共查询到20条相似文献,搜索用时 0 毫秒
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完善的猪场生物安全体系是有效控制猪群疫病,保护猪群健康的重要途径。恢复养猪生产,需要有效的生物安全体系作保障。在非洲猪瘟环境下,如何重建生物安全体系,有效评估和实施生物安全措施,并在实施中不断完善,是猪场恢复生产所面对的重要问题。文章分析了目前生物安全体系中存在的问题,阐述了重建及实施猪场生物安全体系的方法,包括现场调查评估、体系文件的完善、设施与设备的改进、员工的培训与执行、效果评估(包含实验室评估)与体系改进等,以此重新建立并逐步完善适合本猪场的生物安全体系,为恢复生产提供坚实的基础保障。 相似文献
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中国6个地方猪种与3个外种猪氟烷基因PCR产物序列比较研究 总被引:4,自引:0,他引:4
本文应用PCR方法 ,体外扩增了中国地方猪和外种猪共 16个个体的氟烷基因 1814 9~ 1876 0位之间 6 12bp的片段 (包含完整的外显子 17和cDNAC1843 →T1843 突变位点 ) ,并进行了序列测定。结合网上下载的 5个中外猪种相同区段的序列进行了比较研究。结果表明 ,本文所测序列比网上公布的序列少 2bp ,在 1815 3,1815 4处有两胞嘧啶(C)缺失 ;皮特兰猪在cDNA的C1843 位点存在C1843 →T1843 突变 ;6 12bp的片段中共有 14个变异位点 ,皆为转换型突变 ,内含子 16中有 3个位点存在转换型杂合子 ;所有突变中 ,有 4处发生在外显子 17内 ,除香猪和皮特兰猪外均为同义突变 ;这些变异位点共形成 12种单倍型 ,其中扩增片段 5 14位 (全序列中为 186 6 2位 )的C→T突变为内江猪独有 ,构成了内江猪独特的单倍型 ,C18662 →T18662 突变具有品种特异性 相似文献
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This paper evaluates the association between herd level risk factors for introduction and transmission of Salmonella in farms with three different production systems: organic, outdoor (non-organic) and indoor finishing-pig farms, and the presence of seropositive animals in the herds. Potential risk factors for Salmonella in the three pig production systems were identified through a literature review, and management information as well as serological data were collected in 34 pig farms: 11 organic farms, 12 outdoor farms, and 11 indoor farms. There were no general differences in the proportion of Salmonella seropositive animals in the organic, outdoor, and indoor pig farms. Correspondence analysis showed that the occurrence of seropositive animals in the herds was mostly associated to the risk of introducing Salmonella in the herds by purchasing and transporting growing pigs. No associations between herd risk factors for transmission and survival of Salmonella and seropositive animals in the herds were found. 相似文献
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Athanasios Krystallis Marcia Dutra de Barcellos Jens Oliver Kügler Wim Verbeke Klaus G. Grunert 《Livestock Science》2009,126(1-3):46-56
The objective of the study is to map citizen attitudes towards pig meat production systems, and to investigate whether these attitudes associate with pork and pork product consumption. A conjoint experiment was carried out with empirical data collected from 1931 individuals in four European countries with higher-than-average per capita meat consumption (Belgium, Denmark, Poland and Germany). The experiment was based on the following pig farming characteristics: herd size, housing and floor type, efforts to reduce the impact of the production system on the environment, animal feed designed for producing pork with specific fat content, and finally the preferred quality characteristics of the pork end-product. The results of the conjoint analysis were used for a subsequent cluster analysis in order to identify European citizen clusters. Respondents' socio-demographic profile, attitudes towards issues that are expected to influence the way people evaluate pig meat production systems, and consumption frequency of various pork products are used as background information to identify segment profiles. Pork appears to play a substantial role as a part of the diet for most respondents in the four countries of this study. The results of the conjoint experiment at the sample level show that people assigned most importance to animal and environmental well-being as criteria to discriminate between “good” and “bad” pig production practices, despite the fact that their attitudes towards environmental protection, animal welfare and industrial food production were only moderately strong. Moreover, the results of the cluster analysis allowed small-sized, clear-cut clusters of citizens to appear, which pay attention to specific pig farming attributes. In conclusion, attitudes towards environment and nature, animal welfare and the need for an environment-friendly food production were indeed related to citizens' specific attitudes towards pig farming at the cluster level. However, the relationship between citizenship and consumption behaviour was found to be weak. What people think in their role as citizens related to pig production did not appear to significantly influence their pork consumption choices. 相似文献
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发展草食畜牧业是建立生态农业系统的一项重要任务,是优化畜牧产业结构、稳定增加农民收入、提高畜牧业效益的重要途径。草地是发展草食畜的战略资源,昭通市具有丰富的草地资源,具备发展草食畜牧业的多种优势;在坚持以市场为导向的前提下,提出了改良草地、退耕还草、建立高质量的人工草地、因地制宜、进行合理化布局、品种改良的种养结构调整、转变传统的饲养方式、积极开发畜产品市场、逐步完善畜牧体系、加强政府领导、加大投入、促进草食牲畜大发展等方面的对策。 相似文献
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建立人-猪囊虫、猪带绦虫替代动物模型的实验技术在解决猪囊虫病研究的材料来源、以及在寄生虫入侵、致病性、免疫机制和宿主特异性等基础理论和临床应用研究中具有重要意义。因此,本文就猪囊虫和猪带绦虫病实验动物模型,尤其对啮齿类动物模型上取得的成就,以及新的研究动态和策略进行概述。目的是提高人们对猪囊虫和猪带绦虫病实验动物模型重要性的认识,促进和加快猪囊虫病研究的步伐,早日在我国有效控制人猪囊虫病。 相似文献
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介绍陇东水产养殖场从以甲鱼为主的生产系统,向多系统复合转变的经验。通过单一与复合生产经营形式经济效益的对比分析,为广大水产养殖工作者提供一条使生产步入良性循环的路子。 相似文献
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对6个区县、12个乡镇的农民人均收入、农技推广体系构成的12项指标进行了调查,利用DPS(Data Processing System)分析软件,研究农技体系构成因素与农民人均收入的关联度大小,并结合客观实际,以期探讨现代农业技术推广体系的建设思路。 相似文献
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近几年,门源县苏吉湾村在实施生态畜牧业试点工作以后,在科学利用草地,保护草地生态环境等各方面取得了显著效益,但也存在一些问题,作者结合自己多年的工作经验,并提出了一些建议。 相似文献
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对内蒙古个典型牧业旗 《畜牧与饲料科学》2020,41(4):64-68
通过对内蒙古33个典型牧业旗(县)进行实地调研和产业发展状况分析研究,提出在坚持牧民主体地位和改革创新驱动的基础上,以草原畜牧业的肉牛、肉羊、驼、马、草五大产业为主导,引导推进牧区一、二产业融合,鼓励支持第三产业发展,构建“三保障”“五支撑”的现代畜牧业生产体系的思路,并针对性提出政策建议,以期为推进内蒙古牧区产业现代化提供参考。 相似文献
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人口增加,人民生活水平提高,人类对动物性食物的需求将持续增强。由于农业系统的结构性缺陷和监管渠道不畅,动物性食品安全形势却日益严峻。国内外食品安全的历史教训和经验表明,草畜耦合是保障动物性食品安全的系统性基础,草地农业系统则提供草畜耦合不可替代的平台,这也是农业现代化的重要标志;同时,整合管理职能,简化管理机构,建立并完善适应于草地农业系统4个生产层的管理体系,将提供食品安全的制度保障。在我国,破除“以粮为纲”保食物安全的思维定式、树立建设草地农业系统的决心是保障食品安全的思想基础。 相似文献
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草地畜牧业是合作市的主导产业,受自然条件和社会经济发育程度的深刻影响,农牧业经济要素互补性差;畜牧业内部同构性较强,区域分工不明显;畜产品的商品化过程粗放、低质、低效;畜产品加工企业门类不全,规模不大,带动性差;普遍缺少各种形式的中介机构和协会,农牧民自组织能力不足;缺少交易市场,要素流动受阻,致使畜牧业产业化进程缓慢。因此,在保护草原生态环境的前提下,加强基地建设,大力发展龙头企业,强化农牧业服务体系,实现草地畜牧业向现代畜牧业转型。 相似文献