Influence of feeding regime and of food biochemical composition upon feeding behavior in common carp (Cyprinus carpio)

It is revealed that long-term starvation considerably increases the speed of reaction to food and ration size in common carp (Cyprinis carpio) under conditions simulating the benthic type of feeding. The presence of food in the intestine and the digestion stage considerably affect the fish feeding behavior. Six hours postfeeding irrespective of the feeding regime and food composition, the ration size decreases statistically significantly, while the latent time of feeding increases. The forage composition has a less pronounced effect upon fish feeding behavior than the process of digestion. However, the former factor considerably effects the glycemia level. The most pronounced decrease in the reaction to food and in the ration size coincide with an increase in the glycemia level and perhaps with an increase in the amino acid levels in the fish blood.