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本文回顾分析了2021年山东省生猪市场行情,并对生猪产能规模和养殖效益情况进行解析.2021年在生猪产能恢复到正常年份水平的基础上,规模养殖发展水平进一步提升,但在高成本下生猪养殖收益持续走低.同时受生猪产能去化,养殖效益低靡的影响,生猪饲料消费增幅放缓,但生产集中度持续提高.本文对2022年生猪产业发展趋势进行了预判... 相似文献
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2021年国内生猪产能提前半年恢复至正常水平,生猪存栏的恢复带动饲料产量高速增长,国内饲料粮需求大幅增加.为满足消费需求,2021年我国玉米产量和进口量均创历史最高纪录,高粱、大麦、小麦等替代品大量流入饲用领域,弥补了玉米供需缺口,玉米价格自高位回落.2021年国内玉米生产以稳为主,在玉米及高粱、大麦等替代品进口保持高... 相似文献
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2020年是我国生猪产业高速发展的一年,本文总结了国内外生猪产业生产与贸易概况,分析了2020年我国生猪产业发展现状及存在的主要问题,展望了2021年生猪产业发展趋势,并对未来生猪产业发展提出建议。 相似文献
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2021年我国生猪产能持续恢复,2021年年末生猪存栏44922万头,同比增长10.51％;能繁母猪存栏量达到了4329万头,同比增长4.04％,2021年上半年生猪出栏量已经超过2018年同期水平.价格方面,2021年生猪价格较上年下滑明显,生猪月度平均价格为20.78元/kg,同比下降38.58％;猪肉月度平均价格... 相似文献
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2021年是我国生猪产业遭遇最强烈"猪周期"影响的一年,也标志着规模化生猪养殖进入激烈竞争的新时期.本文总结了本年度国内外生猪产业生产与贸易概况,分析了我国生猪产业的发展现状及当前存在的主要问题,展望了2022年生猪产业发展趋势,对未来生猪产业发展提出一些看法和建议. 相似文献
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2020年,在政策和市场拉动下,生猪产能加快恢复,但非洲猪瘟疫情并未完全消除,叠加新冠肺炎疫情影响,全年生猪出栏仍有所下降,生猪价格维持高位震荡,商品猪出栏体重保持较高水平。同时随着促生长类药物饲料添加剂已全部退出,饲料行业产品结构及产品类型也会随之变化。本文主要从生猪营养与饲料领域来综述2020年度生猪产业特点与2021年度发展趋势,并从科学研究与技术集成角度提出相关建议。 相似文献
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本文从生猪产能变化、价格走势、政策引导等方面剖析我国生猪市场变化趋势,并预测未来价格走向。预计最早在2021年3月,最晚在2021年6月,我国生猪存栏量将恢复到正常年份的水平;2021年6月底我国生猪价格或将步入"猪周期"的下行区间,价格有可能跌破25元/kg;2021年下半年生猪价格保持波动下滑态势,但不会出现价格快速下滑现象,在不考虑自然灾害、生猪疫情、政策干预等不可预测因素的情况下生猪价格将在20元/kg上下波动。此外,由于生产成本上升,2021年养猪户收益状况不容乐观,产能的恢复也将导致2021年猪肉进口量大幅减少。 相似文献
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2016年生猪养殖回暖,养猪业迎来春天,养殖效益不断走高.但同时也存在诸多问题,机遇与挑战并存.在国家畜牧业供给侧结构性改革稳步推进下,稳生猪成为畜牧业结构调整的重点之一.本文主要综述了2016年度生猪产业营养与饲料领域特点、2017年度生猪产业营养与饲料领域发展趋势及相关建议. 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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