Vallecillos Antonio, María-Dolores Emilio, Villa Javier, Rueda Francisco Miguel, Carrillo José, Ramis Guillermo, Soula Mohamed, Afonso Juan Manuel, Armero Eva
Department of Agronomic Engineering, Technical University of Cartagena, Paseo Alfonso XIII 48, 30202 Cartagena, Spain.
Alevines del Sureste S.L., calle Cabo Cope s/n, Águilas, 30880 Murcia, Spain.
Animals (Basel). 2021 Nov 17;11(11):3285. doi: 10.3390/ani11113285.
Meagre () plays an important role in the aquaculture system, with the potential for diversification of European aquaculture, and is characterized by its fast growth rate, low feed conversion ratio, and the high quality of the product. Focusing on the relevance of meagre, the aim of the study was to analyze growth performance, fish morphology, and flesh composition phenotypically and genetically to be considered as a strategy in a breeding program. For this purpose, 633 fish were raised in two different housing systems, in sea cages or in a continental tank, and when they reached harvest size, manual growth traits, automatic morphology by the image analysis program IMAFISH_ML, and flesh chemical composition (fat, protein, moisture, and collagen percentages) were measured. The fish reared in the cages showed a higher body weight and fillet fat percentage than those in the tank. Heritabilities for growth and morphology traits, and for fillet fat percentage were medium, revealing these traits as a possible selection criterion in a breeding program. Phenotypic and genetic correlations between growth and morphology traits were positive and high. Phenotypic correlations between growth or morphology traits with fillet fat percentage were positive and medium; genetic correlations were not estimated accurately.
军曹鱼在水产养殖系统中发挥着重要作用，具有使欧洲水产养殖多样化的潜力，其特点是生长速度快、饲料转化率低且产品质量高。鉴于军曹鱼的重要性，本研究旨在从表型和基因层面分析其生长性能、鱼体形态和鱼肉成分，以便将其作为育种计划中的一项策略。为此，633尾鱼在两种不同的养殖系统中饲养，分别是海水网箱和陆地养殖池，当鱼达到收获大小时，测量了人工生长性状、通过IMAFISH_ML图像分析程序得出的自动形态数据以及鱼肉化学成分（脂肪、蛋白质、水分和胶原蛋白百分比）。网箱养殖的鱼比养殖池中的鱼体重更高，鱼片脂肪百分比也更高。生长和形态性状以及鱼片脂肪百分比的遗传力中等，表明这些性状可能是育种计划中的选择标准。生长和形态性状之间的表型和遗传相关性呈正且高度相关。生长或形态性状与鱼片脂肪百分比之间的表型相关性呈正且中等；遗传相关性未得到准确估计。
