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1.
１９９７年４～８月某集约化猪场发生以母猪产死胎多、弱仔多、断奶后发情期延长，新生仔猪体温升高、口吐白沫、拉黄色稀粪和神经症状，有的皮肤苍白、昏睡，致死率高的疾病，造成较大的经济损失。经采集病料送湖南农业大学动物科技学院实验室检验，确诊为猪伪狂犬病并缺硒。采取综合防治措施，疫情得到有效控制。现将情况报告如下。１ 发病情况该场是出栏８０００头商品猪的集约化猪场。１９９７年４月中旬开始，母猪出现流产、早产、产死胎（木乃伊）、弱仔数量增多，部分母猪断奶后发情延长，复配增加。部分仔猪产后３～７天（有的１～… 相似文献
2.
１ 发病经过 １９９７年１０月份至１９９８年３月份，豫北地区多个工厂化猪场发生伪狂大病流行，现将流行情况和诊断经过报告如下： １９９７年１０月在一个五千头规模猪场首次暴发，１２月份以后相继波及其他几个猪场。首先表现出临床症状的是种猪，继之哺乳仔猪开始发病，仔猪死亡率为９０％～１００％，日龄超过一个月的仔猪，死亡率也达５０％。流行期间用药无效，流产母猪达５％～８％，死胎、木乃伊胎增多。采取疫苗注射和严格的消毒隔离等生物安全措施后，３０ｄ内疫情得到有效控制，死亡率大幅度下降，流产及死胎的母猪减少，生产… 相似文献
3.
１发病情况寿光市城关镇某村办养猪场，自１９９４年秋建场以来，基本依靠自繁自养方式，发展到现在，已有种猪５０１头，其中母猪４９０头，年出栏近 ５ ０００头。 １９９８年秋后，少数母猪产仔后，不明原因地整窝仔猪全部死亡，有的全部产下死胎，有的产下２ｄ后断断续续死亡。１９９９年秋后至２０００年２月，母猪产仔２０６窝，发病１３３窝。特别是１９９９年１２月至２０００年２月，母猪所产仔几乎全部发病。２症状母猪怀孕期间食欲下降，精神沉郁，有的早产。仔猪出生后２ ｄ开始发病， １０ ｄ内死亡率几乎１００％，个别窝仅剩… 相似文献
4.
我市某万头商品猪场用毒饵灭鼠后，残留毒饵混入饲料、使该场一幢存栏９０ｋｇ待售肥猪发生中毒，发病４２０头，死亡５１头，中毒致死率１２．１％。１发病症状和经过该场第６幢猪舍１９９７年１２月９日晚喂料后发现２头猪食后即卧地不起，乃用抗生素进行治疗。１０日早... 相似文献
5.
猪传染性胃肠炎是由猪传染性胃肠炎病毒引起的一种急性高度接触性肠道传染病，以呕吐、严重腹泻、脱水以及１０日龄内的仔猪高度死亡为主要特征。每年冬末春初，许多地方都大面积的发生与流行，各种年龄的猪都可感染，但断奶仔猪、育肥猪和母猪一般在发病后一周左右能自愈，很少死亡，而２周龄以内的仔猪病死率极高，几乎可达１００％。１９９７年１１月，我县某猪场发生了本病的暴发性流行，现将诊断及防制结果报告如下：一、发病情况及临床症状该场平时各种消毒、防疫制度较严格。但由于１９９７年１０月份猪舍翻修施工，人员出入较频繁，… 相似文献
6.
１９９８年３～１１月我市某集约化养猪场，由于猪瘟疫苗免疫密度降低或因疫苗质量差，导致猪瘟流行。现将诊断与防治报告如下。１发病情况该场饲养长×大母猪，与杜洛克公猪杂交，生产出的后代育肥作出口猪销售，常年存栏牲猪３５００头左右。１９９８年３月，由于管理机制原因，对猪瘟防疫放松，新生仔猪猪瘟免疫密度降为２０％～３０％，１９９８年６月，该场共４栋断奶仔猪舍和架子猪舍（每舍饲喂４００头左右)发生疫情每天有１１～３２头左右猪发病死亡，到１９９８年１１月共计死亡牲猪１１００余头。２临床症状检查患猪：体温４０．… 相似文献
7.
１９９６年９月,我省某地养猪场经产母猪发生死胎、木乃伊、黑胎现象,怀疑为猪细小病毒、乙型脑炎,并加强了对上述疾病的防疫工作。１９９７年１０月该猪场７～１５日龄新生仔猪,几乎整窝发病、整窝死亡,发病率和死亡率均很高,在短短１个月内死亡仔猪达１７６头,断... 相似文献
8.
湖南双峰县某猪场在１９９７年２月，对其中一栋母猪舍进行了１次猪瘟兔化弱毒疫苗３头份注射，其中有１０头为怀孕母猪。这１０头母猪，先后产下仔猪１１２头，其中死胎２２头，死胎率为１７８６％，明显高于其他母猪的死胎率（２％左右）。此猪场的仔猪出生后均在吃初乳前进行１头份超前猪瘟疫苗注射，然后在６０ｄ左右进行第２次２头份注射。这１０头母猪产下的９０头活仔猪，有６７头在产后２５～３５ｄ先后发病，发病率为７４４４％，死亡５１头，而其它母猪所产仔猪及其它猪在此期间均未见发病。对发病猪用多种抗生素和其它药物进… 相似文献
9.
2002年4月初,我市某养猪场的母猪经常发生无征兆性流产,最后经实验室检查诊断为母猪流产型衣原体病,现将诊治情况报道如下。1发病情况某瘦肉型养猪场在2002年4月份开始经常有个别怀孕母猪发生无征兆性流产,发情母猪也多次配种不孕,持续2个多月,后来越来越多怀孕母猪(包括重胎)出现无征兆性流产,小猪、肥育猪没有出现明显临床症状,造成畜主和驻场兽医误认为是乙型脑炎、慢性猪瘟、伪狂犬病等病毒性疾病。母猪发病率达30%～40%,其中怀孕30～80天流产的母猪占多数,怀孕重胎的较少,空怀母猪发情后阴户流清水样粘液时间延长,屡配不孕。据查该场已… 相似文献
10.
２００１年１０月１４日，梅州市某县一私营种猪场暴发猪伪狂犬病并造成了重大经济损失。经采取综合防治措施，病情得到了控制，现报告如下。１ 发病情况该场为１９９７年办场，共饲养长白、大白、杜洛克、纯外二元杂交母猪４１２头（其中成年母猪３６３头），成年公猪１１头。从１０月１４日最早出现的４头母猪（怀孕６０～８０天的初配母猪）发病开始至完全控制本病的３０天时间内，成年母猪发病率为６０％，怀孕母猪流产率１００％（其中４６头怀孕母猪因死胎难产感染死亡），初产１周内的仔猪发病率１００％，死亡率１００％，７～２８… 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 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. 相似文献
16.
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
17.
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
18.
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
20.
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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