Abstract: | In intensive cultures, fish is permanently affected both by the aquatic environment itself and by the interventions required by the applied growth technologies. Whichever their nature, such stressing factors induce in the organism identical biochemical and hematological reactions. From a hematological viewpoint, fish' functional response to stress is reflected in the modification of the normal hemoglobin and hematocryte ratios (BEJERANO, 1984; KEBUS et al., 1992), of the erythrocytary constants, and, equally, in the numerical evolution of the red and white blood cells. (WLASOW and DABROWSKA, 1989).
The present paper realizes a comparative analysis of the usual hematological indices in some farmed fish (rainbow trout - Oncorhynchus mykiss, common carp - Cyprinus carpio, silver carp - Hypophthalmichthys molitrix and grass carp - Ctenopharyngodon idella), under both normal and stress (i.e., alimentary, thermal, malady, a.s.o.) conditions. |
