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1.
海水网箱养鱼湿颗粒配合饲料优势刍议 总被引：1，自引：0，他引：1
一、我国海水网箱养鱼现状我国是海水养殖大国，目前全国海水网箱养鱼规模在60万箱左右，主要分布在福建、广东、浙江、山东沿海。海水网箱养鱼绝大多数集中在内湾浅海养殖，随着养殖技术的日渐成熟和养殖种类的增多，内海海水的污染和鱼病的多发，国内一些水产科技园区从欧洲引进深水网箱进行外海养殖，已取得阶段性成果。海水网箱养殖的蓬勃发展与目前传统饲料投喂方式已形成矛盾，现在全国南北方海水网箱养鱼所用饲料绝大多数还是冰鲜杂鱼，鲜杂鱼资源有限，饲料转化率低，冰鲜杂鱼易氧化，质量不稳定，生鱼肉中往往含有硫胺素酶，破坏鱼… 相似文献
2.
我国的海水网箱养鱼技术 总被引：2，自引：0，他引：2
一、我国海水网箱养鱼的历史及现状 我国的海水网箱养鱼始于70年代末,广东省惠阳县、珠海市首先开展了海水网箱养鱼试验,放养了石斑鱼、鯛科鱼类、尖吻鲈等20多个种类,并获得成功。1981年以后转入生产性养殖,商品鱼主要销往港、澳地区,取得了显著的经济效益。1984年在广东省的沿海地区迅速发展,随后在福建的平潭和浙 相似文献
3.
近年来,广东省一项新崛起的海水养殖事业——海水网箱养鱼,正在全省沿海各地积极发展起来。目前,全省沿海地区已发展海水网箱养鱼数量达到2万 相似文献
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5.
浮筏式网箱养殖海水鱼类是当今发展浅海养殖业的重要课题之一,已引起世界普遍的重视。日本1965年获到真鲷人工孵化试验成功后,并以天然苗和人工苗进行网箱养殖。1973年马来西亚引进日本技术进行网箱养殖石斑鱼。近年来英国、美国、新加坡和我国的台湾、港澳、广东、福建等地先后都进行网箱养鱼,迄今已发展至2万多个,鱼类养殖品种也在不断增加。已成为我国海水养殖中的新型产业。 相似文献
6.
关于当前我国北方沿海工厂化养鱼的一些问题和建设 总被引：11，自引：1，他引：11
20世纪末，我国沿海出现了海水养殖第四次浪潮的好形势，南方的网箱养鱼和北方的工厂养鱼共同构成海水养鱼的新产业，作者观察和分析当前北方沿海工厂化养鱼易问题的问题，谈一些看法和建议，以飨有关读者。 相似文献
7.
我国海水网箱技术的发展与展望 总被引：6，自引：2，他引：6
我国海水网箱技术的研究与开发起始于1970年代，并在过去的20多年里得到了迅速发展。迄今为止，我国各种类型的海水养殖网箱总数已超过100万个，其中大型深水抗风浪网箱有3000多个。海水网箱养殖的鱼类有30多种，年产量约30万吨。海水网箱养殖已发展成为我国海水养殖的支柱产业之一。 相似文献
8.
南麂海区深水网箱适养鱼种初步筛选 总被引：1，自引：0，他引：1
深水网箱作为一种新型的海水鱼类养殖设施，已在我国沿海渔区逐步推广。然而，各地的产业化实践表明，如何找到若干种既能适合当地海区养殖，又能适销的深水网箱养殖鱼类品种，已成为决定深水网箱养殖成败的关键之一。挪威经过10年多的探索研究，终于成功实现大西洋鲑(三文鱼)的网箱养殖，取得了巨大的商业利润。为此，我们专门在南麂海区开展了深水网箱适养鱼种筛选试验，从分析养殖水域的生态环境特点着 相似文献
9.
近年来,国外广泛开展网箱养鱼方面的研究,已迅速发展为养鱼业的一个崭新的分支。网箱养鱼无论在海水养殖,还是在淡水养殖中,都具有重要意义。 相似文献
10.
<正> 浙江省舟山市水产研究所经过3年艰苦努力,试验成功海水网箱养鱼,并于今年1月初通过了省科委的省级鉴定.专家们认为,舟山海水网箱养鱼试验成功,为沿海各地充分利用港湾发展海水养殖开辟了一条新路.海水网箱养鱼是一项海水养殖新技术.舟山市水产研究所从 相似文献
11.
鱼类网箱养殖对水环境的影响 总被引：5，自引：0，他引：5
随着我国鱼类网箱养殖业的发展，网箱养鱼的规模和密度越来越大。由于投喂饵料的利用率较低．未被利用饵料的沉积、漂移、降解以及养殖鱼类的代谢产物对养殖水域的环境产生了巨大的压力。本文就鱼类网箱养殖对水环境的污染问题作一简要概述。 相似文献
12.
Paiboon Bunlipatanon Narin Songseechan Hassanai Kongkeo Nigel W Abery Sena S De Silva 《Aquaculture Research》2014,45(3):373-388
Trash fish/low valued fish is still the most commonly used feed in marine cage culture in Asia. Use of trash fish is controversial with regard to the sustainability of the farming practices, and related issues on environmental degradation. In this study, the results of farm based trials on Asian seabass (Lates calcarifer) and tiger grouper (Epinephelus fuscoguttatus) to evaluate the efficacies of the use of commercial pellet feed in comparison to trash fish/low valued fish in marine cages in Thailand are presented. In spite of the variations observed in each of the farm sites, the results indicate that the overall growth performances and fish survival rates between the two feed types were similar, for both species. However, better cost‐benefit and resource use were recorded for fish reared on trash fish/low valued fish. No significant differences were observed in water quality parameters, dissolved oxygen, transparency and ammonia, between sites where pellet or trash fish were used, inside and outside the cages and for both species. The results of the present study are discussed in the light of the current controversies on the use of trash fish/low valued fish in marine cage culture. 相似文献
13.
Jaime Rábago‐Castro Jesús Genaro Sánchez‐Martínez Jorge Loredo‐Osti Ricardo Gomez‐Flores Patricia Tamez‐Guerra Carlos Ramírez‐Pfeiffer 《Journal of the World Aquaculture Society》2011,42(3):406-411
Studies in cage‐cultured fish have reported spatial and temporal variations on parasite prevalence; however, most of these studies have been carried out in cold water and marine environments. Channel catfish, Ictalurus punctatus, is the main floating cages‐raised species used in intensive fish culture in Tamaulipas. In Mexico, there are no seasonal reports on fish parasites in this type of cage system. The aim of the present study was to determine the prevalence and mean intensity of ectoparasites of cage‐cultured channel catfish in a year. Fish were sampled bimonthly from six locations in Tamaulipas and measured and evaluated for ectoparasites. Results showed the presence of two gill‐dwelling metazoans, Ligictaluridus floridanus and Ergasilus cerastes and one skin‐dwelling protozoan, Trichodina sp.; a pattern characterized by peaks in prevalence in early autumn for L. floridanus and late autumn for E. cerastes was observed. In addition, geographic location had a significant effect on the prevalence of L. floridanus and E. cerastes. It was also observed that presence of these parasites was not associated with any fish mortality. To our knowledge, this is the first seasonal study on ectoparasite prevalence on channel catfish reared in cages in México. 相似文献
14.
深远海网箱养殖是一种新型水产养殖模式,具有技术先进、环境友好和成鱼品质高等优点,因此,它对推进水产养殖绿色发展战略意义重大。本文在介绍中国普通网箱和深水网箱、国外深远海网箱发展简况的基础上,重点概述2017年前后中国深远海网箱发展现状及其研究进展,并对今后的发展方向加以展望。2017年前,我国深远海网箱处于起步阶段,开发了特力夫~(TM)超大型深海养殖网箱等近10种深远海网箱。2017年后,我国深远海网箱进入快速发展期,开发应用了"深蓝1号"全潜式深海渔场等一系列深远海网箱,引领了深远海网箱的现代化建设。迄今为止,我国主要开展了深远海网箱的定义、专利、结构、绳网材料及其配套智能装备等研究,部分成果已得到应用。为适应水产养殖绿色发展要求,今后我国深远海网箱将朝着离岸化、大型化和智能化等方向发展。虽然我国深远海网箱养殖业取得了长足进展,但与挪威等国外先进技术相比,我们还存在巨大的差距。我国深远海网箱养殖业前景广阔,但相关工作任重道远。 相似文献
15.
Fish catches in Lake Victoria have been on the decline while demand for fish has been increasing. Cage culture with >3,000 cages, over 3 million tilapias and valued at US$ 12 million is trying to fill the gap. This study reviews the development of cages and the need to develop a decision support tool for effective management. Existing literature and data on fisheries and cage culture held by the Kenya Marine and Fisheries Research Institute (KMFRI) were used in the analysis. Cage culture is a promising venture that may increase productivity, offer employment and enhance economic well‐being. However, site suitability for the installation of cages is poorly regulated with most developments (>45%) located within 200 m of the shoreline that are breeding grounds of fish and conflict with other lake users. Waste feed increases eutrophication, and enhances growth of algae and water hyacinth in the lake. Recent isolated fish kills were attributed to low dissolved oxygen concentrations (<0.64 mg/L), and an increasing occurrence of fish disease are signs of poor management practices among cage farmers. Cage culture may turn into an environmental disaster if not managed well, and there is need for robust policies and increased awareness to reduce environmental impacts. 相似文献
16.
本文叙述了宁波市海水网箱养殖的现状，网箱分布较集中，网箱养殖密度不断加大，病害发生频繁，养殖尚缺乏统一规范的管理；提出了该市海水网箱养殖实现可持续发展需采取的措施，政府需加强对养殖的统一规范和管理，对养殖者进行定期培训和教育，养殖者必须以管理为中心，对疾病以预防为主，防治结合，加强环境保护和生态养殖观念，实现网箱养殖的可持续发展。 相似文献
17.
HU BAO-TONG 《Aquaculture Research》1994,25(3):305-310
Abstract. This paper is divided into four parts. First, history: cage culture has long been practised. The origin of cage culture world-wide should be regarded as the middle reaches of the Yangtze River, China, in the Sung Dynasty. Second, characteristics of cage culture in China. Third, influence: development of open-water fisheries is actively promoted in lakes, reservoirs and rivers. More kinds of water bodies have been employed for this purpose. Marine cages have also rapidly developed. Finally, discussion and conclusions. Cage culture is a modern development of aquaculture which has changed the long-established, fish-farming structures and, to a great extent, pushed forward fisheries development in China. Cage culture is typically characterized by intensive farming, running-water culture, high yield and great efficiency. It is generally accepted that cage culture will actively play an increasingly important role in international aquaculture. 相似文献
18.
深海网箱作为现代海洋渔业拓展外海养殖空间的重要养殖装备，其布设环境一般较近海更为复杂恶劣，对于保障其安全性和稳定性提出了更高的要求。本研究针对一种单点系泊潜浮式船型桁架网箱开展了模型比尺为1︰40的波浪流水池试验，重点围绕该网箱在不同吃水深度受波浪作用的系泊受力、升沉、纵摇和横摇等水动力学特性进行了比较分析。试验结果显示，波高为7.5~12.5 cm时(原型3~5 m)，网箱漂浮状态即可以满足养殖需求，其系泊力及运动响应均较小，具备较高的安全性和稳定性；恶劣海况时，即本试验中波高为15.0和17.5 cm (原型6 m和7 m)，通过整体下潜的方式网箱具有良好的避浪性能，其中，系泊力减幅达70%以上，升沉、纵摇和横摇等运动分量减幅也达20%~60%；波流试验中，海流对网箱避浪性能存在一定的影响，但总体上仍然具有较好的避浪效果。研究结果可为单点系泊潜浮式深海网箱的安全运行与日常管理提供理论依据和数据参考。 相似文献
19.
Rafael D. Guerrero 《Aquaculture (Amsterdam, Netherlands)》1982,27(3):313-315
The Philippines has vast freshwater resources for cage culture of fish. Two tilapia species, Tilapia mossambica and Tilapia nilotica, are cultured commercially in cages in several lakes.Field testing for cage culture of Tilapia nilotica, the preferred species, is described. A pilot commerical cage farm has been established.The major problems affecting development are the short supply of quality fingerlings, the lack of a standard commercial feed, and the increasing costs of cage construction. Recommendations for resolving these problems are given. 相似文献
20.
《Aquaculture (Amsterdam, Netherlands)》2005,243(1-4):121-132
The welfare of fish is receiving increasing attention and attempts have been made to control welfare in farmed fish through regulation of management practices, including stocking density. However, there is little published information on the influence of stocking density on welfare of fish in marine cages. This present study examined welfare in Atlantic salmon (Salmo salar) in cages on a commercial marine farm, exposed to densities ranging from 9.7 to 34 kg m−3. On three occasions over a period of 10 months, fish were sampled from each cage, weighed and measured; their fin condition assessed and blood samples taken for measurement of glucose and cortisol. A multivariate analysis was used to combine four commonly used measures of fish welfare (condition of body and fins and plasma concentrations of glucose and cortisol) into a single welfare score. As well as objectively reflecting a coherence within the data, this score was consistent with the evaluation of welfare by experienced farmers. A generalized linear model indicated that the median welfare score for each cage was significantly related to sampling period, to stocking density (mean over the previous 3 months) and to location of the cage. A model with all the data from individual fish proved to be more robust and also identified sample period, stocking density (mean over 3 months) and position of the cage as significant predictors of the welfare score. There was no significant association between the welfare score and the length of time since grading or lice treatment. Further analysis of the relationship between stocking density and the welfare score suggested that there was no trend up to an inflection point ca. 22 kg m−3, after which increasing stocking density was associated with lower welfare scores. This study suggests that, while stocking density can influence the welfare of Atlantic salmon in production cages, this is only one influence on their welfare and on its own cannot be used to accurately predict or to control welfare. 相似文献