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牛病毒性腹泻(黏膜病)是由牛病毒性腹泻病毒引起,各种年龄牛只都易感的一种传染病,重点感染幼龄牛,该病呈世界性分布,尤其是养牛业较为发达的国家和地区。该病带毒时间长,康复牛可带毒6个月,病牛和带毒牛是该病的主要传染源。牛只可通过消化道和呼吸道感染,也可通过胎盘垂直感染。该病无特效治疗方法,及时的诊断和有效的预防是控制该病的重要方法。 相似文献
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上海规模化猪场猪病毒性腹泻的流行病学调查 总被引:1,自引:0,他引:1
于2005~2009年间对上海崇明县和奉贤区的规模化猪场开展了猪病毒性腹泻的流行病学调查,经现场咨询、临床检查、患猪症状观察和病理剖检以及病原学鉴定,结果表明本病发生具有普遍性,且多发于冬春季节,哺乳仔猪受威胁最大,证实主要致病因子为猪传染性胃肠炎病毒(TGEV)、猪流行性腹泻病毒(PEDV)和猪轮状病毒(Rotavirus),其中猪传染性胃肠炎病例所占比例最高,由此提出了本病的防控措施。 相似文献
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通过对吉林省前郭县45年来人畜间布氏菌病流行规律调查,结合病原性检测,分析防制措施及效果,总结防制经验,为有效控制消灭布氏菌病、实施建立无特定疫病区提供科学依据。 相似文献
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近年来,随着养猪户规模的扩大.一些养猪户由于缺乏饲养管理技术,使得夏季猪患病增多.最为明显的就是猪的链球菌病和弓形体病,并出现了一些新的流行特点和变化.给广大养猪户造成了一定的经济损失,也为兽医技术人员对猪病的诊断、防治增加了一些困难.在预防与治疗时应加以区分。下面笔者就这二种病分别作一简述,希望能给广大养猪户带来一些启示。 相似文献
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<正>牛病毒性腹泻又称牛黏膜病,由牛病毒性腹泻病毒引起,以发热、口腔及其他消化道黏膜糜烂或溃疡、白细胞减少为特征。笔者在门诊时多次遇到牛口腔溃疡、流涎病例,采取紧急免疫接种、控制继发感染的治疗方案,收到理想效果。报告如下:1发病情况2010年11月26日,我市某牛场张某送来一病死牛,主诉:在刚修好的养牛场,原计划进行规模养殖肉牛,于本月7日从黑龙江省某一交易市场购回 相似文献
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本文概述了当前我国兽药制剂中的基本剂型.从药物制剂学角度论述了我国兽药制剂生产中存在的主要问题,并提出了发展兽药制剂生产的对策,以期提高兽药制剂技术.提高我国兽药质量。 相似文献
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Abstract Infectious salmon anaemia (ISA) virus (ISAV) has been causing disease in New Brunswick since 1996. As a control measure, all fish in an outbreak cage are killed. The objective of this study was to compare ISAV prevalence in cages experiencing an outbreak with healthy cages from the same farm, neighbouring farms and distant farms. Atlantic salmon from five different groups were tested using an RT-PCR test. Groups included moribund fish from a cage experiencing an outbreak (A), healthy fish from an outbreak cage (B), healthy fish from a negative cage from a farm experiencing an outbreak in a different cage (C), healthy fish from a negative farm near an outbreak farm (D), and healthy fish sampled at a negative farm located in an area with only negative farms (E). Apparent prevalences (standard error) for the different groups (A-E) were 0.94 (+/-0.026), 0.41 (+/-0.062), 0.29 (+/-0.040), 0.08 (+/-0.037) and 0.08 (+/-0.037), respectively. All groups were significantly different (P < 0.002) from each other except for groups B and C and groups D and E. Because the prevalence of the virus was significantly higher in the outbreak cage (B) compared with other sites, early harvest of outbreak cages will remove one source of virus. However, ISA negative cages (C) that remain on the positive farm may potentially act as a viral reservoir. 相似文献
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Ana Luísa Pinto Paula Teixeira Fernanda Castilho Maria Teresa Felício Filomena Pombal & Paul A Gibbs 《Aquaculture Research》2006,37(11):1112-1116
The prevalence and contamination levels of Listeria monocytogenes were investigated in live bivalve molluscs for human consumption, collected in various steps of the commercial and sanitary circuits in the North of Portugal. Samples of different species were collected per lot before and after depuration treatment in two depuration units and further, when placed in retail markets. Listeria monocytogenes was isolated from 4% of the samples although with very low contamination levels (less than 100 MPN g?1). None of the environmental (non‐depurated) samples were contaminated with the food‐borne pathogen. The positive samples involved depurated and commercialized samples from two lots, one in each circuit. Two serotypes (1/2a and 3b) were detected among the isolated strains. This study demonstrated the possibility of occurrence of L. monocytogenes contamination of live bivalve molluscs along the sanitary control circuit, including at the retail market level. As L. monocytogenes grows well at refrigerated temperatures and in high salt matrixes such as seafood its presence in these products should not be overlooked. 相似文献
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随着分子生物学技术的发展,人们越来越重视育种的效率,对主要组织相容性复合体研究的进一步深入,阐明了它在免疫应答、多种疾病的预防方面起到了一定的作用,主要介绍了主要组织相容性复合体的概念以及它与抗病性的关系,最后对主要组织形容性复合体的发展进行了展望。 相似文献
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在进行翘嘴红鱼白鱼苗铒料配方的筛选实验中 ,实验鱼感染了小瓜虫 ,分别采用如下方法进行治疗 :1 .5ppm的亚甲蓝浸泡 4天 ;2 .3%的食盐溶液浸泡 3min ;3 .0 5ppm的福尔马林溶液浸泡 3min。 4 .0 1ppm的硝酸亚汞溶液长期浸泡 (1星期以上)。结果为 :亚甲蓝浸泡 4天 ,患病鱼无好转 ,第 3天开始逐渐死亡 ,4天内全部死亡 ;用食盐和福尔马林溶液浸泡 3min,患病鱼即全部死亡。对用以上 3种药物处理后的鱼体进行镜检 ,发现鱼体上的小瓜虫体无明显减少。用硝酸亚汞浸泡的鱼 ,治疗期间死亡 2尾 ,镜检鱼体上无虫体。结论是 :患小瓜虫病的翘嘴红鱼白 ,不宜用亚甲蓝、食盐或福尔马林 ,采用 0 1ppm的硝酸亚汞溶液长期浸泡较为有效 相似文献