奶牛乳房水肿病的综合防治体会

在奶牛养殖过程中乳房水肿病是围产期常见的一种疾病,临床症状严重,如果治疗不及时会对奶牛的终身产奶量产生严重的影响,对奶牛养殖带来一定的经济损失。根据临床工作经验,从本病的危害、分类、症状、预防和治疗等几个方面进行总结,旨在为临床兽医工作者和养殖户提供参考依据。     

奶牛乳房炎的防控措施

奶牛乳房炎在奶牛养殖业中是常见疾病,对于奶牛养殖危害巨大,会造成牛奶品质下降,降低奶牛的产奶性能,在治疗过程中使用药造成的弃奶、药物治疗费用也会影响养殖的经济效益,因此奶牛乳房炎的防控十分关键。     

农区奶牛乳房炎的中西医综合防治

<正>随着奶牛的养殖,奶牛乳房炎不断在广大农区发生,笔者经一年多时间的调查发现,农区奶牛养殖户中奶牛乳房炎已成多发常发病之一,给奶牛养殖户造成了重大经济损失。有些奶牛发病后由于发现不及时或因治疗方法不当而无法治愈被淘汰,损失更为严重。奶牛乳房炎是严重危害奶牛业的三大疾病之一,是造成养殖户     

奶牛乳房炎的综合防治技术

近年来,奶牛生产发展迅速,但奶牛乳房炎仍然是生产实践中较为常见的疾病,导致牛奶的产量和质量下降,经济损失严重。从奶牛乳房炎的诊断、预防和治疗三个方面进行阐述,以期为奶牛生产者提供参考。     

中草药治疗奶牛乳房炎研究进展

奶牛乳房炎是由于各种病理性因素造成的炎症,也可称为乳腺炎,其中隐性乳房炎已成为危害奶牛业最常见的疾病之一。阐述了单味中药、复方中草药、中草药的活性成分及其衍生物等治疗奶牛乳房炎的具体药方,着重介绍了中草药治疗奶牛乳房炎的机理机制。     

浅谈奶牛乳房炎的防治

<正>在奶牛业生产中,奶牛乳房炎是一种病因复杂的、造成奶牛业经济损失严重的乳腺疾病。国内外资料显示,各种类型的奶牛乳房炎尤其是隐性乳房炎的发病数约占泌乳期奶牛总数的1/3[1]。近年来,奶牛乳房炎的研究取得了积极进展,对于提高生产率、减少经     

奶牛乳房炎的病因及防治措施

奶牛乳房炎是乳腺组织受到病原菌及化学、物理因素刺激而引发的一种炎性疾病。文章综述了奶牛乳房炎的各种病因和临床表现,预防和治疗措施。     

浅论奶牛乳房炎的防治措施

奶牛生产中乳房炎是影响奶牛生产的重要疾病之一,怎样控制乳房炎已成为奶牛生产的重要课题。抓住导致奶牛乳房炎的因素,搞好奶牛的饲养管理和疾病预防控制,是提高奶牛生产的重要技术要点。     

奶牛乳房炎发病情况调查及防治对策

<正>奶牛乳房炎是由多种病原微生物、物理因素或化学刺激引起的奶牛乳腺组织发生病理变化的疾病。不仅影响奶牛的生产性能,严重的或者治疗不当的可造成乳腺坏死,继而造成奶牛非年龄老化而淘汰,经济损失相当严重。为摸清奶牛乳房炎的发病情况和影响因素,预防奶牛乳房炎的发生提供科学和防治对策,我们于2012年6月至2013年6月对该地区奶牛乳房炎的发病情况开展了一次全面的调查。     

奶牛乳房炎的诊断及防治

奶牛乳房炎(Bouine Mastitis)又名奶牛乳腺炎,是奶牛业最常见、最多发的一种疾病,是危害奶牛业发展的一大主要疾患,该病不仅降低了奶牛产奶量和奶的品质,而且还影响奶牛发情和妊娠,病情严重者因产乳量明显减少或失去泌乳能力而被淘汰。本文根据国内外奶牛乳房炎综合防治现状,提出了适宜本地奶牛乳房炎的诊断及防治措施。     

休闲渔具的设计模式研究

休闲渔业是集渔业、旅游、观光、休闲为一体的产业，是渔业发展中的新领域，渔业经济新的增长点，是滨海旅游业的一个支柱项目。本文从旅游业的发展入手，阐述了休闲渔业的现状与发展前景，进而着重探讨了休闲渔具的设计理论、适应性、主要类别、各自的优缺点、如何改进创新及休闲渔具的发展前景等相关的问题。     

鱼类学课程建设的实践与思考

就《鱼类学》课程建设的实践进行了总结,介绍了教学内容、教学方法和教学手段的改革以及加强实践教学和建立一支高素质、高水平的教师队伍等,最后提出了设想。     

人工湿地及其在水产养殖废水处理中的应用

近年来我国水产养殖业迅速发展,同时水体污染、富营养化日益严重,这严重制约了水产养殖业的发展。如何简便有效地处理养殖废水成为水产养殖业健康持续发展的关键。人工湿地作为一种经济、高效的废水生态处理技术,日益受到人们广泛的关注。本文主要介绍了人工湿地的构建、分类、废水处理机理及其在养殖废水处理中的应用。     

A framework for the study of macronutrient intake in fish

A good understanding of the capabilities of commercially reared fish species to regulate intake of specific macronutrients has potential economic, welfare and environmental benefits. We present a conceptual and experimental framework for studying macronutrient intake in fish. This ‘geometric’ approach addresses the multidimensional and interactive nature of nutrition. It was developed from work on insect herbivores and has successfully been applied to mammals and birds. The various components of the framework are introduced in simple outlines, and key experimental designs are described for assessing whether or not fish specifically regulate their intake of macronutrients, how they balance over-ingesting some nutrients against undereating others when provided with suboptimal diets, and how they regulate growth post-ingestively.     

Communicating Risks and Benefits of Aquaculture: A Content Analysis of US Newsprint Representations of Farmed Salmon

It is widely recognized that mass media can affect public perception of risk. In recent years, the public has been exposed to stories on emerging health and environmental risks, including risks from aquaculture. Two key studies (“trigger events”) compared contaminants in farmed and wild salmon and evaluated potential health risks of consumption. This study investigates how US newspaper coverage of farmed salmon fluctuated in the face of this emerging scientific information and which types of purported risks and benefits received the most attention. We hypothesized that media attention to farmed salmon would focus more on negative information (e.g., health risks) than on positive information (e.g., health benefits) and that those health risks highlighted most often would be dramatic, rare, or vivid. US newspaper stories specific to farmed salmon and published from 2000 to 2005 were collected from online databases (N = 206). Stories were content analyzed for amount of text covering various human health and environmental risks and health benefits associated with farmed salmon. Over all time periods, 49% of text about farmed salmon discussed human health risks, while benefits were described less than 10% of the time. The two trigger events corresponded with a shift in media attention away from environmental risks to human health risks, as media generally reported the studies’ conclusions as true. Risks emphasized the most tended to be severe or dreadful, such as cancer and developmental defects, while other health risks and all environmental risks received much less attention. This pattern presented the public with a message of severe health consequences from consuming farmed salmon and could induce the public to perceive health risks as being much greater than could be offset by its health benefits.     

建立贝类安全生产预警机制数学模型的方法初探

本文介绍贝类安全生产预警机制模型建立的基本思想,运筹学、数理统计学、计算机技术在建立模型上的实际应用.     

亟待保护的鱼类--银色弓鱼

银色弓鱼系伊犁河──巴尔喀什湖的土著鱼类,该鱼产量在历史上曾占该水系渔获量的70％以上,受渔业经济活动的影响,资源严重衰退,濒临灭绝。本文对其生物学特征进行简述,同时就其濒危原因进行探讨,提出保护措施。     

Ecosystem‐based fisheries management: A perspective on the critique and development of the concept

The concept of ecosystem‐based fisheries management (EBFM) has been subjected to debate since it was introduced in the late 1990s. The development of the concept seems to follow two separate but simultaneous trajectories of increased popularity but also sustained critique. This paper offers an analysis of potential mechanisms behind these disparate trajectories by drawing on a theoretical framework from science and technology studies (STS) centred around "black box" and actor‐network theory. To support our analysis, we perform an exploratory literature review of how the EBFM concept has been used in a selection of high impact fisheries research papers. We find that the popularity of EBFM does not guarantee its integrity, usefulness or analytical insight, but also that persistent critique of how the concept is used seems to be driving some change. We think that a continued trajectory of increased understanding, contextualization and discernibility of EBFM can help overcome the considerable ambiguity associated with the concept and make it increasingly useful to fisheries management. This means moving away from routine use of the term towards a practicable and tangible approach to improve fisheries sustainability.     

如何选购七彩神仙

本文对鞍山地区的水产品及水产加工品做了详实的市场调查,共调查到五百余个品种隶属三大类,并对市场的实际情况做了分析,阐述了作者的观点.     

危害莼菜的几种摇蚊幼虫

莼菜为长江中下游地区民众喜爱的菜肴,具有较高的营养价值。本文重点叙述主要危害莼菜的三带环足摇蚊Cricotopus trifasciatur(Panzer)幼虫,记述了这种幼虫的特征和生长环境以及这类幼虫危害莼菜的过程和结果。同时亦简要介绍了另外两种对莼菜危害较轻的摇蚊幼虫,描述了它们的形态和分布。最后作者对防治方法提出了探讨性意见。