禽沙门氏菌病的诊断要点及防控措施

禽沙门氏菌病是由沙门氏菌属中的一种或多种沙门氏菌引起的禽类急性或慢性传染病。在临床上将鸡白痢沙门氏菌引起的沙门氏菌病称为鸡白痢,鸡沙门氏菌引起的称禽伤寒,而由某些有鞭毛,能运动的沙门氏菌引起的称为禽副伤寒。1鸡白痢鸡白痢是由鸡白痢沙门氏菌引起的,在各种年龄鸡均可发生的传染病,有的呈急性败血性经过,有的则以慢性或隐性感染为主。病鸡和带菌鸡是本病的传染源,可通过消化道水平感染,     

兰州地区鸡沙门氏菌病病原分离与鉴定

鸡沙门氏菌病包括鸡白痢、鸡伤寒和鸡副伤寒3个疫病,鸡白痢是由鸡白痢沙门氏菌所引起;鸡伤寒是由鸡伤寒沙门氏菌所引起;鸡副伤寒是由多种沙门氏菌所引起。目前已知的沙门氏菌有1700多种,也有报告约2000个血清型,其中能引起鸡副伤寒者主要有10     

鸡白痢沙门氏菌的净化效果监测

正沙门氏菌病是一种多种动物共患的传染病,其病原是沙门氏杆菌。根据病原特点,它可以分为三种不同的疾病,即禽伤寒、地方流行性禽副伤寒和鸡白痢。近年来,鸡白痢沙门氏菌流行广泛,给养禽业造成了严重的影响和较大的经济损失。为了解新疆维吾尔自治区规模化肉种鸡场鸡白痢沙门氏菌的感染情况,分6批从4栋鸡舍采集血清2400份,进行鸡白痢沙门氏菌抗体检测,并对鸡场采取了净化措施。     

禽沙门氏杆菌病的防治

禽沙门氏杆菌病是由沙门氏菌属中一种或几种沙门氏菌引起的禽类一种急性或慢性疾病。鸡沙门氏菌病包括鸡白痢、禽伤寒和禽副伤寒。其中前两者是由单一沙门氏菌引起的,如鸡白痢为鸡白痢沙门氏菌引起,禽伤寒为禽伤寒沙门氏菌引起。而禽副伤寒则由多种沙门氏菌引起,凡不属于前两种沙门氏菌引起的禽沙门氏菌病统称为禽副伤寒病。本病遍市于世界各地,不仅严重危害养禽业的发展,而且还威胁到人类的健康,是一种人畜共患的传染病。     

新疆地区鸡伤寒白痢沙门氏菌病的调查

对新疆地区鸡沙门氏菌病进行了病原学、血清学和流行病学调查，结果表明分离的246株细菌与鸡白痢鸡伤少门氏菌诊断血清呈阳性反应；对15株鸡沙门氏菌进行抗原结构分析，表明8株为标准型鸡白痢伤寒沙门氏菌，7株为中间型鸡沙门氏菌，对其中86株菌的生化鉴定表明符合鸡白痢鸡伤寒沙门氏菌的生化特性。该病在我区的发病死亡率为1％－25％，发病严重的鸡场为50％－75％。该病除了单一感染外，还与鸡大肠杆菌、葡萄球菌、鸡球虫病混合感染。     

欧洲家禽沙门氏菌病的流行现状及其控制

1家禽沙门氏菌病及其分类家禽沙门氏菌病是指由沙门氏菌属细菌感染家禽引起的急性或慢性疾病。可分为两大类:一类为不运动的沙门氏菌——鸡白痢和鸡伤寒沙门氏菌感染,分别被称为鸡白痢和禽伤寒。鸡白痢沙门氏菌感染主要引起雏鸡和雏火鸡的急性、全身性疾     

鸡沙门氏菌病综合诊疗

鸡沙门氏菌病是由沙门氏杆菌引起的一种常见多发病,包括鸡白痢杆菌病、鸡副伤寒、鸡伤寒病。(一)流行特点1.鸡白痢。各品种、各年龄的鸡均可感染,3周龄以内的雏鸡     

鸡伤寒病的综合防治

正鸡伤寒是由鸡伤寒沙门氏菌引起的一种败血性传染病,病菌与白痢病的白痢沙门菌很相似,这两种病常交叉发生,但白痢主要感染雏鸡,而伤寒则既感染雏鸡又感染成年鸡。鸡伤寒呈世界性分布,由该病造成的损失很严重,死亡率可达10%-50%或更高。鸡沙门氏菌可感染任何日龄的鸡,种鸡感染后所产的蛋带有鸡沙门氏菌,因此可垂直传播。1流行病学鸡伤寒以肝、脾等实质器官的病变和下痢为特征,发生于3周龄以上的青年鸡及成年鸡,鸡     

鸡沙门氏菌病的传播途径与防控

沙氏门菌病是一种人畜共患传染病,不仅影响养鸡业健康发展,而且还是重要的食源性疾病,使得食品安全事件频发。沙门氏菌分布广,尤其家禽类产品,很容易被沙门氏菌污染,引起此病的大范围流行。鸡沙门氏菌主要包括鸡白痢、鸡伤寒和鸡副伤寒,本文根据当地的发生情况,详细的阐述了引起鸡沙门氏菌的传播途径、临床表现以及防控措施,为科学防控鸡沙门氏菌病提供参考。     

雏鸡沙门氏菌的分离与鉴定

鸡的沙门氏菌病 ( Salmonellosis avian)是由某些特定血清型的沙门氏菌 ( Salmonella)所引起的一类传染病的总称 ,对养鸡生产及食品卫生具有较大危害。鸡的沙门氏菌感染多以单血清型为主。鸡伤寒沙门氏菌 ( S.gallinarum)通常引起成年鸡发生急性或慢性败血病 ,但以雏鸡死亡率为高 [1,2 ] 。鸡白痢沙门氏菌 ( S.pullorum)主要引起雏鸡、雏火鸡的白痢 [3 ] 。近年来河北卢龙、昌黎等地大面积暴发雏鸡沙门氏菌病 ,引起大批雏鸡死亡。经鉴定为鸡伤寒和鸡白痢沙门氏菌混合感染所致。1　材料与方法1 .1　材料1 .1 .1　被检材料　 1 5只死雏鸡均…     

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.