Abstract: The experiment was conducted to study the influence of starvation and refeeding on the energy metabolism in oriental weatherfish Misgurnus anguillicaudatus with initial wet body weight of （ 11.62 ± 2.22） g under （18 ± 0.5 ）℃ from April to May, 2004. The results showed that oxygen consumption and CO2 production of the fish starved for 20 days decreased by 31% （from 200 μg/（g · h） to 138 μg/（g · h） ） and 40% （from 200 μg/（g · h） to 120 μg/（g · h）） respectively, while ammonia- N excretion increased by 29.1% （from 6. 049 μg/（g · h） to 7. 808 μg/（ g · h） ） if compared with the initial value; In the course of starvation, the ratio of oxygen to nitrogen （O/N） also decreased, which indicated that lipid and protein were used as first energy source, and then mainly consumed protein; the respiratory quotient （RQ） increased first, and then declined. After 5 - day refeeding, all the metabolism parameters including the oxygen consumption, CO2 production, ammonia - N excretion, O/N and RQ turned to increase if compared with those of fish starved for 20 days.
2005, Vol. 20 
