The effect of dietary energy and protein concentration and feeding level on feed utilization and body composition of carp (Cyprinus carpio L.).

A three factorial designed feeding experiment with common carp (Cyprinus carpio L.) was carried out in an intensive experimental rearing system. Fish (initial body weight 200 g) were fed on two different levels of dietary energy (16 and 18 MJ DE/kg DM), two different levels of protein (320 and 420 g CP/kg DM) and also two different feeding intensities (100% and 75% of the maximum intake).

Magnesium status in freshwater fish, common carp (Cyprinus carpio, L.) and the dietary protein-magnesium interaction.

Common carp juveniles were fed for 9 weeks one of the eight semipurified diets containing graded levels of magnesium, 0.08, 0.6, 1.

The effect of large doses of vitamin C and magnesium on stress responses in common carp, Cyprinus carpio.

1. Plasma magnesium, cortisol, lactate and ascorbic acid were examined in common carp subjected to various dietary treatments and following handling stress. 2.