农业农村部兽医局权威解读:吉林野猪检出非洲猪瘟病毒不影响生猪产品调出

正据农业农村部畜牧兽医局权威解读:吉林省近日在白山市林区山里的一头死亡野猪体内检出并经中国动物卫生与流行病学中心确诊为非洲猪瘟核酸阳性,但是本地周边家猪经排查和检测都没问题。截至目前,吉林只有一起家猪非洲猪瘟疫情未解除封锁,按照29号33号明电要求,吉林生猪产品可以跨省外调!疫情发生后,农业农村部、林草局立即派出督导组     

湖北省神农架林区野猪非洲猪瘟疫情的紧急流行病学调查

2020年3月3日,湖北省神农架林区报告发生野猪非洲猪瘟疫情。为了解疫情发生和发展经过,查明发生原因,评估野猪和家猪的污染情况和扩散范围,提出防控措施建议,采用紧急流行病学调查和实验室检测相结合的方式,对该起疫情进行了现场调查。调查发现,本次疫情由污染的生猪产品引起,最早可能发生在2019年秋冬季。根据调查结果,建议进一步加大野猪和家猪排查监测力度,推进林区生猪养殖环节严防死守,严管严控生猪运输、屠宰、销售环节,做好文明旅游、餐厨剩余物无害化处理等的宣传教育,推动全社会共同参与科学防控非洲猪瘟。     

辽宁省营口市再次排查出生猪非洲猪瘟疫情

正农业农村部新闻办公室10月8日发布,辽宁省营口市大石桥市、老边区再次排查出生猪非洲猪瘟疫情。 10月7日19时,农业农村部接到中国动物疫病预防控制中心报告,经中国动物卫生与流行病学中心(国家外来动物疫病研究中心)检测,辽宁省营口市排查送检样品,检出非洲猪瘟病毒,确诊为生猪非洲猪瘟疫情。涉及大石桥市高坎镇革家村、旗口镇宿东村、王围村、新兴村和老边区路南镇新立村、边城镇北于杨村,养殖户共存栏生猪3 358头,发病334头,死亡93头。     

广东省广州市黄埔区排查出非洲猪瘟疫情

正农业农村部新闻办公室12月22日发布,广东省广州市黄埔区排查出非洲猪瘟疫情。12月22日20时,农业农村部接到中国动物疫病预防控制中心报告,经广东省动物疫病预防控制中心确诊,广东省广州市黄埔区一养殖场排查出非洲猪瘟疫情。截至目前,该养殖场存栏生猪6027头、发病30头、死亡9头。     

山林地区野猪对饲养生猪的疫病风险分析及防控措施

山林地区是野猪繁衍生活的场所,野猪数量多,流动性大,是传播猪瘟、非洲猪瘟等疫病的潜在危险。文章分析了山林地区野猪对饲养生猪的疫病传播风险,提出加强防控措施,以提高养猪场(户)的疫病防范意识,保障生猪养殖健康发展。     

疫情

波兰发现第2例家猪和第13例野猪感染非洲猪瘟病例 国际畜牧网8月19日消息：波兰兽医总局发布公告称，经实验室验证，确定8月8日发现的家猪尸体和8月11日发现的野猪尸体感染非洲猪瘟。发现地点均位于波德拉谢省距白俄罗斯边境不远处。这是第2例家猪和第13例野猪感染非洲猪瘟病例。     

贵州省龙里县发生非洲猪瘟疫情

农业农村部新闻办公室12月16日发布,四川省绵阳市盐亭县和黑龙江省鸡西市鸡冠区发生非洲猪瘟疫情。12月16日14时,农业农村部接到中国动物疫病预防控制中心报告,经中国动物卫生与流行病学中心(国家外来动物疫病研究中心)确诊,四川省绵阳市盐亭县一养殖户排查出非洲猪瘟疫情,黑龙江省鸡西市鸡冠区一养殖户发生非洲猪瘟疫情。截至目前,盐亭县养殖户存栏生猪210头,发病35头,死亡26头;鸡冠区养殖户存栏生猪84头,发病24头,死亡24头。     

怀化市一起非洲猪瘟的确诊与监测分析

2018年11月18日,湖南省鹤城区在进行排查时发现黄金坳镇某养殖户有生猪出现不明原因死亡,结合临床和实验室检测结果,确诊该病例为非洲猪瘟(ASF)疫情。溯源调查和监测结果显示,疫情传入的来源可能途径为泔水饲喂生猪,病毒来源可能为输入性猪肉产品。怀化市动物疫病预防控制中心通过开展流行病学调查和监测,防止了ASFV的传播和扩散风险。     

临夏县一起疑似非洲猪瘟疫情的现场诊断

2019年2月2日,临夏县某散养户发生不明原因生猪死亡。兽医人员第一时间赶赴现场开展调查诊断工作,通过流行病学、临床症状、病理变化等方面判断,初步排除感染非洲猪瘟可能性。省动物疫病预防控制中心检测结果也支持了上述结论。此次疑似疫情的调查处置对未来非洲猪瘟排查工作具有一定参考价值。     

新疆外地输入猪肉水饺的非洲猪瘟病毒检测

为进一步加强非洲猪瘟防控工作,新疆开展了非洲猪瘟专项监测排查,2018年12月5日,在公路检查站拦截的A厂5个批次速冻水饺样品中,首次检出非洲猪瘟病毒核酸。为防止携带非洲猪瘟病毒的猪肉产品引发疫情,针对公路检查站、冷库及超市的猪肉馅水饺进行排查,随后又在B厂4个批次水饺中检出非洲猪瘟病毒核酸。这是新疆首次连续集中在外地输入的猪肉馅水饺中发现非洲猪瘟病毒,说明非洲猪瘟病毒已形成了一定污染面。因此,要加强产地检疫和屠宰场的实验室检测,继续加大跨省入疆猪肉及其产品的检查和查处力度,严格控制疫区生猪及猪肉产品调入新疆。     

A serological survey of selected pathogens in wild boar in Slovenia

Serum samples collected from 178 shot wild boars (Sus scrofa) were tested for the presence of antibodies against classical swine fever virus, Aujeszky's disease virus (ADV), porcine reproductive and respiratory syndrome virus, porcine respiratory coronavirus (PRCV), transmissible gastroenteritis virus, swine influenza virus, porcine parvovirus (PPV), swine vesicular disease virus, Actinobacillus pleuropneumoniae (APP), Mycoplasma hyopneumoniae, Salmonella spp., Brucella spp. and Haemophilus parasuis (HPS) throughout Slovenia during the hunting season 2003/2004. The number of samples corresponds to 3% of the total hunting bag. By enzyme-linked immunosorbent assay (ELISA) antibodies against ADV were detected in 55 sera (31%), against PRCV in five sera (3%), PPV in 87 sera (49%), APP in 93 sera (52%), M. hyopneumoniae in 38 sera (21%), Salmonella spp. in 85 sera (47%) and HPS in 33 sera (18%).     

Oral immunization against classical swine fever (CSF) in the Federal State of Brandenburg from 1995 to 1997

The first findings of classical swine fever in wild boar occurred in the rural district Ostprignitz-Ruppin of Brandenburg in March 1995. Up to this time the area was considered to be free of swine fever in domestic and wild boars. The swine fever cases were marked particularly by the occurence of dead games and clinically decreased individuals as well as by the involvement of young wild boars. (< 10 kg carcass weight). In Brandenburg, the eradication programme of classical swine fever was based on oral immunization with an attenuated type C vaccine (so called Dessauer wild boar lure) carried out within the frame of a field trial since 1995. The success of oral immunization was examined by the development of swine fever positive-findings within the swine fever endangered district and by the seroconversion in the entire vaccination area. Due to the oral immunization the classical swine fever prevalence decreased from 4.65% in March 1995 to 0.58% in December 1997. After the third immunization the seroconversion reached on average rates between 30% and 35%. The seroconversion increased with carcass weight and with number of subsequent immunization. During the investigation period the rate of seroconversion in wild boars up to 17 kg carcass weight was 13.2%, in wild boars from 18 to 28 kg carcass weight 23.1%, sub-adult wild boars from 29 to 56 kg carcass weight 33.2%, and the adult wild boars above 57 kg carcass weight 41.5%.     

Identification of African swine fever virus genomic DNAs in wild boar habitats within outbreak regions in South Korea

An African swine fever (ASF) outbreak in wild boars was first reported on October 2, 2019, in South Korea. Since then, additional cases were reported in South Korea''s border areas. We here report the identification of ASF virus (ASFV) DNAs from two out of eight environmental abiotic matter samples collected from areas where ASF-positive wild boar carcasses were found. Comparative genomic investigations suggested that the contaminating ASFV DNAs originated from the wild boar whose carcass had been found near the positive sample sites. This is the first report on the identification of ASF viral material in wild boar habitats.     

规模化猪场猪圆环病毒2型感染的实验室诊断

为了确诊贵州省某规模化猪场保育仔猪异常死亡原因,从怀孕母猪、产房母猪、后备母猪、种公猪、哺乳仔猪、保育仔猪6个猪群采集90份血清样本采用ELISA方法分别进行血清抗体检测,并对采集的90份血清样本和1份病死猪淋巴结组织采用荧光PCR方法进行病原学检测。结果:6个猪群综合的猪瘟病毒、猪蓝耳病病毒、伪狂犬病病毒g B蛋白、伪狂犬病病毒g E蛋白血清抗体阳性率分别为87.78%、70.00%、88.89%、4.44%;猪瘟病毒、猪蓝耳病病毒、伪狂犬病病毒病原核酸检测显示阴性,猪圆环病毒2型病原核酸检测淋巴结组织样本显示阳性。试验结果表明,引起该猪场保育仔猪死亡的原因为猪圆环病毒2型感染。同时,怀孕母猪群出现了伪狂犬病病毒g E蛋白抗体阳性,提示怀孕母猪群可能存在猪伪狂犬病野毒感染。     

A review of viral diseases of the European wild boar: effects of population dynamics and reservoir rôle

There has been a worldwide increase in the number and geographical spread of wild boar populations in recent decades leading to an increase in both the circulation of disease agents and greater contact with domestic animals and humans. Diseases affect the population dynamics of wildlife but the effects of most viral diseases on the European wild boar are largely unknown. Many viral diseases present in domestic pig populations are also present in wild boars where they can provide a disease reservoir, as is clearly the case with classical swine fever, but little is known about other viral diseases such as porcine circovirus diseases or hepatitis E. This review considers the current scientific knowledge of the effects of viral diseases on wild boar populations and their r?le as potential disease reservoirs. The focus is on those viral diseases of domestic swine and wild boars that are included as notifiable by the Office International des Epizooties (OIE).     

A serological survey on classical swine fever (CSF), Aujeszky's disease (AD) and porcine reproductive and respiratory syndrome (PRRS) virus infections in French wild boars from 1991 to 1998

In early 1992, a CSF epizootic was clinically recognised in a wild boar population of approximately 1300 animals within an area of 250km(2) located in the east of France. In order to check the CSF situation in wild boars outside this area, a serological survey was carried out in the rest of France, for 8 consecutive years (1991-1998). This paper reports on the results obtained during this survey which included wild boars shot during the hunting period but also boars reared within fences. Around 1000-2700 sera a year were tested for the presence of antibodies to classical swine fever virus (CSFV) and also to Aujeszky's disease virus (ADV). Out of 12025 sera tested over the whole period, 80 wild boars were found positive for CSF antibodies. Sixty of them were collected on wild boars shot during the years 1992-1994 in the epizootic area located in east of France and 10 were collected in Corsica during the years 1994-1996. The last four positive samples were single reactors coming from areas or farms, which were thereafter confirmed to be serologically negative. These results together with the fact that no disease has been reported so far illustrate that the French wild boar population is probably not concerned by CSF infection (excepted in the east of France where the disease has now become enzootic). Two hundred and forty nine sera were initially detected as CSF positive but confirmed secondarily as positive for border disease (BD) antibodies. This finding shows that wild boars are also susceptible to infection by ruminant pestiviruses. Four hundred and twenty three wild boars have been found positive for ADV antibodies. In addition, from 1993 to 1995, 909 samples were tested for the presence of antibodies to porcine reproductive and respiratory syndrome virus (PRRSV). Thirty three of them were positive. The results on AD and PRRS antibody detection show that wild boars may constitute a reservoir for various infectious diseases of pigs.     

Prevalence of antibodies to classical swine fever,Aujeszky's disease,porcine reproductive and respiratory syndrome,and bovine viral diarrhoea viruses in wild boars in Croatia

During the hunting season in February 1999, a total of 44 blood samples were collected from wild boars shot in the area of Moslavacka gora. These blood samples were examined by enzyme immunoassay for the presence of antibodies to classical swine fever (CSFV), Aujeszky's disease (ADV), bovine viral diarrhoea (BVDV), and porcine reproductive and respiratory syndrome (PRRSV) viruses. Out of 44 serum samples examined, 17 (38.63%) were positive for CSFV, 24 (54.54%) were positive for ADV and two (4.54%) were positive for BVDV. All sera were negative for PRRSV. The results, recorded for the first time in Croatia, supported the hypothesis that wild boar act as a potential reservoir of CSFV, ADV and BVDV, and thus have a role in the epidemiology of these diseases.     

Prevalence of Antibodies to Classical Swine Fever,Aujeszky's Disease,Porcine Reproductive and Respiratory Syndrome,and Bovine Viral Diarrhoea Viruses in Wild Boars in Croatia

During the hunting season in February 1999, a total of 44 blood samples were collected from wild boars shot in the area of MoslavaC?ka gora. These blood samples were examined by enzyme immunoassay for the presence of antibodies to classical swine fever (CSFV), Aujeszky's disease (ADV), bovine viral diarrhoea (BVDV), and porcine reproductive and respiratory syndrome (PRRSV) viruses. Out of 44 serum samples examined, 17 (38.63%) were positive for CSFV, 24 (54.54%) were positive for ADV and two (4.54%) were positive for BVDV. All sera were negative for PRRSV. The results, recorded for the first time in Croatia, supported the hypothesis that wild boar act as a potential reservoir of CSFV, ADV and BVDV, and thus have a role in the epidemiology of these diseases.     

非洲猪瘟研究进展及防控措施

非洲猪瘟(African swine fever,ASF)是由非洲猪瘟病毒科、非洲猪瘟病毒属的唯一成员非洲猪瘟病毒(African swine fever virus,ASFV)引起的一种高致死率、高抵抗力、严格接触性的病毒性疾病,对所有年龄段的家猪和野猪均具有感染性。我国非洲猪瘟传入疫情的出现,对养猪生产构成严重威胁,必将冲击生猪产业的健康稳定发展。本文介绍ASF的病原、流行病学特点,并总结防控措施,以期为ASF的进一步防控提供参考。     

一例猪圆环病毒2型和大肠杆菌、溶血葡萄球菌混合感染的诊断

山东德州某猪场发生猪高热、呼吸系统疾病甚至死亡的疫情。采集病料提取病变组织总DNA或RNA进行猪繁殖与呼吸综合征病毒、猪圆环病毒2型、猪细小病毒、猪伪狂犬病病毒、猪瘟病毒的PCR或RT-PCR检测。PCR扩增出353 bp的猪圆环病毒2型特异性条带。同时进行细菌分离培养、生化鉴定等试验,诊断为猪圆环病毒2型和大肠杆菌、溶血葡萄球菌混合感染。