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目前很多养鸡户利用塑料大棚养鸡,以解决房舍少要养鸡的问题。有的养鸡户利用蔬菜塑料大棚养鸡,有的用专门设计的塑料大棚养鸡。在品种上有的养肉用仔鸡,有的养蛋用鸡。在饲养方式上有的地面平养,有的网上平养,有的笼养。为了提高养鸡经济效益,笔者认为地面平养不但需很多垫料,而且由于鸡接触土壤、粪便,一些疾病难以控制。所以向用仔鸡、蛋用后备鸡网上平养,蛋用成鸡笼养较为合适。不论饲养什么品种和采用哪种饲养方式,秋冬季节都应注意以下几点：1．防止疾病发生。塑料大棚养鸡虽然经济适用,但总不如房舍养鸡好,在环境温度、… 相似文献
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近年来,我国养鸡业发展迅速,各地先后兴建起了机械化、半机械化的养鸡场,养鸡专业户等也遍布全国城乡。在养鸡生产中,鸡的营养满足或缺失都会影响鸡的生长和发育,以致最终影响产肉、产蛋量和品质,同时还会造成饲料资源的浪费或经济效益的损失,给广大养殖户带来不必要的损失。因此,各地养殖户特别是农村养鸡专业户为了减少养殖成本,必须因地制宜,就地取材,最大限度的利用饲料资源,满足鸡的营养需要。鸡的常用饲料有能量饲料、蛋白饲料、矿物质饲料、青饲料等,以下就农村养鸡常用饲料作简要介绍。 相似文献
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《国外畜牧学(猪与禽)》2021,41(3)
生态放养鸡具有极高的经济、生态和社会价值,是无公害优质畜禽产品的代表之一。本文从放养鸡鸡舍建设、品种选择与饲养模式、育雏鸡管理、放养鸡管理以及疾病防治措施等方面探析了生态放养鸡的综合饲养管理技术,希望对生态放养鸡的健康饲养提供借鉴。 相似文献
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近年来．随着养鸡业的进一步发展．在农村涌现出一大批上规模上档次的养鸡专业户。然而．我们在与养鸡专业户的接触中．发现有些养鸡户在饲养管理上存在着防疫制度不严格、鸡种来源杂、乱加添加剂、滥用药物、饲养员不固定等问题。这些问题都会直接影响到养鸡专业户的经济效益．甚至会造成较为严重的经济损失。现根据上述几个问题提出几点改进方法．供广大养鸡专业户参考。一、严格遵守卫生防疫制度鸡病的种类繁多．病变复杂．但只要我们认真对待卫生防疫工作．细心抓好每一个环节．鸡病是完全可以控制的。有些养鸡专业户不太重视鸡群的隔离… 相似文献
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永安市果园养鸡发展迅速，现年饲养量达千万羽，主要是饲养“贡鸡”系列的麻鸡品种。其育雏的好环直接影响雏鸡的生长发育、成鸡的生长速度和经济效益。果园养鸡多为普通农户，他们缺乏育雏的科学知识，经常由于育雏不当造成损失，为此，笔者就雏鸡的生理特点来谈谈果园养鸡的育雏方法。 相似文献
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所谓“四园”养鸡,是指在茶园、果园、桑园、竹园地里发展适度规模养鸡。即在“四园”生产的基础上养鸡。既不影响“四园”生产又能增加收入。适度规模的鸡只在园地里活动,啄食泥沙、活虫、可食杂草、栖息、游动,有助于增加补充营养,增进食欲,强健体魄。同时鸡只排出的粪便可培 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
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. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
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. 相似文献
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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。 相似文献
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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。 相似文献
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