共查询到20条相似文献,搜索用时 46 毫秒
1.
2.
近年来,随着我国农业科学技术的显著提升,农业现代化建设进程不断加快,畜牧业已成为我国农业经济的重要产业,有的地区以现代化养殖技术取代了传统的养殖模式,养殖效率得到很大的提高,养殖户的经济效益也相应提升.但目前我国尚未出台一套完整的畜牧养殖技术推广标准,大部分地区仍采用传统的养殖方式,阻抑了现代化畜牧养殖技术的推广与应用,因此,我国应该加大对现代化畜牧养殖技术的推广力度.本文通过论述我国畜牧养殖技术推广中存在的主要问题,提出笔者对畜牧养殖技术推广的几点建议. 相似文献
3.
4.
我国草原类型多样、分布广,具有多种生态功能,是重要的生态屏障,也是优质特色畜产品生产基地.改革开放以来,我国草原保护建设取得了长足进步,但由于不合理利用而导致的草原退化、沙化和盐碱化问题依然严重.了解国外草原情况,借鉴其草原保护管理以及草原畜牧业发展中的成功经验,将有助于我国草原的保护建设和草原畜牧业发展. 相似文献
5.
6.
在草原保护和建设中维新求治 总被引:2,自引:2,他引:0
我国草原生态"局部改善,总体恶化"的趋势仍没有从根本上扭转,草原保护和建设的任务还十分艰巨,为此国家实施了多项草原生态保护和建设工程,取得了较好的生态、经济和社会效益.在新形势下,理念的滞后、生产方式的落后和草原资源的不合理利用.已成为草原保护和建设的制约因素.转变观念善待草原,转变生产方式合理利用草原,应用生态经济学理论科学管理草原,是新形势下草原保护和建设的要求. 相似文献
7.
8.
9.
为了学习和借鉴巴西草原保护建设和合理利用的技术和管理经验.由农业部和国家外专局联合组织的草原保护建设和合理利用培训团一行12人.于2006年11月7-27日.在巴西进行了培训考察。培训团先后与巴西国会农牧业与环境保护委员会、联邦政府农业部、环境保护署、农业科学院和巴西利亚首都行政区农业厅等有关单位进行了座谈交流.听取了巴西农业科学院稀疏草原研究所、巴西利亚首都行政区农牧技术推广总公司、巴西利亚畜牧技术推广中心的情况介绍.实地考察了巴西天然草原、人工草场、农牧场、牛奶加工站等.在巴西利亚大学就巴西草地生态、人工种草、牧草与饲料作物的生产和贮藏、遥感信息系统应用管理、放牧管理、畜产品加工和牲畜繁育改良等内容进行了一周的教学培训. 相似文献
10.
11.
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
12.
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
13.
14.
15.
16.
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
17.
18.
在归纳总结RFLP和PCR-RFLP标记技术的原理、优缺点的基础上,系统论述了其在牦牛遗传育种研究中的应用现状,并提出了个人的建议和看法。 相似文献
19.