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彩虹鲷又称红罗非鱼、红吴郭鱼,为尼罗罗非鱼和莫桑比克罗非鱼突变型的杂交良种。彩虹鲷体色鲜红,无黑色腹膜,看起来似红鲷,且肉厚刺少,摄食水中的绿藻而使其肉富含叶绿素,肉味既鲜嫩爽口,又可养颜润肤,是一种观赏食补兼具的热带鱼类。在养殖中,因其体色鲜艳,个体大,生长快,产量高,极适合于农户小规模池塘养殖。要想实现彩虹鲷池塘养殖高产高效,必须把握以下技 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(Oncorhynchus mykiss)是虹鳟的金黄色突变品系.由日本长野县水产试验场选育的品种.形体和虹鳟非常相似,体色为金黄色、体侧有红色的彩带、眼为玫瑰红色;由于肉色为橙红色,可以按卫生标准加工生鱼片,受消费者欢迎.是一个观赏和食用皆优的品种. 相似文献
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虹鳟鱼隶属鲑形目、鲑科,鲑属,原产于美国加尼福尼亚的山区溪流中,是当今世界上养殖地域分布最广泛的冷水性鱼类。其肉质鲜嫩、味美、无腥味、高蛋白低胆固醇,含有丰富的氨基酸、不饱和脂肪酸,营养价值高,深受市场的青睐。 相似文献
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P.J. Landless 《Aquaculture (Amsterdam, Netherlands)》1976,7(1):11-25
Rainbow trout learned quickly to operate a trigger to deliver dry food and showed a peak of feeding at dusk, but also appreciable nocturnal feeding. Food deliveries were aggregated into feeding bouts with a preferred time between trigger presses of 4–8 min; the aggregation of feeds was more marked in groups of trout than with trout held singly. Total daily food intake varied with the reward level per trigger press, and could therefore be controlled at about the manufacturers recommended feeding levels. Territorial and hierarchical behaviour were observed and in groups of up to 20 trout only one member of the group pressed the trigger although all the fish took the food delivered, and there was no evidence that smaller fish in a group were deprived of food to the point at which they lost condition. 相似文献
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Growth rates of Atlantic salmon, pink salmon, Arctic char, sea trout and rainbow trout were compared under Norwegian farming conditions. During the juvenile, freshwater period, growth was fastest in pink salmon, followed by rainbow trout and Arctic char. Freshwater growth of sea trout and, especially, Atlantic salmon, was slow. After transfer of smolts or fingerling to sea water, Arctic char failed to survive the autumn. Sea water growth of sea trout was slow, but the three species, rainbow trout, Atlantic salmon and pink salmon, all grew rapidly through all seasons. When in sea water, rainbow trout and pink salmon were regularly attacked by vibriosis, while Atlantic salmon were rarely attacked, and sea trout never. It is concluded that, for commercial farming in Norway, rainbow trout are of value for production of fish of any size up to 3–4 kg, and pink salmon for production of small fish of 0.5–1.5 kg. Atlantic salmon is the only species suitable for production of a very large salmonid, i.e., more than 4–5 kg. 相似文献