努力做大做强济宁渔业经济

济宁是山东省淡水渔业大市,渔业在繁荣农村经济、增加农民收入方面有着明显的优势和潜力。全市现有水面16．4万hm2,占国土面积的15．2％,约占全省淡水面积的50％。其中湖泊12．1万hm2、水库0．5万hm2、池塘2．27万hm2、河沟1万hm2、采煤塌陷地水面0．53万     

做活库区渔业致富一方百姓

保靖县库区水面面积有0.32万hm2,其中碗米坡水库在我县境内的水面面积达0.13万hm2。我县水库库湾多,库岸植被丰富,水质肥爽,特别是水体无工业性污染,非常适宜发展网箱养鱼和增殖型渔业。2005年,我县将库区渔业开发作为全县渔业生产上规模、上档次的突破口来抓,一年来,全县水库网箱养鱼发展迅猛,银鱼移植推广取得重大进展。全县网箱养鱼已发展到2200口,其中名优鱼类网箱养殖1050口,产鲜鱼1650t,产值达到1485万元;银鱼移植水面面积达到0.14万hm2,共投放银鱼卵4500万粒,预计到2007年将形成规模产量。据统计,我县共有520户农户专门从事库区渔业…     

湖泊围网蟹鳜混养试验

围网蟹鳜混养面积40 hm2,投放规格200只/kg的人繁长江蟹,放养密度1 500只/hm2,总计6万只;投放5~8cm翘嘴鳜鱼种,放养密度50尾/hm2,总计2 000尾;投放螺蛳2.5万kg,平均放养625 kg/hm2。共捕成蟹3 723 kg、鳜鱼809 kg、青虾1 000 kg、其它经济鱼类1 850 kg,总计重量7 382 kg;渔业总收入223 250元;生产总成本141 300元,总利润81 950元,单位面积利润2 049元/hm2,投入产出比为1∶1.58。     

发展“低碳经济”促进余杭区甲鱼产业可持续发展

<正>余杭区区域总面积1220km2,水域面积1.25万hm2,境内河流纵横、湖荡密布,适合渔业养殖的发展。2009年全区甲鱼养殖面积2.3万亩,产量1.8万吨,产值为7.2亿元,占三大主导品种(甲鱼、黑     

唐山海港经济开发区休闲渔业发展现状及建议

<正>1唐山海港经济开发区休闲渔业现状唐山海港经济开发区,简称唐港区,地处渤海湾中心地带,京津冀协同发展经济圈中。陆地面积432.4km2,海岸线90km,滩涂面积297.6km2,唐港区现有海水养殖面积1 233hm2,各类渔船188条,总功率20 769.5kW,渔业人口2万余人,2014年全区渔业总产值5.82亿元,是唐港区大农业的支柱产业。唐港区的休闲渔业发展起步于2006年,由当地的大型旅游公司组织部分转     

改善水产养殖产品品质的探讨

人类所需食物完全来自生物圈,其中98%来自土地,2%靠水体提供. 我国水产资源较为丰富,全国内陆水域面积约1733万hm2,其中大小河流面积667万多hm2,湖泊面积733万hm2;水库水域面积200万hm2;池塘总面积126万hm2;大陆海岸线长18000 km.     

菏泽市渔业发展概况、存在问题及发展对策

近年来,菏泽市渔业坚持绿色发展理念,大力调整养殖结构、产业结构,大力发展休闲渔业,积极推广水产养殖新技术、新模式,转变经营方式,提高了水产养殖效益,加快了渔业转型升级。1渔业发展概况.菏泽市以黄河故道、黄河滩区和采煤塌陷区为重点,抓好宜渔荒洼资源综合开发,水产养殖面积达到.1.67万hm2(25万亩),建成省级渔业园区11家,发展渔业合作社69家,实现了渔业规模发展;以名优品种特色养殖为重点,积极引进市场价格高、销路好的名优水产品种,累计放养面积达1.33万hm^2(20万亩).     

水库大水面细菌性败血症防治技术

山东省临沂市拥有水库面积达2.2万hm2,水库渔业在整个水产业中占有重要地位,也是库区周围群众收入的主要来源。近几年随着社会发展,水库外源污染物增多,     

临沂市大中型水库生态渔业综合开发技术

山东省临沂市拥有大中型水库36座,小型水库(塘坝)上千座.水库面积2.4万hm2,水库渔业在整个水产业中占有重要地位.2004年～2005年,临沂市渔业技术推广站在有关县(区)渔业部门的协助下,为了探索水库渔业发展的新路子,使水库生产的水产品达到无公害产品要求,使养殖模式做到健康,生态,进而调整水库养殖品种结构,增加库区渔(农)民的收入,结合临沂市百万农户致富工程,在全市1.2万hm2大中型水库组织实施了水库生态渔业综合技术开发,取得了较大的经济和社会效益.     

充分发挥水产技术推广职能,强力支撑唐山渔业健康发展

唐山市位于渤海之滨,海岸线长达196 km,具有得天独厚的资源优势.目前全市拥有海水池塘养殖面积1.3万hm2(20万亩)、淡水池塘养殖面积1.6万hm2、海水工厂化养殖面积50多万m2,水产品年产量达到50多万t,产量、产值均占全省50%以上,唐山渔业在河北渔业中占有举足轻重的地位.目前唐山市渔业生产结构形成了"捕养并举、以养为主;海淡养殖并举、鱼虾蟹贝齐发展"的新格局,养殖产量超过了捕捞产量,占渔业总产量的60%以上,水产养殖在渔业产业发展中的地位日益突出.     

Esophagoscopy and gastroscopy in dogs and cats. Technics and indications

A report is presented of esophagoscopy and gastroscopy in cats and dogs using flexible endoscopes. Following consideration of the basic equipment, an account is given of patient preparation and anesthesia, topography, investigation technique and normal findings. Diagnostic potential, indications and risks involved are discussed.     

虾蟹血淋巴的抽取与固定

随着人们对甲壳动物生理生态学研究的逐步深入,尤其是与免疫应答密切联系的血液生理学领域被广泛关注.抽取和固定血淋巴,成为进行血液学研究必不可少的步骤.那么如何更好地抽取和固定血淋巴呢,本文以虾蟹为例做了总结,以供参考.     

中国鲟鱼的保护、管理与产业化

1　世界现存鲟鱼的种类和资源鲟鱼是一类起源早、具有重要科学研究价值和极高经济价值的稀有物种 ,多数种类个体大 ,半数种为溯河洄游产卵鱼类。按目前较为公认的分类系统 ,现存鲟鱼类有 2科 6属 2 7个种 ,隶属于硬骨鱼纲、软骨硬鳞总目、鲟形目 (Acipenseriformes) ,其中鲟属有 17个种 ,主要经济种类在其中。它们全部分布于北半球 ,现存 9个自然分布区为 :太平洋东岸、北美大湖地区、大西洋西北部、北美密西西比河流域和墨西哥湾、大西洋东北部、里海地区、西伯利亚及北冰洋流域、黑龙江和日本海、长江和珠江。鲟鱼自然种群资源稀少 ,在过…     

Fish assemblage associations and thresholds with existing and projected oil and gas development

Energy development threatens fish and wildlife resources worldwide. This study used constrained ordinations to show fish assemblage structure associated with oil and gas well densities in the Colorado River Basin, Wyoming, but well densities explained only 6.4% of assemblage structure when compared to other factors. Threshold Indicator Taxonomic ANalysis showed significant negative threshold responses by some species to small levels of development (<0.15 wells km^?2), whereas positive thresholds were less distinct. Some native and imperilled species could be disproportionately affected if future oil and gas development proceeds in a manner that will impact aquatic resources. Although existing development has not substantially influenced regional fish assemblage structure, it appears to affect a subset of species. Understanding assemblage‐level responses to development can help land managers determine appropriate development levels, prioritise areas for monitoring associated with future development and identify where land protection measures may be needed to offset potential risks.     

虾蟹专用肥的研究开发及应用

20 0 1年 ,江苏省高邮市农林局与中国水产科学研究院淡水渔业研究中心及扬州市春申生物化工有限公司共同承担了江苏省水产更新工程项目———“虾、蟹专用肥料的开发研究与推广”。经项目组人员的共同努力 ,现已顺利完成项目任务 ,研究开发的虾、蟹专用肥在试用和大面积推广应用中取得了显著效果。虾、蟹专用肥已被列为江苏省第一批无公害水产品基地拟用鱼药、饲料推荐产品 ;也是江苏省水产技术推广站、安徽省水产技术推广站、江苏省高邮市农林局、江苏省兴化市水产局、江苏省宝应县水产局、安徽寿县水产局等十多个水产行政主管和技术推广部…     

Achieving sustainable aquaculture: Historical and current perspectives and future needs and challenges

Important operational changes that have gradually been assimilated and new approaches that are developing as part of the movement toward sustainable intensive aquaculture production systems are presented via historical, current, and future perspectives. Improved environmental and economic sustainability based on increased efficiency of production continues to be realized. As a result, aquaculture continues to reduce its carbon footprint through reduced greenhouse gas emissions. Reduced use of freshwater and land resources per unit of production, improved feed management practices as well as increased knowledge of nutrient requirements, effective feed ingredients and additives, domestication of species, and new farming practices are now being applied or evaluated. Successful expansion into culture of marine species, both off and on shore, offers the potential of substantial increases in sustainable intensive aquaculture production combined with integrative efforts to increase efficiency will principally contribute to satisfying the increasing global demand for protein and food security needs.     

Food habits and growth of silver and bighead carp in cages and ponds

Analysis of intestinal contents of silver carp (Hypophthalmichthys molitrix) and bighead carp (Aristichthys nobilis) showed that silver carp consumed primarily phytoplankton while bighead carp consumed large quantities of zooplankton and detritus in addition to phytoplankton. The size of particles filtered by the bighead carp was larger (17–3,000 μm) than that filtered by silver carp (8–100 μm). Artificial feed was readily consumed by bighead carp but not by silver carp. No growth difference was indicated for silver carp in fertilized ponds and ponds receiving artificial feed. Growth of bighead carp increased substantially with the addition of artificial feed. Silver carp grew more rapidly in cages than bighead carp.     

添加植酸酶日粮不同磷水平和钙磷比对生长肥育猪血液生化指标和骨骼性能的影响

本试验利用饲养试验方法,研究玉米-豆粕型日粮中添加植酸酶时不同磷水平和钙磷比对生长肥育猪血清指标和骨骼性能的影响。试验选用162头20kg左右的杜长大三元杂交猪进行2×3(磷水平×钙磷比)因子饲养试验,试验分2个阶段进行,前期为生长期体重在20-60kg,后期为肥育期体重为为60-100kg。结果表明:添加植酸酶日粮磷水平对血清磷含量和碱性磷酸酶的活性影响显著(P<0.05);钙磷比对血清钙和血清磷含量的影响显著(P<0.05);添加植酸酶日粮磷水平和钙磷比对生长肥育猪骨骼性能的影响不显著(P>0.05)。在添加植酸酶条件下,降低日粮磷水平不影响猪的正常生长发育。