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<正> 为了从根本上改变我省蚕种业在计划经济向市场经济过渡过程中,蚕种生产与经营中出现的不顾蚕种生产的特殊性,无计划生产蚕种,造成蚕种的供应不足或过多;繁殖蚕种无序,使蚕种质量下降;无计划盲目引进蚕种,使劣质蚕种充诉市场,给蚕农造成较大经济损失;地区间搞“小而全”封闭型蚕种生产供应体系,造成蚕种的产销秩序混乱,高品质 相似文献
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蚕种是蚕桑生产的基本生产资料,决定着蚕桑生产的结果。通过分析重庆市蚕种生产情况和面临的问题,提出解决问题的方法,并说明加强蚕种管理的重要性,只有加强对蚕桑基础生产资料——蚕种管理,才能确保蚕桑生产的用种安全、稳定蚕桑和茧丝绸生产、保证蚕农稳产增收。 相似文献
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在市场经济发展的大潮中,蚕种生产经营正在逐步走出计划经济的框框,优质名牌蚕种愈来愈受用户的欢迎,许多用户舍近求远购买优质蚕种.因此,蚕种流通日益频繁,这就必然要面临蚕种运输问题.对较短距离或较大数量的运输,专用空调汽车是最理想的设备;然而,对于远距离或较少数量蚕种的运输,经营者必然要考虑如何在保证蚕种安全的前提下降低运输成本. 相似文献
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我场成立已40多年,早期主要从事蓖麻蚕的原种和普通种生产,70年代中期后一直从事桑蚕普通种的生产经营.40多年来,在各级政府和上级业务部门的关心和指导下,我场取得了长足的发展,现已具备年生产普通种20万张、冷藏处理蚕种25万张的能力.近年来,我们根据社会主义市场经济发展的规律,在蚕种生产经营中牢固树立品牌观念和质量意识,制订技术管理和质量管理措施,实行规范化管理,努力培育品牌蚕种.经过几年的努力,我场培育的"玉宝"蚕种质量稳定,深受区内外蚕农的信赖.在蚕种生产规范化管理方面我们重点抓好以下几项工作: 相似文献
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本根据蚕种生产的特点以及蚕种生产和经营中存在的问题，论述了蚕种产业化经营的必要性，指出了实现蚕种产业化必须解决的问题。 相似文献
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如何提高蚕种质量和制种量 总被引：2，自引：0，他引：2
蚕种是一种特殊的种子,在繁育蚕种的全过程中每个环节都会影响蚕种的质量和制种量.所谓蚕种质量包括张种卵粒数、卵粒大小、卵色匀整度,外观包装等外观质量以及蚕种的良卵率(充实度)、杂交率、蚁蚕孵化率、微毒率等内在质量.制种量是指克蚁制种数量或千克茧制种数量.二者之间有紧密的联系,是种茧育生产十分重要的两大指标.提高蚕种质量和制种量是蚕种场赖以生存的内在要求,蚕种场只有以质优量足的蚕种去开拓市场才能求生存和发展,现根据我场的实际经验谈谈如何提高蚕种质量和制种量的具体措施,以供同行参考. 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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