In recent years, aquaculture of the African catfish Clarias gariepinus (Burchell 1882) has experienced rapid growth in Africa, Asia and Europe. In order to improve its rearing systems, it is imperative to determine the individual growth patterns of the species. Individual fish growth is relevant when evaluating commercial viability, planning the time of harvest or projecting profits. In this study, we analysed the growth data of African catfish juveniles reared in an indoor freshwater recirculation aquaculture system and fed five different commercial aquafeeds over a period of 111 days. We fitted five nonlinear growth models—von Bertalanffy, Gompertz, Brody, Richards and logistic—to the weight data and applied the Akaike information criterion, the sum of squares and the maximum likelihood to determine the model that best describes the growth data of the species under the controlled culture conditions. According to the goodness-of-fit criteria, the Gompertz model was consistently the one that best described the growth of African catfish. The F-test showed significant differences (p = 0.05) for one of the experimental feeds (T_1,2) that produced the superior growth in terms of rate and biomass.

中文翻译：

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确定养殖的非洲鲶鱼 Clarias gariepinus 的预测生长模型（Burchell，1882 年）

近年来，非洲鲶鱼Clarias gariepinus的养殖  （Burchell 1882）在非洲、亚洲和欧洲经历了快速增长。为了改善其饲养系统，必须确定该物种的个体生长模式。在评估商业可行性、计划收获时间或预测利润时，个体鱼的生长是相关的。在这项研究中，我们分析了在室内淡水再循环水产养殖系统中饲养的非洲鲶鱼幼鱼的生长数据，并在 111 天的时间内喂养了五种不同的商业水产饲料。我们将五个非线性生长模型——von Bertalanffy、Gompertz、Brody、Richards 和 Logistic——拟合到重量数据，并应用 Akaike 信息标准、平方和和最大似然来确定最能描述物种生长数据的模型在受控的培养条件下。根据拟合优度标准，Gompertz 模型始终是最能描述非洲鲶鱼生长的模型。这F检验显示出在速率和生物量方面产生优异生长 的实验饲料之一 ( T _1,2 ) 的显着差异 ( p = 0.05) 。