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浙江省是一个渔业生产和水产品贸易大省,2002年,全省水产品总产量达到480.68万吨.其中养殖产量156.5万吨:渔业总产值334亿元,占大农业产值29.4%:水产品出口近24.72万吨,创汇近7.9亿美元。 相似文献
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切实发展设施渔业促进水产养殖科技进步 总被引:1,自引:0,他引:1
前言 中国渔业之所以能发展如此之快,水产品总产量从1978年的465万t到2000年的4278.99万t,除改革开放和确定了正确的渔业发展策略及政策外,一个重要的因素就是科技进步对渔业发展起了重要的作用。渔业科技进步对水产品总产值贡献率“七五”期间为42%,“八五”期间为 相似文献
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中国水产养殖业的现状及展望 总被引:3,自引:0,他引:3
改革开放以来,中国的水产业取得了举世瞩目的成就,2001年中国的水产品总产量达到4382万t,连续12年居世界首位,渔业总产值2928亿元,占中国农业总产值的比重由1978年不足2%上升到12%以上,水产业在我国的国民经济,特别是农业经济发展中占有越来越重要的地位。 相似文献
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近年来,巴彦淖尔市各级水产职能部门全面落实"中央一号"文件精神和各项强渔惠渔政策,抢抓机遇助推全市渔业养殖再上新台阶,保障巴彦淖尔市渔业经济稳健快速发展。据统计,2012年巴彦淖尔市水产品总产量达到1.9万吨,同比增长7%;渔民年人均纯收入达10600元,增幅达9%;全年渔业经济总产值达2.5亿元,同比增长9%。其中,养殖产量达到1.5万吨,产值1.727亿元,分别占水产品总产量和总产值的79%和69%,这些成绩的取得对巴彦淖尔市渔业整体发展具有举足轻重的作用。在新的发展起点上,如何进一步加快巴彦淖尔市水 相似文献
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《中国畜牧杂志》1986,(3)
<正> 1986年2月28日国家统计局发表的关于1985年国民经济和社会发展统计公报表明,我国畜牧业和渔业获得全面丰收。由于农村产业结构继续有所调整,使其更加趋于合理。1985年农业总产值比1984年增长3%,而牧业产值比1984年增长15.6%,渔业产值增长17.2%,牧业产值占农业总产值的比重由1984年的18.3%上升到21.7%,渔业产值由上年的2.6%上升到3.5% 1985年我国猪、牛、羊肉产量达到1755万吨,比上年增长13.9%,每人平均由上年的14.9公斤增加到16.77公斤。在肉类中占90%以上的猪肉产量达到1650万吨,比上年增长14.2%,牛羊肉产量100多万吨,增长10.3%。牛奶产奶达250万吨,人均牛奶产量达到2.4公斤,比1980年的1.2公斤增长1倍。鲜蛋产量达500多万吨,比1984增加100万吨,增长23.1%,人均鲜蛋产量达到5.2公斤,比1982年增长84%。 相似文献
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1发展现状
1.1渔业经济稳步增长
2011年蒙城县水产养殖面积43400亩,水产品总产量10850吨,较2005年增长14.94%,渔业总产值16105万元,占大农业的比例较2005年增长121.5%,其中鱼类11450万元,甲壳类3911万元,贝类1万元,其他类水产品743万元。渔业中间消耗产值6627万元。国有主河道及宁洛高速公路两侧的池塘和许疃煤矿塌陷区的养殖格局基本形成。 相似文献
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《中国畜牧兽医文摘》2015,(11)
<正>分析定西渔业发展的历史和现状,了解定西渔业发展的优势,确定定西渔业的发展方向应该调整为"举生态保护之旗、走休闲产业之路",才能确保持续健康发展。1定西渔业闪亮的历史定西渔业历史悠久,开始于1958年,发展于1985至1993年和2005年至今两个阶段,2010年前后为发展的鼎盛期,养殖面积达到400hm2,水产品总产量达到1600t,建成6个国家级水产健康养殖示范场,3个国家级休闲渔业示范基地,6个无公害水产养殖基 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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以国际标准强毒R株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离MG,并收集感染鸡所产蛋分离MG。结果表明,人工感染48小时后上、下呼吸道及肺已被全面感染,96小时气囊已被感染,120小时输卵管已能分离到MG,卵巢始终分离不到MG。人工感染鸡自144小时便能在其所产蛋中分离出MG。药物治疗能在72小时内消除感染,油乳剂苗则需24天后逐渐降低蛋内MG分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内MG,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献