嘉荫县狗寄生蠕虫区系调查报告

对嘉荫县犬体寄生蠕虫区系调查，结果，共剖检本地狗１０只，检获蠕虫４种，吸虫１种－华枝睾吸虫（ＣｌｏｎｏｒｃｈｉｓＳｉｎｅｎｓｉｓ）；绦虫１种－泡状带绦虫（Ｔａｃｎｉａｙｈｙｄａｉｔｉｇｅｎａ）线虫两种－犬弓首线虫（Ｔｏｘｏｃａｒａｃａｎｉｎｕｍ）犬钩口线虫（Ａｕｃｙｌｏｓｔａｍａｃａｎｉｎｕｍ）４种虫体隶属于３纲４属，其中分布广和感染率高的为犬钩口线虫（５０％）为嘉荫县犬寄生蠕虫的优势种。     

碱茅属植物抗盐性与抗盐机制的研究进展

本文主要概括了甘肃草原生态研究所的有关研究结果认为：碱茅（Ｐｕｃｃｉｎｅｌｌｉａｔｅｎｕｉｆｌｏｒａ）种子萌动（相对发芽率达５０％）时的硫酸盐盐渍度２．５～２．７ｇ／１００ｍｌ，ＮａＣｌ为１．６～１．８ｇ／１００ｍｌ，Ｎａ２ＣＯ３为０．９～１．２ｇ／１００ｍｌ。碱茅的抗盐机制为：（１）对Ｎａ＋、Ｋ＋的选择性吸收与运输；（２）渗透调节适应；（３）合成积累有机物质的保护作用等多途径。小花碱茅叶片无盐腺组织，纠正了将其划为泌盐植物的观点。在灌溉条件下建植的Ｐ．ｔｅｎｕｉｆｌｏｒａ－Ｐ．ｃｈｉｎａｍｐｏｅｎｓｉｓ草地，有改良耕层土壤的作用，土壤盐分的下移灌水起主导作用；减少返积盐（向上返盐），草起主要作用。     

低聚果糖对动物的作用机理及其应用

低聚果糖（ Ｆｒｕｃｔｏｏｌｙｇｏｓａｃｃｈａｒｉｄｌ， ＦＯＳ）又称寡果糖、果寡低聚糖、蔗果三糖族低聚糖等，分子式为Ｇ－Ｆ－Ｆｎ（Ｇ葡萄糖，Ｆ果糖，ｎ＝１～３），是在蔗糖分子上以β－１，２糖苷键结合数个Ｄ果糖所形成的一组低聚精总称，广泛存在于香蕉、大麦、小麦、大蒜，洋葱、黑麦、马铃薯、洋姜、莴苣、菊芋等植物及酵母中，但提取较为困难，且难以批量生产，高品位ＦＯＳ制剂主要是利用微生物和植物中具有的果糖转移活性酶（β－呋喃果糖苷酶、果糖转移酶）作用于蔗糖，经脱色、过滤、脱盐及浓缩精制而成，主要含ＧＦｎ…     

阿维菌素驱猪蛔虫临床疗效观察

阿维菌素（Ａｖｅｒｍｅｃｔｉｎ）是一种新型的大环内酯类抗生素，对动物的寄生线虫和节肢动物等均有优良的驱杀作用。其特点是：广谱、高效、安全、无残留、无抗药性。猪蛔虫（Ａｓｃａｒｉｓｓｕｕｍ），感染普遍，感染率一般在５０％以上；分布广泛，可降低生猪增重３０％左右。１　材料与方法１－１　动物　新桥镇新华三村八社农民饲养猪４０头，体重３０ｋｇ～６０ｋｇ，试验前未用任何驱虫药。１－２　药物　阿维菌素片剂，由桂林集琦药业股份有限公司生产，２００片瓶，５ｍｇ片。１－３　试验方法１－３－１　将４０头猪随机分…     

纤维素酶与饲料生产

纤维素是地球表面天然起源的有机物质之一。一株植物中的纤维素约占干物质总重量的２／３。据估计，仅通过光合作用产生的纤维素每年就有１７００亿ｔ之多。人们在建筑、造纸、纺织等方面应用的纤维素，只是其中的极少部分。纤维素是由β－Ｄ葡萄糖分子以β（１→４）糖苷...     

猪核移植重组胚胎的发育能力

以ＭｃＧｒａｔｈ－Ｓｏｌｔｅｒ（１９８３）提供的去（注）核方法，将猪胚胎的单个卵裂球细胞注入去核的次级成熟卵母细胞，借助电融合的方法（ＡＣ；５Ｖ，１．５ＭＨｚ，１２－１５ｓ；ＤＣ：２ｋＶ／ｃｍ，４０μｓ。电激活／融合液：０．３ｍｏｌ／Ｌ甘露醇＋－．１ｍｍｏｌ／ＬＭｇＳＯ４＋０．１ｍｍｏｌＣａｃＬ２＋７．５ｍｇ／ｍｌＣＣＢ）融入受体胞质构成重级胚，体外培养（培养液为改衣ＴＣＭ－１９９；培养条件为５％     

泌乳曲线的数学描述

泌乳曲线可用一般方程Ｙ＝Ａ１（ｔ）２（ｔ）来进行数学表述，方程中Ａ为一个正纯数，（ｔ）是单调增函数，１＝１为其渐近线，２是一个单调减函数，它具有单位起始值，２＝０为其渐近线。可供１．选择的函数有：１—ｂ。ｅ－ｂ１ｔ（Ｍｉｔｓｃｈｅｒｌｉｃｈ）、１／［１＋ｂ。／（ｂ１＋ｔ）］（Ｍｉｃｈａｅｌｉｓ－Ｍｅｎｔｅｒ）、１／［１＋ｂ０／（ｂ１＋ｔｂ２）］（一般动态饱和）、１／（１＋ｂ。ｅ－ｂｔ）（罗辑斯谛）、ｂ。ｅｘｐ［（—Ｉｎｂ。）（１—ｅ－ｂ１ｔ）］（Ｇｏｍｐｅｒｔｚ）和［１＋ｔａｎｈ（ｂ。＋ｂ１ｔ］／２（双曲正切）；可供２选用的函数有：ｅ－ｅｔ（指数）和１／（１＋ｃｔ）（倒直线）。于是可得到１２种模型，且Ｙ＝Ａｔｂｅ－ｅｔ（Ｗｏｏｄ模型）适合于２３头试验牛整个泌乳期内的数据。Ｍｉｔｓｃｈｅｒｌｉｃｈ×数式、Ｍｉｃｈａｅｌｉｓ－Ｍｅｎｔｅｎ×指数式、罗辑斯谛×指数式、罗辑斯谛×倒直线式及Ｗｏｏｄ模型都很适配。有了这些模型，达到产奶高峰的时间、最大产奶量、整个泌乳期的总产奶量以及在衰减期中点的相对衰减等的表达式都得到了。Ｍｉｔｓｃｈｅｒｌｉｃｈ×指数式模型一般比Ｗｏｏｄ模型适配得更好，与Ｗｏｏｄ模型不同的是，它对所?     

蒙古高原天门冬属植物的分类研究

确认了蒙古高原天门冬属植物有１３种（其中包括２个栽培种）、１变种；把Ａｓｐａｒａｇｕｓ ｂｏｒｅａｌｉｓ Ｓ．Ｃ．Ｃｈｅｎ和Ａ．ｄｏｌｉｃｈｏｒｈｉｚｏｍａｔｕｓ Ｊ．Ｍ。Ｎｉ ｅｔ Ｒ．Ｎ．Ｚｈａｏ并入了Ａ．ｐｒｚｅｗａｌｓｋｙｉ Ｉｖａｎｏｖａ；发现了新变种－Ａ．ｐｒｚｅｗａｌｓｋｙｉ Ｉｖａｎｏｖａ ｖａｒ。ａｌａｓｃｈａｎｃｕｓ Ｙ．Ｚ．Ｚｈａｏ ｅｔ Ｊ．Ｘｕ；比《内蒙古植物志》（第２版     

电导法配合Logistic方程确定燕麦冰冻半致死温度

采用电导法对８个燕麦品种在不同低温下细胞膜透性改变情况进行研究，然后配合Ｌｏｇｉｓｔｉｃ方程求拐点值确定冰冻半致死温度（ＬＴ＿（５０））。试验结果：低温处理下，燕麦组织电解质透出率增加呈Ｓ形曲线增长，在－４℃～－１０℃之间随着温度的下降，燕麦组织电解质透出率有一急剧升高的敏感区域；燕麦品种ＬＴ＿（５０）在－３．３～－８．０之间；品种永久１２抗冻性最强，品种Ｖｉｃｔｏｒｙ其次，品种Ａｔｈａｂａｓｃａ抗冻性最差。     

引入青海的辽宁绒山羊心电图分析

对３４只引入青海的辽宁绒山羊肢　导联，双极胸导联　和Ａ－Ｂ导联共１０个导联的心电图进行了分析和研究，结果发现：①平均心电轴显著右偏，为＋１　３４．４°±７６．７°；②皆为窦性心律，但窦律不齐的出现概率达６４．７％；③Ｐ波和Ｔ波波向一致性　较好的有Ⅰ，Ⅱ，Ⅲ，ａＶＦ和Ａ－Ｂ导联（正向）以及ａＶＲ导联（负向）；④ＣⅡ，ＣⅢ和Ａ－Ｂ导联的ＱＲＳ　综合波波型较为恒定，分别呈ｑＲ型，ｑＲ型和Ｒ型以及ｒＳ型；⑤波及间期时限：Ｐ波，０．０４９ｓ（０．０４　～０．０８ｓ）；ＱＲＳ综合波，０．０５９ｓ（０．０４～０．０８ｓ）；Ｔ波，０．０７２ｓ（０．０４～０．１２ｓ）；Ｐ－Ｑ间期，０．１０　７ｓ（０．０８～０．１６ｓ）；Ｑ－Ｔ间期，０．３０６ｓ（０．２２～０．３８ｓ）；Ｒ－Ｒ间期，０．６７２ｓ（０．４２～１．１１ｓ）。     

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。