北京地区大鲵苗种生长研究

Growth of Giant Salamander(Andrias davidianus)Juveniles in Beijing

在北京地区人工养殖非原产地大鲵苗种140尾,在适宜的饲养环境下,经过126d的饲养,幼鲵的体质量由(51.83±9.95)g增至(121.96±31.97)g,质量净增加达70.13g,质量增加率达137.24%。幼鲵生长态势极为迅速,质量增加效果明显。同时对不同生长时期的幼鲵全长与体质量测量,利用SPSS19.0软件进行了回归分析。结果表明,全长与体质量之间存在极显著相关关系,主要表现为三次函数关系,其关系式为y=23.172-0.046x2+0.006x3。

A total of 140 individuals of giant salamander （Andrias davidianus） with body weight of （51 .83 ± 9 .95） g were reared in appropriate environment in Beijing for 126 days .The giant salamander had body weight of （121 .96 ± 31 .97） g ,with net body weight gain of 70 .13 g ,and body weight gain rate of 137 .24% at the end of the experiment .The regression analysis of body length and body weight in different grow th periods using SPSS 19 .0 revealed that the significant correlation between the body length and body weight was described as equation with three function y = 23 .172-0 .046x2 ＋ 0 .006x3 .