池塘养殖下_鱼芒_鲶的生长研究

本文研究了从泰国引进的淡水养殖鲶类—(鱼芒)鲶在池塘养殖条件下的生长规律.根据6年的生长测量数据,体长和体重的相关式为W=0.1193L2.549,3龄以前为幼鱼阶段,体长、体重相对增长率较大,生长指标较高;其生长适合于VonBertalanffy生长方程.生长曲线的拐点在2—2.5龄间,故池塘养殖(鱼芒)鲶生产周期不宜超过2年.

STUDY ON THE GROWTH OF PANGASIUS SUTCHI IN POND CULTURE

Pangasius sutchi ( Fowler ) , a freshwater Catfish, was first introduced into China from Thailand in 1978. This paper deals with the growth of Pangasius sutchi in pond culture in China. According to the data gathered from the past 6 years, the length-weight relationship formula was W = 0.1193L2.549 . It has been found that the growth in pond culture corresponds to Von Bertalanffy's growth equation; therefore, Wt is body-weight in graras at the age of t, and Lt is standard length in cm at the age of t. In pond culture conditions, the Pangasius sutchi matures at the age of 3 years, and the growth rate decreases after the adult stage. It is of little value from the commercial point of view to continue culturing it in ponds.