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《中国畜牧兽医文摘》2012,(1)
<正>当前规模化养鸡成为肉鸡生产的主要形式,个别养鸡场养殖条件不完善,在阴雨天气,潮湿环境下,肉鸡很容易发生鸡球虫病。肉鸡球虫病可以造成严重的经济损失,尤其对雏鸡危害十分严重,以15~50日龄雏鸡发病率和死亡率最高,以血痢、贫血、消瘦为特征,成年鸡多为带虫者。笔者采用中医方法治疗肉鸡球 相似文献
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平养肉鸡球虫病综合防治措施兰州华陇家禽育种公司魏兴军鸡球虫病是由艾美耳球虫引起的一种常见的原虫病,对养鸡生产危害极大。主要发生于三个月内雏鸡,在8-6周龄雏鸡中发病率达91%,死亡率高达50%以上。抗过的病鸡生长发育受到严重影响,且诱发疫病,降低饲料... 相似文献
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球虫病是肉鸡养殖生产中最常见也是危害最大的疾病之一。球虫从雏鸡开始携带,并伴随家禽一生。尤其是饲养在温暖、潮湿环境中的肉鸡容易发生此病,死亡率最高可达80%。病愈鸡生长严重受阻,抵抗力降低,容易继发其他疾病。成年鸡多为球虫携带者,致使增重和产蛋能力降低。1流行病学各品种鸡均有易感性,15~50日龄的鸡发病率和致死率都较高。11日龄以内的雏鸡由于有母源免疫力的保护,很少发生球虫病。成年鸡对球虫有 相似文献
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鸡坏死性肠炎与鸡球虫病混合感染是春夏炎热、多雨、潮湿季节多发的疾病,尤为两个月内的雏鸡发病率高,死亡率也很高,对肉鸡生产危害极大。搞好本病的防治工作非常重要,现将有关病例诊疗效果总结如下。 相似文献
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鸡球虫病属于肉鸡常见的肠道寄生虫病,青年鸡以及雏鸡是该病的主要发病群体,该病具有较强的传染性。该病为鸡通过土壤、饲料、饮水等吞噬了感染性卵囊而发病,当病情较急时可引起鸡大量死亡,慢性疾病则可对鸡只的生长发育造成影响,降低产蛋能力,降低饲料转化率。现对鸡球虫病的危害和防治方法探讨如下。 相似文献
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正白羽肉鸡是我国主要的肉鸡养殖品种之一,白羽肉鸡具有生长周期短,生长速度较快、出栏率高、饲料利用料较高等多种优点,在我国广泛养殖。鸡球虫病是由艾美耳属多种球虫寄生在鸡肠上皮细胞的一种原虫病,艾美耳属多种球虫可以感染不同品种、不同品种、不同年龄阶段的鸡,尤其雏鸡危害较大。由于鸡球虫危害大、分布广,感染雏鸡后可以造成不同程度的死亡,发病率高至50%~70%,死亡率为20%~30%,严重时高达80%,严重危害养鸡业的发展,现公认的鸡艾美 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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