畜禽驱虫用药六注意

（一）掌握寄生虫在体内的发育史 猪、羊、鸡蛔虫病是由猪、羊、鸡蛔虫寄生于猪、羊、鸡小肠引起的，虫卵随粪便排到体外，在适宜的条件下，经17～20天发育成感染性虫卵。猪、羊、鸡吞食了感染性虫卵后，在小肠中孵出幼虫，钻入肠壁的小血管中，随血液流经肝脏、心脏到达肺部，进入肺泡，经过发育，上行到气管，再随痰液咽下，再次回到小肠中发育成熟。该病主要危害3～6月龄子猪、羊和30日龄雏鸡。     

秋季畜禽驱虫用药注意事项

(一)掌握寄生虫在体内的发育史猪、羊、鸡蛔虫病是由猪、羊、鸡蛔虫寄生于猪、羊、鸡小肠引起的,虫卵随粪便排到体外,在适宜的条件下,经17~20天发育成感染性虫卵。猪、羊、鸡吞食了感染性虫卵后,在小肠中孵出幼虫,钻入肠壁的小血管中,随血液流经肝脏、心脏到达肺部,进入肺泡,经过发育,上行到气管,再随痰液咽下,再次回到小肠中发育成熟。该病主要危害3~6月龄子猪、羊和30日龄雏鸡。     

怎样给猪驱虫效果佳

猪寄生虫病虽有多种 ,但以蛔虫病最为常见 ,对猪的危害也特别严重。轻者猪发育不良 ,生长缓慢 ;重者形成僵猪 ,甚至死亡。怎样给猪驱虫效果好 ,现以蛔虫病为例介绍如下。1　猪蛔虫的发育史猪蛔虫病是由猪蛔虫寄生于猪小肠引起的。 1条雌虫 1昼夜可产卵 10万～ 2 0万个 ,虫卵随粪便排到体外 ,在适宜的条件下 ,经 17～ 2 0ｄ发育成感染性虫卵。猪吞食了感染性虫卵后 ,在小肠中孵出幼虫 ,钻入肠壁的小血管中 ,随血液流经肝脏、心脏而到达肺 ,进入肺泡 ,经过发育上行到气管 ,再随痰液被咽下 ,又回到小肠中发育到成熟。 1个感染性虫卵 ,从被猪吃…     

猪蛔虫病防治

<正>1病原猪蛔虫病是猪蛔虫寄生于猪小肠引起的。蛔虫虫卵随病猪粪便排到体外,在适宜的条件下,经17~20d发育成感染性虫卵。感染性虫卵在病猪小肠中发育成幼虫,并钻入肠壁的小血管中,随血液流经肝脏、心脏到达肺,随后进入肺泡,上行到气管,再随痰液咽下,又回到小肠中发育至     

猪蛔虫病的防治措施

本病是由猪蛔虫寄生于猪小肠内所引起的一种线虫病。此病在养猪地区广泛流行,3～6月龄仔猪最易感染。临床特征为引起蛔虫性肺炎,生长发育不良,增重变慢,严重感染时,发育停滞,成为僵猪,甚至死亡。1病原与流行病学猪蛔虫是大型、圆柱状的线虫,活的虫体呈黄白色或淡红色。雄虫体长15～30cm,尾端向腹面蜷曲呈钓鱼钩状。雌虫体长25～40cm,尾端直。寄生在猪小肠内的雌虫受精后,产出大量虫卵,随粪便排至体外,在外界适宜的温度、湿度和氧气的条件下,经一段时间发育为感染性虫卵。感染性虫卵随同饲料或饮水被猪吞食,或猪只到处觅食而食入,卵壳被小肠…     

防治猪寄生虫病有技巧

猪寄生虫虽有多种,但以蛔虫病最为常见,对猪的危害也特别严重,轻者发育不良,生长缓慢,严重者形成僵猪甚至死亡。可见驱虫也是生猪育肥的重要措施之一,但要获得较理想的效果却要掌握一定块窍。 1 猪蛔虫病因 由猪蛔虫寄生于猪小肠引起的。猪吞食了感染性虫卵后,在小肠中孵出幼虫,钻入肠壁的小血管中,随血液流经肝脏、心脏而达到肺,进入肺泡,经过发育上行到气管,再随痰液被咽下,又回到小肠中发育成熟。一     

鸡常见消化道线虫病的诊治

正1鸡蛔虫病本病分布很广,散养条件下易发,常引起雏鸡进行性消瘦,下痢,生长迟缓,甚至造成大批死亡。1.1虫体特征与生活史蛔虫寄生于小肠中,是鸡体内最大的一种线虫,肉眼可见呈黄白色,雄虫长26~70mm,雌虫长65~110mm。蛔虫卵随鸡粪排出体外,在适宜条件下发育为感染性虫卵。鸡吞食了被感染性虫卵污染的饲料和饮水而遭感染。幼虫在鸡的消化道中由卵内逸出,钻入十二指肠粘膜,经过一段发育之后又返回肠腔,发育为成虫。从感染开始到     

不可轻视猪蛔虫病的危害

<正>1发病原因猪蛔虫是猪肠道寄生的大型蠕虫之一,虫体以肠黏膜表面物质和肠内容物为食,虫卵不断随粪便排出体外。猪在采食或饮水时吞食感染性虫卵,从感染性虫卵被猪吞食到发育为成虫须经2～2.5个月。如果环境卫生不良,母猪的乳房很容易污染虫卵,造成仔猪在吸奶时受到感染;如果缺乏全价饲料喂养,常可引起大批发病。     

猪常见胃肠道寄生虫病及其预防

1常见胃肠道寄生虫的特点 1．1蛔虫：是一种大型线虫，呈红色或黄白色，主要寄生在猪小肠，有时移行到胆囊和胃里。患蛔虫病的猪生长发育不良，严重感染时，变为僵猪，甚至死亡。猪蛔虫的受精卵，随猪粪便同时排出体外，在适宜的温度和湿度下。约经17～20天。发育成为有感染性的虫卵。可污染饲料或饮水。当被猪吞食后，在小肠中发育成虫。[第一段]     

猪消化道寄生虫的特点及患病的防治

1 特点 蛔虫是大型线虫,呈红色或黄白色,似蚯蚓,主要寄生在猪的小肠,有时移行到胆囊和胃里,偶尔会发现虫体由口和鼻孔里钻出来.患蛔虫病的猪生长发育不良,严重感染时变为僵猪,甚至死亡,猪蛔虫的受精卵随猪粪便一起排出体外,在适宜的温度和湿度条件下,约17～20天发育成为有感染性的虫卵,可污染饲料或饮水.当被猪吞食后,卵壳即被小肠液消化溶解,幼虫脱壳而出钻入小肠壁,随血液或直接经组织而进入肝脏,再随血液经右心室到达肺脏,然后由经微细血管进入肺泡,再经细支气管移行到支气管和气管.在气管中与粘液一起到达咽部,随吞咽而到达胃肠中,在小肠中发育为成虫.     

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.     

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。     

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。     

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。     

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。     

国内外蛋氨酸与赖氨酸市场分析与展望

近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2％的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。