共查询到20条相似文献，搜索用时 74 毫秒
1.
本文分析道口栏门自动误关门的时机和原因,以及对道口自动信号报警电路的研究,设计了栏门关门与道口自动信号报警的联锁防护电路,防止道口栏门误动与公路车辆发生相撞事故。 相似文献
2.
1现状
民和县位于青海省的东部，地处甘青两交界，与兰州市红古区为毗邻，因民和县特殊的地理位置，目前设在县境内的进入青海省动物防疫监督检查站有四个，分别是马场垣高速公路动物防疫监督检查站、民和县享堂公路动物防疫监督检查站、民和县马场垣团结公路动物防疫监督检查站和民和县官厅公路动物防疫监督检查站。其中，马场垣高速公路动物防疫监督检查站是青海省动物卫生监督所的派出机构，“享堂、团结、官厅”三个检查站隶属民和县畜牧局，是民和县动物卫生监督所的派出机构。在进入青海省的21个公路动物防疫监督检查站中，其中进入民和县境内检查站的动物及其产品数量最大，车流量最多。2013年进入民和县境内的进青动物及其产品车辆月均为664辆，运载动物24.31万头（只匹）。其中无证运输动物车辆月均54辆，年内查出疑似染疫动物车辆2辆，来自通报疫区有免疫耳标并持有检疫证明。经外观检查无临床症状的运输动物车辆11辆，来自通报疫区而无免疫耳标而持有检疫证明，外观检查无临床症状的车辆7辆，然而四个检查站至今还没有设立一处动物隔离场地。 相似文献
3.
道口烧鸡是传统名代食品，以其独特风味享誉国内外。随着人民生活水平的提高，对道口烧鸡的需求越来越大，致使鸡源缺口很大。为解决此问题，根据遗传学原理，进行了道口烧鸡适用鸡的杂交选育。父本采用艾维茵父母代，母本用迪卡、罗斯、京白商品一代和当地柴鸡，分别进行杂交，经过初试和复试，发现各杂交组合的成活率、抗病力、生长速度、饲料报酬、烧鸡出肉率等各项指标均高于对照组，而各组中又以安杂2号（A♂×L♀）效果最好，所以基本确定为道口烧鸡适用鸡。 相似文献
4.
5.
6.
7.
国家无规定动物疫病区公路动物防疫监督检查站是经省人民政府同意，由省畜牧食品局、公安厅、交通厅联合批准成立的省公路动物防疫监督检查站(以下简称动检站)。动检站的地址处于省与省之公路交界处或国家无规定动物疫病区示范区的县市与不是国家无规定动物疫病区示范区的县市之公路交界处，前者动检站是在原临时性公路动物防疫监督检查站基础上成立的，后者动检站其主要经费是用国家国债资金来购买诊断仪器、交通工具、摄相机等器件的基础上建成的。 相似文献
8.
2013年5月份，大连一家有500头基础母猪的猪场送到辽宁健康养殖研究中心4头病猪。笔者对4头病猪进行病理剖检和实验室检查，最后确诊为猪食道口线虫感染，现将诊断情况报道如下。 相似文献
9.
10.
11.
12.
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
13.
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
14.
15.
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
16.
17.
18.
19.
