卵泡抑素的生物学作用及其机制的研究

卵泡抑素又名ＦＳＨ抑制蛋白（ＦＳＨ ｓｕｐｐｒｅｓｓｉｎｇ ｐｒｏｔｅｉｎ,ＦＳＰ）,是一种单链糖蛋白,有多种形式。作为Ａｃｔｉｖｉｎ的结合蛋白,它可以通过Ａｃｔｉｖｉｎ／ＦＳＰ系统来调节动物的生殖活动。近年来的实验表明,ＦＳＰ可以通过其作用系统,在生殖系统以外的器官例如肝、肾、胰、骨骼、皮肤等器官和组织中起作用。ＦＳＰ在细胞表面有肝素结合区,这有利于发挥其生物学作用。ＦＳＰ更可能是通过旁分泌或自     

IgM单抗体内,外杀伤日本血吸虫的研究

本文报道应用急性感染日本血吸虫的Ｂａ１ｂ／ｃ小鼠脾细胞和ＳＰ２／０骨髓瘤细胞融合，获得了一株具有抗血吸虫攻击感染保护作用的ＩｇＭ单抗ｓｓｊ１４。在被动免疫转移试验中，这株单抗在小鼠体内提供了２７．６９％～６８．５％的减虫率。体外ＡＤＣＣ试验显示该单抗参与了巨噬细胞和嗜酸性粒细胞介导的杀伤血吸虫童虫的作用，免疫化学特性测定表明该单抗同时对血吸虫尾蚴、成虫和虫卵三期虫体抗原起反应，靶抗原的分子量为２９０ＫＤ，分别位于血吸虫童虫和成虫的表膜及虫卵的卵壳。靶抗原表位的化学性质为多糖类，它同时被辐照致弱尾蚴免疫的大鼠血清、血吸虫慢性感染人血清和小鼠血清所识别。本文结果表明，ＩｇＭ抗体和多糖类抗原在血吸虫病免疫保护作用中发挥了重要的作用。     

浅谈植树造林的主要技术方法

人工林不仅作为我国所需木材的主要来源,同时也在保护生态环境中起着至关重要的作用,因此,如何科学合理的进行植树造林工作尤为重要,本文就此做了简要的论述,供参考。     

从猪痢疾猪场鼠体肠道检出猪痢疾蛇形螺旋体

猪痢疾蛇形螺旋体（Ｓｅｒｐｕｌｉｎａｈｙｏｄｙｓｅｎｔｅｒｉａｅ,ＳＨ）是猪痢疾（Ｓｗｉｎｅｄｙｓｅｎｔｅｒｙ,ＳＤ）的病原,该病危害严重。Ｊｏｅｎｓ（１９８２）经试验证实猪痢疾感染猪场野生小鼠带有ＳＨ并成功实验感染于猪,罗满林等（１９８８）经试验表明疫区鼠的ＥＬＩＳＡ血清ＯＤ值明显高于非疫区鼠的ＯＤ值,表明鼠也是猪痢疾不可忽视的传染源和传播媒介。鉴于鼠在猪痢疾传播中所起作用,为此,我们对在某猪痢疾感染猪场捕捉的老鼠进行了ＳＨ分离鉴定工作,现报告如下。１　材料与方法１．１　猪场　某猪场,１９９…     

瑞士和濒危野生动植物种国际贸易公约

瑞士和濒危野生动植物种国际贸易公约罗彤编译野生生物的法律保护在瑞土始于１４世纪的狩猎法规。从那时起．国家坚决支持自然资源保护论者的态度。瑞士现在是濒危野生动植物种国际贸易公约（ＣＩＴＥＳ）的保存国，公约秘书处设在日内瓦。保护历史野生动物保护在瑞士已有...     

滨州市发展高效生态畜牧业的SWOT分析

畜牧业作为我国国民经济的重要组成部分,在农业农村经济和社会发展中地位越发突出,作用也更加明显,业已成为我国农业的主导产业和促进农民增收的重要渠道。畜牧业作为一项关联广泛的重要基础产业,其发展一方面可以大大促进粮食等农副产品的加工转化增值、增效,保护和提高农业比较利益。另一方面又可以带动一批与畜牧业相关的饲料工业、畜产品加工、兽药、畜牧器械等产业的发展,并同时也吸纳大量的农村     

二十三载同携手"爱鸟周"宣传如火如荼

中国野生动物保护协会作为我国最大的民间自然保护组织,自1983年成立以来,始终关注并积极参与我国的野生动物保护宣传工作,每年的“爱鸟周”宣传活动更是开展得如火如荼——普及鸟类等野生动物科普知识、积极支持开展保护野生动物     

论我国对外贸易中知识产权的现状及保护措施

在对外贸易中,知识产权保护被认为是贸易成功的前提条件。只有国际之间存在公平的知识产权保护,才能进行健康有序的国际贸易。知识产权保护越来越处于国际贸易研究的前沿,成为国际贸易发展中的焦点问题。我国对外贸易中知识产权处于薄弱环节,因而,本文着眼于现状,着重研究如何保护我国的知识产权,确保企业在国际贸易中的核心竞争力。     

我国与CAC蛋品兽药残留限量标准

蛋品药物残留标准是规范蛋品质量安全的重要措施,它不仅具有保护消费者身体健康的重要作用,更是WTO成员国实施技术性贸易壁垒的重要手段。本文介绍了我国与国际食品法典委员会(CAC)蛋品药物残留限量标准,以期提高地方蛋品在国际贸易中的竞争力。     

浅谈国际贸易对我国企业技术创新的影响

在世界经济一体化的大背景下,国际贸易对我国的经济发展有着至关重要的作用。在国际贸易中,技术创新是其中非常重要的一个环节,本文主要从进口国和出口国两个角度分析了国际贸易对我国企业技术创新方面的影响。     

奶牛肢蹄病及其防治

简介常见奶牛肢蹄病种类及其症状,从日粮营养、运动场地面结构、环境卫生、饲养管理、遗传育种、疾病管理等方面简析奶牛肢蹄病的病因,并提出相应的预防措施。     

Disease and destiny-mystery and mastery

When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures.     

Foot and mouth disease and bluetongue: differences and similarities

On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures.     

畜禽物种多样性及其保护和利用

文章就我国畜禽物种多样性资源的现状、保护和利用等方面进行阐述,为生态脆弱的喀斯特地区畜牧业可持续发展提供参考。     

马的咽气癖及其防制措施研究进展

在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。     

德国荷兰畜禽产品质量安全交流与启示

2018年岁末,笔者有幸赴德国和荷兰,就畜产品质量安全控制及检测技术等进行了短期交流,收获颇丰,现具体介绍如下。一、交流情况德国面积35.73万平方千米,人口约8175.2万,是欧盟人口最多的国家,农业发达,机械化程度很高。德国的畜牧业以猪、牛、羊和禽类为主,畜牧业产值占农业生产总值的61%。德国虽然农业比重很小,但却是有机农业运动最早的发起国,也是目前世界上有机农产品生产与消费大国。     

广西芒果主要病虫害及其防治

广西是我国主要的芒果生产基地。随着基地建设的发展,芒果病虫害已成为目前栽培管理的主要问题。为此,在调查、研究的基础了介绍了当前芒果生产中常见的病虫害,并提出了防治措施,以期为生产上提供技术参考。     

牛羊焦虫病诊断与防治技术

近几年来,辽宁省牛羊饲养业迅速发展,焦虫病的危害越来越明显,已成为危害牛羊的主要疾病之一。为了提高牛羊焦虫病的防治水平,保证我省牛羊饲养业的健康发展,笔者在参阅文献和同行们诊疗经验的基础上,结合自己的治疗实践,详细阐述了我省牛羊焦虫病近几年的流行特点和诊断防治方法。