动物寄生虫病的分类、诊断与防治

1分类寄生虫是暂时或永久寄居于另一种生物的体表或体内，夺取被寄居者的营养物质，并给被寄居者造成不同程度危害的动物。寄生虫种类繁多，根据其与宿主的关系，可分为专性寄生虫、兼性寄生虫、体内寄生虫、体外寄生虫和机会致病寄生虫。     

徐州市郊散养奶牛消化系统寄生虫初步调查

本文采用饱和盐水漂浮法对徐州市郊区散养奶牛消化系统寄生虫进行了初步调查。粪检结果表明：该地区散养奶牛消化系统寄生虫的总感染率为83．19％(94／113)，所获寄生虫13种，隶属于10科13属。通过对各种寄生虫的感染率，不同调查点、不同年龄奶牛寄生虫的感染率及混合感染情况等进行分析，认为徐州市郊散养奶牛寄生虫感染率高，混合感染普遍，应加强寄生虫防治。     

某集约化养猪场寄生虫检查

某集约化养猪场寄生虫检查朱卫萍，蒋荣彪，咸桂芳（东莞市食品进出口公司大岭山猪场５１１７７４）集约化养猪场流水式的生产，栏舍、设备长期使用，易于感染各种寄生虫。尤其是体外寄生虫的感染率较高。近来发现种猪有不同程度的皮肤病，敌对各猪群进行一次体内外寄生虫...     

寄生虫小G蛋白研究进展

寄生虫小G蛋白(small G-proteins或small GTPases)是一类结合和水解GTP的蛋白。作为细胞信号传递的重要桥梁，寄生虫小G蛋白与虫体不同调控因子和效应器分子相互作用，介导了寄生虫的营养、发育与寄生等重要生理过程。近年来，随着高通量测序技术与基因编辑技术在寄生虫研究中的大量运用，寄生虫小G蛋白种类及其功能也在被不断更新。研究表明，寄生虫小G蛋白家族不仅参与虫体的生长和发育，而且在寄生虫与宿主互作过程中扮演着至关重要的角色。目前有关寄生虫小G蛋白的研究缺乏系统、全面的归纳、分析和总结，本文在介绍小G蛋白家族的基础上，综述近年来寄生虫小G蛋白的研究现状和进展，并提出小G蛋白可以作为一种新型抗寄生虫药物靶点候选，为寄生虫病防控药物研究提供信息参考。     

铜仁市碧江区羊肠道寄生虫感染情况调查与分析

为评估碧江区羊肠道寄生虫感染情况，于2022年从碧江区部分乡(镇)羊场采集新鲜羊粪276份，采用饱和盐水漂浮法、水洗沉淀法、卢戈氏碘液法检测粪便样品中寄生虫阳性率。结果发现，共225份样品中检测出寄生虫虫卵或卵囊，检出率为81.52%;共检测到8种寄生虫，包括球虫、隐孢子虫、阿米巴原虫、圆线虫、细颈线虫、羊口线虫、鞭虫和莫尼茨绦虫，检出率分别为40.2%、19.2%、3.26%、67.8%、1.81%、2.54%、2.17%和5.80%。散养户来源样品寄生虫感染种类复杂，感染情况严重；不同发育阶段羊群感染寄生虫种类和感染率存在差异，其中羔羊感染原虫类肠道寄生虫较严重，需要引起养殖场(户)重视。     

辽宁省散养鸡寄生虫流行区系调查与综合防治

随机抽检辽宁省不同地区散养鸡300只，采用全身性寄生虫学检查法，发现辽宁省散养鸡体内外寄生虫19种，分别隶属于7纲12科13属，确定辽宁省散养鸡寄生虫优势虫种为四角赖利绦虫、鸡蛔虫、异刺线虫、鸡羽虱、柔嫩艾美耳球虫、毒害艾美耳球虫及小沟锐形线虫。     

辽宁阜新地区绵羊体内外寄生虫种类的调查

为查清危害本地区绵羊寄生虫的种类和主要虫种，因地制宜地制定防治办法，笔者历时几年时间，采用不同调查方法，对当地绵羊和无角美利妈羊寄生虫进行调查，结果表明，当地绵羊体内外寄生虫共有12种；美利奴羊寄生虫共有23种，本地区主要危害虫种是胃肠道线虫，尤以捻转血矛线虫为主。     

猪体表寄生虫介绍与防治

由于不同地区气候和饲养系统的差异，猪体表寄生虫给养猪生产带来的影响也大大不同。由疥螨引起的疥螨病是发病最多的体表寄生虫病。其他体表寄生虫包括毛囊虫，壁虱，扁虱和一些寄生真菌类。体表寄生虫病可引起摩擦、     

羊高发高害寄生虫病综合防制配套技术

一、前言羊整个生命中不断受到各种寄生虫的侵袭，井造成了多种寄生虫混合感染，随自然区地理环境和气候差异，各地有其不同的优势虫种，也由于牧地污染状况、饲养管理水平、卫生条件、防制工作等原因，造成寄生虫病的流行程度的差别，表现在感染状况，季节动态，流行范围等不同。通过家畜寄生虫调查结果表明，羊常发、多发、危害严重的寄生虫病不外乎肝片吸虫、双腔吸虫、裸头科绦虫、羊螨病、羊狂蝇蛆病、绦虫蚴病和消化道线虫等。然而上述几种寄生虫常可集于羊一身感染，危害程度是显而易见的，但这种复杂感染现象增加了防治工作的难度，…     

虫克星驱除绵羊体内外寄生虫试验

试验在寄生虫危害严重的三群羊中进行，并挑选出１５只羊作为不同剂量的试验组。经试验确认虫克星为一种广谱抗寄生虫药物，能驱除绵羊体内外多种寄生虫，且０．３ｍｇ／ｋｇ体重剂量是目前有效的驱虫剂量。     

Heartworm in dogs in Canada in 1984

In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal.

Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection.

     

Heartworm in dogs in Canada in 1983

In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario.

Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously.

     

Heartworm in dogs in Canada in 1991

In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium.     

Heartworm in dogs in Canada in 1985

In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%).

Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada.

     

Heartworm in dogs in Canada in 1988

In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%).     

Heartworm in dogs in Canada in 1989

In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated.

Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively.

     

Heartworm in dogs in Canada in 1987

In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%).     

Heartworm in dogs in Canada in 1986

In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%).

Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada.