common carp, cyprinus carpio (l.) were blood-sampled after 0, 2, 6, 12, 24, 48 and 72 h fasting to find serum baseline levels. there was a significant difference in serum glucose, lactate, triglyceride and total protein but not cholesterol, albumin and calcium levels among the treatments. glucose levels increased with fasting tine and reached to a peak after 6 h. then, the glucose level decreas...