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辽宁省具有发展柞蚕产业的天然优势,其柞蚕产业在全国柞蚕产业中占据重要地位,但近些年,辽宁省柞蚕产业有下降趋势。为了解辽宁省柞蚕产业可持续发展能力,以铁岭市西丰县宝兴村为代表,实地调查了该村的柞蚕养殖情况,发现柞蚕养殖散户多,生产标准化程度低,缺少专用机械设备,柞蚕种卵质量参差不齐,养殖人员老龄化严重,新技术接受度较低。建议成立更多专业合作社,加强技术推广,改良柞蚕养殖场,持续推进蚕种研发,实行柞蚕养殖农业保险,以促进辽宁省柞蚕产业发展。 相似文献
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浅谈辽宁柞蚕生产的经济效益与生态效益 总被引：2，自引：1，他引：1
柞蚕业是辽宁省特色产业,创汇产业,为辽宁省"三高"农业的重要组成部分.多年来,柞蚕业为繁荣农村经济、增加农民收入作出了重要贡献.然而,由于种种原因,柞蚕生产与生态建设的利与弊,一直都是柞蚕业是砍还是留问题争论的焦点. 相似文献
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辽宁省是我国柞蚕的主要产地,产茧量占全国60％ 以上,大连地区是辽宁省八大蚕区之一,拥有丰富的柞蚕种质资源.柞蚕丝素肽的应用研究,改变了过去养蚕 缫丝的单一生产模式为养蚕 缫丝 功能食品、化妆品、生物新材料等新型的生产模式,为稳定与拓展柞蚕产业提供了新的应用途径.辽宁省农业科学院大连生物技术研究所是国家蚕桑产业技术体系... 相似文献
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柞蚕生产是辽宁省的传统产业和优势产业 ,科技进步和柞蚕资源综合利用使柞蚕业迎来新的发展机遇。按照辽宁省柞蚕生产“巩固提高、稳步发展”的方针 ,从柞蚕生产的要素——蚕种、蚕场、柞蚕生产技术三个方面 ,分析了柞蚕生产仍蕴含着巨大的发展潜力 ,并针对柞蚕生产中存在的制约因素 ,提出了进行内涵式潜力开发的有效措施和途径。 相似文献
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辽宁省柞蚕种质资源保存与利用研究进展 总被引：2，自引：0，他引：2
辽宁省是我国柞蚕茧的主要产区和柞蚕资源的主要分布区域。自20世纪50年代以来,辽宁省系统开展了柞蚕种质资源的收集、保存、鉴定与开发利用研究,为柞蚕遗传学研究、优良新品种的选育以及柞蚕业的可持续发展奠定了重要的基础。在概述辽宁省柞蚕种质资源收集保护以及基础性评价和创新利用研究主要进展的基础上,阐述了柞蚕种质资源研究今后的重点工作:开展对珍稀、濒危柞蚕种质资源的收集保护以及柞蚕种质资源共享平台建设;充分利用现代分子生物学技术评价柞蚕种质资源的遗传多样性,发掘利用有益的基因资源;深入研究柞蚕主要生物学性状以及主要经济性状的遗传规律、目标基因分子标记定位、转基因技术等,促进柞蚕传统育种向现代化育种的方向转变。 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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