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1.
猪繁殖与呼吸道综合征（ＰＲＲＳ）是一种新发现的猪病毒性疾病。各种年龄猪均可感染发病，主要临床症状为厌食、嗜睡、体温升高；繁殖母猪受胎率低下，妊娠母猪发生早产、流产、死胎、弱胎及木乃伊胎现象；哺乳母猪泌乳不足，使新生仔猪生长发育受阻甚至死亡；仔猪和育肥... 相似文献
2.
猪繁殖与呼吸障碍综合征是一种以妊娠母猪流产,死胎,弱胎及仔猪育肥猪呈现呼吸道症状为主要特征的猪病,妊娠母猪发病后,产仔数下降,流产,死胎,弱胎,其弱胎率可达30％～100％。育肥猪发病后,表现为生产缓慢,饲料报酬率低,多继发感染。该病只能使猪患病,猪是惟一的易感动物,任何年龄、性别、品种和用途的猪均可感染发病,其中尤以怀孕母猪和1月龄以内的仔猪最易感染。该病的病毒可通过多种途径传播。 相似文献
3.
猪伪狂犬病（Pseudorabies，PIK）是由猪疱疹病毒Ⅰ型引起的一种高度传染性、致死性传染病。猪是该病最主要的贮存宿主和传染源，健康猪与病猪、带毒猪直接接触可感染本病。成年猪常为隐性感染；怀孕母猪发生流产、死胎、弱胎、木乃伊胎；新生仔猪出现发热及神经症状，甚至衰竭死亡，死亡率可达100％。 相似文献
4.
猪细小病毒病又称繁殖障碍病,该病的特点主要是受感染的母猪,特别是初产母猪产出死胎、畸形胎、木乃伊胎及弱仔猪,母猪无明显的其他症状。该病在我国较多的养猪场发生,造成相当大的危害,应充分重视该病的防治。1流行特点种猪、仔猪均可感染发病,但以初产母猪较为常见。一般呈地方流行性或散发,无明显的季节性,母猪交配后的一段时 相似文献
5.
猪繁殖与呼吸障碍综合征是一种以妊娠母猪流产,死胎,弱胎及仔猪育肥猪呈现呼吸道症状为主要特征的猪病,妊娠母猪发病后,产仔数下降,流产,死胎,弱胎,其弱胎率可达30％～100％.育肥猪发病后,表现为生产缓慢,饲料报酬率低,多继发感染.该病只能使猪患病,猪是惟一的易感动物,任何年龄、性别、品种和用途的猪均可感染发病,其中尤以怀孕母猪和1月龄以内的仔猪最易感染.该病的病毒可通过多种途径传播. 相似文献
6.
猪细小病毒病是由细小病毒科的猪细小病毒引起猪的繁殖障碍病之一,该病的特点主要是受感染的母猪,特别初产母猪产出死胎、畸形胎、木乃伊胎、弱仔猪及健康仔猪,母猪无明显的其它症状.该病在我国较多的猪场发生,特别是集约化猪场造成相当大的危害,应该引起足够的重视. 相似文献
7.
猪细小病毒病又称繁殖障碍病，该病的特点主要是受感染的母猪，特别是初产母猪产出死胎、畸形胎、木乃伊胎及弱仔猪，母猪无明显的其它症状。该病在我国较多的猪场发生，特别是集约化猪场造成相当大的危害，我地近期时有发生，有流行的趋向，应充分重视该病的防治。 相似文献
8.
1概述
猪细小病毒病是由细小病毒科的猪细小病毒引起猪的繁殖障碍病之一,该病的特点主要是受感染的母猪、特别是初产母猪,产出死胎、畸形胎、木乃伊胎及弱仔猪,母猪无明显的其它症状。该病在我国较多的猪场发生,特别是在集约化猪场造成相当大的危害,应充分重视该病的防治。 相似文献
9.
猪繁殖与呼吸综合征是由猪繁殖与呼吸综合征病毒引起的一种猪的高度接触性传染病，不同年龄、品种和性别的猪均能感染，但以妊娠母猪和1月龄以内的仔猪更易感染；该病以母猪流产、死胎、弱胎、木乃伊胎以及仔猪呼吸困难、败血征、高死亡率为主要特征。该病1987年在美国的北卡罗来纳州首先发现，然后向世界各地迅速蔓延，到目前为止，世界上仅有少数几个国家没有该病的发生与流行，如瑞士、新西兰、澳大利亚等。 相似文献
10.
猪蓝耳病又名猪繁殖与呼吸综合征，该病是1987年新发现的一种接触性传染病。主要特征是母猪呈现发热、流产、木乃伊胎、死产、弱仔等症状，仔猪表现为异常呼吸症状和高死亡率。因发病猪一般表现出耳朵发蓝，故简称蓝耳病。受感染的种猪场的母猪流产、早产、死胎率可达20％～30％，新生仔猪的死亡率可高达80％以上，在流行过程中存活的仔猪常常发育不良，且容易继发感染其他疾病。猪只一旦感染了本病， 相似文献
11.
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. 相似文献
12.
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%). 相似文献
13.
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. 相似文献
15.
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. 相似文献
16.
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%). 相似文献
17.
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. 相似文献
19.
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. 相似文献
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