the dogs were purged showed that:– 73.6% of farmers were feeding raw sheep-meat and 24.8% were feeding raw offal to their dogs; dogs were treated on a regular basis with a cestocide on 23.3% of properties; dogs were allowed to roam on 21.8% of the properties and stray dogs were considered prevalent on 23.3% of properties.
Suggestions for control of Cysticercus ovis are made based on an interpretation of the significance of these findings. 相似文献
Suggestions for control of Cysticercus ovis are made based on an interpretation of the significance of these findings. 相似文献
15.
A sandwich-ELISA was developed for the detection of soluble Taenia hydatigena antigens in fecal samples of dogs. Affinity-purified polyclonal catching antibodies and alkaline phosphatase-conjugated detecting antibodies were employed, which had been obtained from rabbits hyperimmunized with excretory/secretory antigens derived from in vitro maintained adult Taenia hydatigena. The assay allowed the detection of 800 ng T. hydatigena antigen g-1 of feces as a lower limit. Six helminth-free dogs were each infected with 10 T. hydatigena cysticerci isolated from Swiss sheep. After prepatent periods ranging from 57 to 71 days, the dogs started to excrete Taenia eggs and/or proglottids. The ELISA detected Taenia antigens in all six dogs during the prepatent period starting individually between Day 18 and 45 post-infection (p.i.). Anthelmintic treatment of three dogs at Day 95 p.i. resulted in elimination of the cestodes and within the 5 following days in the disappearance of Taenia antigens from feces. The specificity of the assay was evaluated by testing crude antigens derived from helminths or bacteria. Four Taenia species showed cross-reactivity at concentrations of 5 micrograms protein ml-1. Conversely, no cross-reactions occurred with various antigen batches derived from Echinococcus granulosus, E. multilocularis, Dipylidium caninum, Mesocestoides corti, Diphyllobothrium sp., Toxocara canis and bacterial antigens (Salmonella and Escherichia). Moreover, fecal samples from dogs naturally infected with T. canis (n: 13), hookworms (n: 2), Trichuris vulpis (n: 13) and of 10 dogs with mixed infections with these three nematode groups were tested, and results confirmed the high degree of specificity. The Taenia antigens detectable by this ELISA remained immunologically stable in native feces stored at +25 degrees, +4 degrees or at -20 degrees C for at least 5 days. 相似文献
16.
Tapeworms 总被引：2，自引：0，他引：2
J R Georgi 《Veterinary Clinics of North America: Small Animal Practice》1987,17(6):1285-1305
Dogs and cats become infected with tapeworms by ingesting intermediate hosts that contain encysted juvenile tapeworms called larvae. The dog or cat is said to be the definitive host because it shelters the sexually reproductive, egg-producing stage of the tapeworm. The intermediate hosts, which are vertebrates in the case of Taenia and Mesocestoides and insects in the case of Dipylidium and Hymenolepis, become infected by ingesting unhatched but infective tapeworm eggs discharged in the feces of the dog or cat. The relatively less common Diphyllobothrium and Spirometra tapeworms discharge eggs that are undeveloped when passed in the feces and must fall into water to undergo development to the coracidium stage. Diphyllobothrium and Spirometra may have two or three aquatic intermediate hosts in series. The first of these, a copepod, ingests the free-swimming coracidium or ciliated oncosphere that has hatched from the egg. The final intermediate host containing the larva (plerocercoid) infective for the dog or cat is an aquatic vertebrate (fish, frog, water snake). Thus, dogs and cats become infected with tapeworms by eating uncooked meat or fish or by ingesting certain insects. These intermediate hosts are infected with juvenile tapeworms called larvae, which are the infective form for the dog or cat. The intermediate hosts, in turn, become infected by ingesting tapeworm eggs discharged in the feces of the dog or cat or, in the case of Diphyllobothrium and Spirometra, by ingesting coracidia that have subsequently developed in and hatched from such eggs. By far the most common tapeworms of dogs and cats in North America are D. caninum, T. pisiformis, and T. hydatigena. Therefore, the most common sources of tapeworm infection are, respectively, fleas, wild rabbits, and the uncooked meat and offal of ruminants and swine. Whenever a dose of tapeworm remedy is administered or dispensed, the client should be informed of these potential sources of reinfection. There is considerable overlap in the spectra of activity of currently available cestocides. Mebendazole, fenbendazole, niclosamide, bunamidine, and praziquantel are all effective against Taenia spp. Bunamidine is the drug of choice against Spirometra, Diphyllobothrium, and Mesocestoides. Praziquantel is the drug of choice against Echinococcus and Dipylidium. 相似文献
17.
Specificity of scolex and oncosphere antigens for the serological diagnosis of taeniid cestode infections in dogs 总被引：2，自引：0，他引：2
Groups of dogs raised free of helminths were monospecifically infected with the common nematodes Toxocara canis, Ancylostoma caninum and Trichuris vulpis. Serums from these dogs, and a group of dogs of unknown history but infected with Dirofilaria immitis and Dipylidium caninum, had levels of antibody to their homologous nematode antigens readily detectable by ELISA. No cross-reactions were apparent when these serums were tested by ELISA using oncosphere antigens of Taenia hydatigena, T. pisiformis and T. ovis, scolex excretory/secretory antigens of T. hydatigena, T. pisiformis and Echinococcus granulosus or protoscolex antigen of E. granulosus. 相似文献
18.
采集甘肃兰州市区宠物犬体内两株泡状带绦虫,运用分子生物学方法对其线粒体部分基因进行克隆,并使用基因分析软件Larsergene V7.1进行序列分析,结果发现这两株虫体同源性达到99.6%,与国内的泡状带绦虫广东虫株和甘肃虫株同源性分别达到98.7%和98.4%,鉴定为泡状带绦虫;与其他带科绦虫同源性均高于85%,低于88%。其中,与国内牛带绦虫同源性最高,为88%;与国内巨颈带绦虫同源性最低,只有85.1%。推断不同带科绦虫的cox1基因种间差异明显,在带科绦虫的分类上意义较大。 相似文献
19.
Eighty-five dogs were examined and the numbers and types of helminth parasites found were recorded. Forty per cent of the dogs were infected with one or more helminth parasites. The most prevalent helminths were the cestodes Dipylidium caninum (24.7%) and Taenia hydatigena (17.64%). Infections were evenly distributed with sex of host. Juvenile dogs were more commonly infected with Toxocara canis than adults whereas all other helminths were found more in adult dogs. 相似文献
20.
The effect of oxfendazole on Echinococcus granulosus and Taenia hydatigena infections in dogs 总被引：1，自引：0，他引：1
Trials with oxfendazole carried out on 120 dogs infected with either Echinococcus granulosus or Taenia hydatigena indicated that a single treatment significantly reduced the proportion of dogs infected with tapeworms. Diarrhoea occurred occasionally when the dose rate exceeded 20 mg/kg. 相似文献