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高温季节,在静止吋(摄食状态)的氮代谢方程式鲢为Mg=0.054W~(0.884)(毫克-氮/小时);鳙为Mg=0.073 W~(0.782)(毫克-氮/小时);氮的运动代谢量随游泳速度(s)的增大呈指数增长。氮的收支公式鲢为0.44 C_N=0.181 W~(0.61)+24/0.75{0.054-0.021(1-e~(0.2168)}W~(0.884);鳙为0.57 C_N=1.98 W~(0.61)+24/0.75{0.075-0.033(1-e~(0.1798)}W~(0.782)。以鲢和鳙对微囊藻和溞的氮的消化吸收率为基础,推算出在湖中的鲢、鳙对食物的消化率(按氮计算)分别为44%和57%。上述摄食量与使用森下(1968)公式所求得的结果极为一致。按湿重计算,20克的鲢每天的摄食量为体重的65—80%,鳙则为47—55%。
In the high temperature season, the nitrogen metabolism equation of silver carp at stationary (ingestion) Mg = 0.054W ~ (0.884) mg - N / h; 鳙 = 0.073W ~ (0.782) mg / The amount of nitrogen metabolism increased exponentially with increasing swimming speed (s). The formula for the calculation of nitrogen budget is 0.44 C_N = 0.181 W ~ (0.61) + 24 / 0.75 {0.054-0.021 (1-e ~ (0.2168)} W ~ 0.884 and 7 0.57 C_N = 1.98 W ~ (0.61) (0.782) + 24 / 0.75 {0.075-0.033 (1-e ~ (0.1798)} W ~ (0.782) .Based on the digestion and absorption rates of nitrogen from Microcystis aeruginosa by silver carp and bighead carp,消 The digestibility of food (calculated as nitrogen) was 44% and 57%, respectively, which is in good agreement with the results obtained using the Morishita (1968) formula.According to wet weight, the daily intake of 20 g silver carp 65-80% of body weight and 47-55% of body weight.