【摘要】 对工厂化养殖的大菱鲆生长特性进行了研究,结果表明:其生长旺盛期在2龄,日生长最快达13.52g·d-1,平均为6.84g·d-1,养殖250d以上其平均体重可达500g左右,1周年达1000g,2周年达3000g。其体长和体重的关系为W=0.0314SL3.0972,全长和体长的关系为TL=1.1839SL+0.5012,体高与全长的关系为BD=0.8512TL-1.0358。von-Bertalanffy生长方程分别是Lt=49.2294(1-e-0.7106(t+0.2211)),Wt=6186.2350(1-e-0.7106(t+0.2211))3.1609,体重生长拐点年龄1.3984,参照生物学指标,大菱鲆应该在拐点后上市,它符合经济原则及人们的消费习惯。更多还原

【Abstract】 A study has been carried out on growth characters of industrially farmed turbot, Scophthalmus maximus L. The results showed that the maximum growth rate of 13.52g·d^-1 appeared on two-year-old fish and the average growth rate is 6.84g·d^-1. The body weight could reach more than 500g after 250 days, 1000g after one year, and 3000g after 2 years. The relationship of the body length and the weight is W=0.0314SL^3.0972, and the relationship of total length and body length is TL=1.1839SL+0.5012; BD=0.8512TL-1.0358 showed the relationship between body depth and total length. Von-Bertalanffy equation is Lt=49.2294(1-e^{-0.7106 （t+0.2211）}), Wt=6186.2350(1-e^{-0.7106 （t+0.2211）})^3.1609, the growth flection point of the body weight locates on 1.3984, the industrially farmed turbot should be harvested after the growth flection point, which matches both economy principle and consumption habit. In addition, growth difference was analyzed between nature and farmed groups by growth character index ′ integrated with K and L_∞. The results showed that farmed group grew significantly faster than natural group since there are better conditions under artificial control.更多还原