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金鳟(OncorhynchusMykiss)属鲑科鱼,大麻哈鱼属,是日本科技工作者从虹鳟的突变种选育出的金黄色品系。其全身呈金黄、橙黄或桔黄色,从背部向腹部颜色逐渐变浅,腹部呈白色,眼呈淡玫瑰红色,是兼具观赏、游钓、美食于一体的优良品种。1996年黑龙江水产研究所王昭明研究员从日本引进我国后根据其体色特征取中国名为“金鳟”。金鳟引进后以其特有优势得到了迅速推广,已成为我国养鳟业继虹鳟后第二个重要家养品种。现将其成鱼池塘养殖技术介绍给广大养鳟户作为参考。一、金鳟的生物学基础知识金鳟具有冷水性鱼类的生物学特征。正常… 相似文献
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2001年3月由美国缅因州引进美国金鳟(Oncorhynchus mykiss Walbaum)发眼卵10万粒。孵化水温为2~8℃,流水中进行,孵出仔鱼在3~17℃水温条件下进行人工养殖,培育出3龄鱼,对其生长发育、摄食、形态、生物学以及养殖环境等因素进行了初步的观察和研究。 相似文献
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金鳟,是日本从虹鳟的突变种选育出的金黄色品系,1996年引进我国后根据其体色特征命名为“金鳟”。金鳟属冷水性鱼类,正常生长上限水温为22℃,接近0℃的水温仍能少量摄食,正常生存。其肉味鲜美,营养丰富,刺少肉多,食用价值高。金鳟既能在池塘中养殖,也能在水库、湖泊、河川中放养,池塘流水养殖一年四季均可生长,每667米2产量可达1万~2万千克,经济效益极高。现将金鳟池塘流水高效养殖技术介绍如下。1池塘建设山涧溪流、泉水、地下水、水库底排水等,均可作为金鳟池塘流水养殖的供水水源。这类水源水温冬季在0℃以上,夏季在22℃以上,水体溶氧在… 相似文献
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我国目前人工养殖的金鳟是黑龙江水产研究所于1996年末从日本引进的发眼卵繁育的后代,经过了五年的饲育,金鳟以其特有的生长和市场优势而得到较迅速的推广。为使有意养殖金鳟的读者能尽快熟悉和掌握苗种培育技术,本文将金鳟的人工繁殖和稚鱼培育技术要点叙述如下。一、饲养环境条件金鳟对生存环境的要求同虹鳟鱼类似。生长水温在6~20℃,最佳生长水温在14~18℃,低于6℃或高于20℃鱼摄食受到影响。饲养水质要求清澈、洁净无污染,溶解氧要在6毫克/升以上,pH6.5~7,总硬度8~12德国度。饲养池规格:稚鱼池3… 相似文献
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虹鳟是典型的冷水性鱼类,2005年北京市对口支援湖北省巴东县虹鳟鱼养殖项目,当年5月引进鱼苗1.5万尾后放入引水水渠中饲养,之后在水渠下方建新鱼池,并将鱼苗转入新池 相似文献
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2006年,房山区水产技术推广站在实施“水产科技入户工程”的过程中精心组织、深入服务,确保了水产科技入户工作的顺利完成,特别是技术指导员根据实际情况向有条件的虹鳟养殖示范户重点推广了虹鳟健康养殖技术,积累了丰富的经验,同时取得了较高的经济效益和社会效益,全区推广应用面积达到100亩,虹鳟产量80万公斤,产值1600万元,利润480万元,比2005年产量提高了13%,利润提高20%,病害发生率降低15%,通过虹鳟健康养殖技术的推广,示范户的科技应用能力得到了普遍增强,水产品质量安全意识得到了显著提高。 相似文献
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金鳟是日本从虹鳟体色突变种中选育出的金黄色品系,1996年引进我国后根据其体色特征所命名,其生物学特性以及生长速度、单位面积产量等与三倍体 相似文献
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电子芯片标记植入对一龄虹鳟(Oncorhyncus mykiss)生长与存活的影响 总被引:2,自引:0,他引:2
本研究主要对标记枪注射法植入电子标记的水温条件与鱼种规格进行了分析与评估。本文通过对大、小两种规格的虹鳟,在不同水温条件下电子标记过程中生长和存活情况进行了评估,以期获得利用该方法植入电子标记的最佳时机。研究结果表明:12℃水温条件下,大规格鱼种在生长、成活率上与对照组均无显著差别;小规格鱼种在成活率上与对照组差异显著。7℃水温条件下,大规格和小规格鱼种在成活率上与对照组均差异显著。水温12℃,体重50g,体长16cm以上的虹鳟是电子标记最佳的植入时机。 相似文献
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Nancy M. Carneiro Carmen D. Eilertson Dr. Mark A. Sheridan 《Fish physiology and biochemistry》1996,15(5):447-452
Previous work has shown that somatostatins (SS) affect teleost lipid metabolism indirectly by inhibition of insulin (INS) and directly by stimulation of hepatic lipolysis. In the present study, rainbow trout (Oncorhynchus mykiss) were used to characterize further the lipid-SS relationship by evaluating how lipid, contributes to SS secretion bothin vivo andin vitro. In vivo hyperlipidemia was induced for up to 3 h by short-term (2 min) infusion of a triacylglycerol (TG)-rich lipid emulsion (20% Intralipid®). Plasma total lipid concentration increased 118 and 155% over control levels 1 h and 3 h, respectively, after infusion; much of this increase was due to elevated plasma fatty acids (FA), which increased 39 and 520%, respectively, over the same time-frame. The hyperlipidemic pattern was attended by a significant increase in the plasma concentration of SS. The specific effects of fatty acids were evaluated on isolated Brockmann bodies. Palmitic acid and oleic acid stimulated SS release 378 and 82%, respectively, over baseline levels. These results indicate that lipids, and in particular fatty acids, modulate SS secretion in rainbow trout. 相似文献
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L. W. Farrington C. M. Austin C. P. Burridge G. J. Gooley B. A. Ingram & B. Talbot 《Fisheries Management and Ecology》2004,11(2):97-106
Rainbow trout, Oncorhynchus mykiss (Walbaum), were first introduced into Australia over 100 years ago, and forms the basis of important recreational inland fisheries and an aquaculture industry in south‐eastern Australia. This paper investigates the genetic variation within and between samples of Australian rainbow trout using allozyme electrophoresis. The levels of genetic diversity within Australia do not show marked differences from those observed in hatchery and wild populations from throughout North America, New Zealand and South Africa, but there is evidence for the loss of some rare alleles during translocation from California to Australia via New Zealand. No appreciable difference in genetic diversity was apparent between hatchery and self‐sustaining wild populations of rainbow trout from mainland Australia. However, significant differences in allelic frequencies were observed, with consistent genetic differences between Victorian and New South Wales samples most likely reflecting state‐based hatchery and stocking policies. 相似文献
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Edwardsiella tarda was isolated from naturally infected rainbow trout (Oncorhynchus mykiss) in raceway culture on a commercial fish farm where the fish were kept at a density of 110 kg m?3 and at a water temperature of 14°C and with a photoperiod of 13 h light:11 h dark. The clinical signs of diseased fish (150 ± 20 mm standard length) were anorexia and lethargy. The most striking lesions in the fish were in the liver. There were hyperaemia and haemorrhages; on histopathological examination, the liver displayed inflammatory infiltrate in portal area, focal necrosis, dilatation of blood sinus and activation of sinusoidal cells. Infection experiments, performed 2 years after isolation of the original culture of E. tarda, were carried out under laboratory conditions at water temperatures of 15, 18 or 24°C. All experimental fish (common carp, Prussian carp, tench), intraperitoneally injected with 8 × 106 cells, demonstrated a total resistance to E. tarda. 相似文献