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日本发明了一种回收鱼、贝类体中水溶性蛋白质的方法。这种方法先把糠虾、鳀鱼、鲭等鱼、贝类放在热油中脱水,再用正己烷等溶剂脱油,然后放在温水或水中,使鱼、贝类体中的水溶性蛋白质溶解,再用真空快速冷冻干燥处理法脱水。 相似文献
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1934年巴西学者Von Ihering等用鱼脑垂体提取液注射到性腺成熟的亲鱼体内,得到排出的精卵,奠定了经济鱼类人工产卵的基础。随后,二十余年中,苏联、印度、日本及南美、南亚各国相继用鱼脑垂体提取液注射鲟鱼、乳鱼、斑鳟、鲑鱼等经济鱼类,获得人工催产成功。1958年,我国南海水产研究所、上海实验生物研究所、浙江淡水水产研究所等单位,用鱼脑垂体提取液(PG)和绒毛膜促性腺激素(HCG),催产草鱼、鲢、 相似文献
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目前上海地区的海洋渔轮鱼货保鲜均用冰鲜,如“5”字头渔轮夏季装冰50—70吨,冬天装冰30~50吨,平均每年用冰约1200吨。在鱼讯季节平均捕鱼2500—3500箱。出海时,随船带鱼箱约600只,先用冰垫底,然后放鱼箱,在鱼箱内亦放碎冰。全部鱼箱堆放于鱼舱内。捕到花色鱼和大鱼装箱用冰覆盖,使鱼处于碎冰包围中,散装鱼则放在鱼箱上,其四周一层冰一层鱼。 相似文献
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自家鱼人工繁殖获得成功以来,我国淡水养殖业的发展速度很快。但随之而来的是鱼苗需要量逐年增加,同时出现了催产用的鱼脑垂体和绒毛膜促性腺激素(HCG)供不应求及注射HCG后的副作用问题。在此基础上,我们研制成一种高效鱼用催产剂LRH—A,并在草鱼、鲂鱼等催产上获得成功,但对鲢、鳙鱼的催产效果很不理想。 相似文献
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稻、鱼、果高效生态工程模式一种是建设规范化的鱼凼、鱼沟工程,实施稻、鱼、果、菜、萍优化组合、立体开发,实现稻田公顷年创利润比单种水稻提高5-8倍;第二种是选择水源条件好、粮食自给有余的地区,实行田改地、休稻养鱼,每公顷年盈利年盈利比种稻高4-8倍;第三种是丘陵、干旱地区,变稻田为鱼、果高效池、园,实现年公顷盈利6万元以上。 相似文献
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The nature of the animal taxa that are the most probable candidates for an intensive, commercial aquatic animal husbandry industry is considered. A characterization is presented of those biological criteria that lend the species the necessary physiological and genetic malleability to be adapted and molded into a domesticated race. The animal cultivated must be amenable to intensive management in high-density confinements such as those now being engineered for high-yield aquaculture. Atributes considered are discussed in the context of the various aquacultural ecosystems in which the specific biotype is expected to achieve satisfactory growth and survival. Correlative with bionomic criteria, economic requirements are posed and evaluated in an effort to define a socially and financially profitable agribusiness system. Investment requirements and operating costs are considered in terms of expected returns. However, since production alone is insufficient to sustain an enterprise — i.e. the product must be sold — production costs must be judged against market values. Therefore, ultimate use or consumer acceptance criteria are incorporated into the list of essential requirements for a candidate species for aquafarming. 相似文献
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The pH change in 40 ml of buffer caused by 20 g dry soil may be multiplied by 5600 to provide the lime requirement of mud in a fish pond. The buffer contains 10 g p-nitrophenol, 7.5 g boric acid, 37 g potassium chloride, and 5.25 g potassium hydroxide dissolved and diluted to 1000 ml with distilled water; the buffer pH is adjusted to 8.00. 相似文献
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海上安全生产工作事关重大,安全生产必须警钟长呜,常抓不懈,本文结合本职工作实际,在认真总结加强海上安全工作经验的基础上,分析现状,针对存在的问题,提出如何建立海洋安全生产长效机制的意见,供上级领导参考。 相似文献
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Remedies for pseudoreplication 总被引:1,自引:0,他引:1
Pseudoreplication is the failure of a statistical analysis to properly incorporate the true structure of randomness present in the data. It has been well documented and studied in the ecological literature but has received little attention in the fisheries literature. Avoiding pseudoreplication in analyses of fisheries data can be difficult due to the complexity of the statistical procedures required. However, recent developments in statistical methodology are decreasing the extent to which pseudoreplication has to be tolerated. Seven examples are given here, beginning with simple design-based remedies and progressing to more challenging examples including the model-based remedies of mixed-effects modelling, generalized linear mixed models, state-space models, and geostatistics. 相似文献
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