作 者：
刘科均;曾聪;谭俊杰;余建波;刘巧林;肖调义
单 位：
湖南农业大学动物科学技术学院;湖南省特色水产资源利用工程技术中心;水产高效健康生产湖南省协同创新中心
关键词：
洞庭青鲫;形态比较;生长特性;肌肉质构;北民湖
摘 要：
从北民湖采集300尾洞庭青鲫,对其进行形态学性状、生长和肉质特性分析。结果显示:各年龄组形态指标的变异系数间的差异无统计学意义,表明其性状稳定;通过Von Bertalanffy生长公式拟合得出洞庭青鲫的渐近体长和体质量分别为308.41 mm和1 075.00 g,生长系数和理论生长起点年龄分别为0.369 5和–2.407 0龄,体质量生长拐点为0.17龄;体长体质量关系表明,洞庭青鲫在1～2龄生长迅速,且各年龄段洞庭青鲫体型均呈现等比增长趋势;通过鳞片鉴定的该群体中2龄群体为优势群体,占比66.67%;该群体的雌雄性别组成为10∶1;洞庭青鲫肌肉硬度和弹性分别为(2 822.95±556.97) g和1.317±0.01。综上可知,洞庭青鲫是1种具有优良性状且在低龄阶段生长迅速的鲫群体。
译 名：
Characterization of external morphologies and muscle texture of Carassius auratus var. Dongting
作 者：
LIU Kejun;ZENG Cong;TAN Junjie;YU Jianbo;LIU Qiaolin;XIAO Tiaoyi;College of Animal Science and Technology, Hunan Agricultural University;Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization;Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province;
关键词：
Carassius auratus var. Dongting;;morphological comparison;;growth characteristics;;muscle texture;;Beimin Lake
摘 要：
Three hundred Carassius auratus var. Dongting from Beimin Lake were collected to analyze their morphological traits, growth performance and muscle texture.The results showed that the coefficient of variation among the studied age groups were not significant, indicating that their characters were stable. By constructing the Von Bertalanffy equation, the asymptotic body length and weight were 308.41 mm and 1 075.00 g, respectively. The growth coefficient and theoretical growth starting age were 0.369 5 and –2.407 0 years old, respectively, and the turning point of body mass growth was at 0.17. Based on length-weight relationship, C. auratus var. Dongting grows rapidly at the age of 1-2, and the body size of C. auratus var. Dongting at all ages presents an equal proportion growth trend. The 2 nd age group in this group identified by scales was the dominant group, accounting for 66.67% in population.The gender ration in the group 10∶1(male vs female). The muscle hardness and elasticity of C. auratus var. Dongting were(2 822.95± 556.97) g and 1.317±0.01 respectively. In conclusion, the C. auratus var. Dongting is a kind of C. auratus population with excellent characteristics and rapid growth in the young stage.
