Gou Donghui, Wang Yilin, Wang Xinan, Sun Zhibin, Ma Aijun
State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
China-ASEAN Belt and Road Joint Laboratory on Mariculture Technology (Qingdao), Qingdao 266071, China.
Animals (Basel). 2025 Aug 19;15(16):2424. doi: 10.3390/ani15162424.
Genetic improvement, including improving the growth rate, survival rate and feed efficiency ratio (FER), can maximize the production efficiency of turbot. Genetic evaluations of the growth rate, survival rate and FER are required for determining the practicability of including these three traits in a breeding programme. In this study, 20 full-sib families were produced. A method involving a small sample was used to calculate the growth rate, survival rate and FER to represent the corresponding data of an individual. Then, the genetic parameters of the three economic traits were evaluated. The heritabilities for the survival rate, growth rate and FER in turbot were 0.109001, 0.232335 and 0.101866, respectively. The heritabilities of the survival rate and FER were low, while that of the growth rate was moderate. The phenotypic correlations between the survival rate and growth rate, the survival rate and FER, and the survival rate and FER were 0.0919, 0.4609 and 0.2472, respectively. The genetic correlations between the growth rate and survival rate, the survival rate and FER, and the growth rate and FER were 0.0984, 0.3732 and 0.5654, respectively. Apart from a low phenotypic and genetic correlation between the survival rate and growth rate, the correlations among the other traits were moderate.
遗传改良，包括提高生长速度、成活率和饲料效率比（FER），可以使大菱鲆的生产效率最大化。为了确定将这三个性状纳入育种计划的可行性，需要对生长速度、成活率和FER进行遗传评估。在本研究中，产生了20个全同胞家系。使用一种小样本方法来计算生长速度、成活率和FER，以代表个体的相应数据。然后，评估了这三个经济性状的遗传参数。大菱鲆成活率、生长速度和FER的遗传力分别为0.109001、0.232335和0.101866。成活率和FER的遗传力较低，而生长速度的遗传力适中。成活率与生长速度、成活率与FER、生长速度与FER之间的表型相关性分别为0.0919、0.4609和0.2472。生长速度与成活率、成活率与FER、生长速度与FER之间的遗传相关性分别为0.0984、0.3732和0.5654。除了成活率与生长速度之间的表型和遗传相关性较低外，其他性状之间的相关性适中。
