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一、材料与方法１．鱼卵的来源２００１年２月１６日，大西洋鲑发眼卵由美国缅因州格兰特湖渔场在１５时到达北京机场，到北京房山区中国水产科学研究院鲟鱼繁育技术工程中心是２２时。达到发眼卵的积温是３１２℃，产卵水温是１０℃，鱼卵经吸水膨胀直径达５．３～５．６毫米
First, materials and methods 1. Source of roe On February 16, 2001, Atlantic salmon eye eggs arrived at Beijing Airport from Grant Lake, Maine, USA, at 15 o’clock in the afternoon. The sturgeon breeding technology engineering center of Chinese Academy of Fishery Sciences in Fangshan District, Beijing was 22 o’clock. The accumulated temperature of the eyed eggs is 312 ° C., the temperature of the spawning eggs is 10 ° C., and the diameter of the oyster swelled to 5.3-5.6 mm