梁国栋,王辉,刘加慧,杨洪帅,李瑞伟

• 1:广东海洋大学水产学院
• 2:广东省茂名市茂南三高罗非鱼良种基地

摘要(Abstract)：

采用中心复合设计及响应曲面法研究吉富罗非鱼仔鱼开口率与温度和盐度的量化关系,预实验确定温度范围为20~34℃,盐度为2~10,通过模型优化确定初孵仔鱼从出膜到开口这一阶段最适温度和盐度组合。结果表明,温度对仔鱼的开口率(First feeding rate,FFR)的一次效应有统计学意义(P<0.01),盐度对仔鱼开口率的一次效应有统计学意义(P<0.05),温度和盐度的交互作用对开口率的影响不具统计学意义(P>0.05);温度对仔鱼开口率的二次效应有统计学意义(P<0.01);盐度对仔鱼开口率的二次效应有统计学意义(P<0.05);温度对开口率的影响较盐度更重要。建立开口率对温度和盐度的二次多项式回归方程,其决定系数为0.986 1,矫正决定系数为0.972 1,预测决定系数为0.911 2,表明所建模型拟合度极高,且可通过温度和盐度预测罗非鱼仔鱼的开口率。对模型方程优化的结果表明,当温度为29℃、盐度为5时,罗非鱼仔鱼的开口率达到最大值87.97%,可靠性达到0.972。

关键词(KeyWords)： 吉富罗非鱼;开口率;温度;盐度;模型;优化

Abstract:

Keywords:

基金项目(Foundation): 广东省海洋渔业重大科技推广专项(A201009C02);; 广东省科技基础条件建设项目(2011B060400017);; 农业部现代农业产业技术体系专项资金项目(CARS-49)

作者(Author): 梁国栋,王辉,刘加慧,杨洪帅,李瑞伟

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