Abstract:

To investigate the effect of first refeeding after starvation on energy substances of Onychostoma sima, control group (continuous feeding for 14 days), starvation group (continuous starvation for 14 days), and re-feeding group (continuous starvation for 13 days and then feeding for 1 day) were set up, and blood glucose, serum protein, triglycerides, cholesterol, hepatic glycogen, and hepatic fat content were measured at the end of the experiment. The results showed that the contents of blood glucose, serum protein, and triglycerides of Onychostoma sima significantly decreased after 14 days of starvation compared with control group(p<0.05). After the first refeeding following starvation, these three indicators were basically restored, and there was no significant difference in cholesterol content between different groups. Hepatic analysis showed that the starvation group consumed a large amount of hepatic glycogen, while the re-feeding group partially recovered its hepatic glycogen content, with significant differences compared with control group. There was no significant difference in hepatic fat content between the re-feeding group and the starvation group. In summary, starvation for 14 days did not have adverse effects on the growth and development of Onychostoma sima, which could quickly recover their metabolism after the first refeeding based on their nutritional status.

Key words: Onychostoma sima, starvation, first refeeding, energy substances