温度和体重对养殖大黄鱼能量收支的影响

Effect of Temperature and Body Weight on Bioenergetics of Cultured Pseudosciaena crocea

主要分4个温度级、5个体重级研究了温度和体重对养殖大黄鱼能量收支的影响。结果表明,大黄鱼的代谢能(R)及排泄能(U)与温度成指数关系,关系式分别为R=107e0.0288T,U=38.6e0.0171(T15℃≤T≤30℃);大黄鱼代谢能和排泄能与体重呈负相关的幂指数关系,关系式分别为R=228W-0.150,U=61.5W-0.199,均符合Y=aWb模式。温度和体重对代谢能(R)和排粪能(F)所占摄食能(C)比例均有显著差异(P<0.05),生长能(G)所占比例随着温度上升和体重增加而有所下降。

Energy budgets of cultured Pseudosciaena crocea under five groups divided by sizes and four groups divided by temperature were investigated. The results showed that there were exponential relations between temperature and both excretion energy（ U）and metabolism energy（R ）, the relationships are R=107e^0.0288T, U=38.6e^0.0171T （15℃ ≤T≤30℃ ）. The excretion and metabolism energy were power functions of body weight, which were expressed as R=228W^-0.150, U=61.SW^-0.199, respectively, according with the model of Y=aW^b. The temperature and fish body weight seemed significantly relative to the proportion of metabolism energy and egestion energy（F）（P〈0.05）. The proportion of growth energy（G）decreased with either the rise of temperature or the increase of body weight.