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2008•Journal of Zhejiang Ocean UniversityRequires access

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

Yuanxing Zhang

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Abstract

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=107e0.028 8T, U=38.6e0.017 1T (15℃≤T≤30℃). The excretion and metabolism energy were power functions of body weight, which were expressed as R=228W-0.150, U=61.5W-0.199, respectively, according with the model of Y=aWb. The temperature and fish body weight seemed significantly relative to the proportion of metabolism energy and egestion energy(F)(P0.05). The proportion of growth energy(G)decreased with either the rise of temperature or the increase of body weight.

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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=107e0.028 8T, U=38.6e0.017 1T (15℃≤T≤30℃). The excretion and metabolism energy were power functions of body weight, which were expressed as R=228W-0.150, U=61.5W-0.199, respectively, according with the model of Y=aWb. The temperature and fish body weight seemed significantly relative to the proportion of metabolism energy and egestion energy(F)(P0.05). The proportion of growth energy(G)decreased with either the rise of temperature or the increase of body weight.

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Available abstract

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=107e0.028 8T, U=38.6e0.017 1T (15℃≤T≤30℃). The excretion and metabolism energy were power functions of body weight, which were expressed as R=228W-0.150, U=61.5W-0.199, respectively, according with the model of Y=aWb. The temperature and fish body weight seemed significantly relative to the proportion of metabolism energy and egestion energy(F)(P0.05). The proportion of growth energy(G)decreased with either the rise of temperature or the increase of body weight.

Key concepts: Bioenergetics, Energy metabolism, Body weight, Metabolism, Animal science, Chemistry, Fish <Actinopterygii>, Excretion

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