摘要
在室内控温水族箱中设6℃、11℃、16℃和21℃四个水温组,饲养7周,研究了初始体重为1.72±0.24g的细鳞鱼(Brachymystax lenok)幼鱼摄食和生长的最适水温。结果表明,16℃时细鳞鱼的特定生长率(SGR)、日增重(DWG)、食物转化率(FCE)和摄食率(FI)显著高于其他处理组。这些参数与水温(T)之间的相关关系可用二次回归曲线来描述,特定生长率与水温的回归方程为SGR=(-2.601)+(0.887)T+(-0.027)T2;摄食率与水温的回归方程为FI=(0.111)+(0.292)T+(-0.009)T2(P<0.01,R=0.990);食物转化率水温的回归方程为FCE=(52.828)+(11.951)T+(-0.393)T2。细鳞鱼在11～21℃都可以摄食生长,最适水温为15.20℃～16.43℃。
The optimum temperature for growth and feeding was studied in lenok Brachymystax lenok weighing 1.72±0.24g at of 6℃,11℃,16℃,and 21℃for 7 days in a laboratory.The results showed that the specific growth rate（SGR）,daily weight gain（DWG）,food conversion efficiency（FCE）and feed intake（FI） were found significantly higher than those in other groups at 16℃.The correlations between these parameters and water temperature（T） were described by nonlinear regression models： SGR=（-2.601）＋（0.887）T＋（-0.027）T2（P0.01,R= 0.979）,FI=（0.111）＋（0.292）T＋（-0.009）T2（P0.01,R=0.990）,FCE=（52.828） ＋（11.951） T＋（-0.393） T2（P0.01,R=0.933）.It is concluded that the optimum temperature was showed to vary from 15.20℃ to 16.43℃.
出处
《水产学杂志》
CAS
2011年第4期6-8,24,共4页
Chinese Journal of Fisheries
基金
国家"十一五"支撑计划(2006BAD03B08)
公益性行业(农业)科研专项经费资助(201003055-15)
中央级公益性科研院所基本科研业务费专项(201102)
关键词
细鳞鱼
水温
摄食率
生长率
Brachymystax lenok
water temperature
feed intake
specific growth rate
