Monitoring of Biochemical Effects of Phenol in the Carp (Cyprinus carpio) Fry

This study was conducted to investigate the possible side effects of phenol on biochemical param-eters of carp (Cyprinus carpio) fry with an average weight of 0.474±0.04 g. Fishes were treated with 0 (control), 5, 10 and 20 ppm of phenol during 24, 48, 72, and 96 hours. We have tested the effects of phenol on the biochemical profile, i.e., the total protein, lipid and glycogen levels, in the whole body of the carp samples. They showed change as total protein (p lt;0.05), glycogen (p gt;0.05) and lipids (p gt;0.05) content in the whole body. In view of results, the present study reports metabolic dysfunction in response to phenol toxicity in carp

Dietary chestnut bee pollen as an immunostimulant for rainbow trout (Oncorhynchus mykiss): Effects on the growth, haematological values, immune response, oxidant/antioxidant status, and survival against Aeromonas salmonicida subsp. achromogenes

The present study was designed to assess the influence of dietary supplementation with chestnut bee pollen at various levels in rainbow trout, Oncorhynchus mykiss. For two weeks feeding period, a total of 300 fish were allocated into 12 fiberglass tanks and divided into four equal groups, three replicates each, with chestnut bee pollen (BP) dietary inclusion as follows; the fish group was given a basal diet (C); fish group fed a diet supplemented with BP 1% (BP-1); fish group fed a diet supplemented with BP 2% (BP-2); and fish group fed a diet supplemented with BP 4% (BP-3). At the end of the experiment, growth, haematological values, immune status, antioxidant status, and survival rate against Aeromonas salmonicida subsp. achromogenes were evaluated. Dietary supplementation with chestnut bee pollen significantly improves growth performance. Fish fed the diets containing chestnut bee pollen had higher the haematological values than those fed the control diet. The results showed that all the immunological parameters in the groups fed with chestnut bee pollen were significantly higher when compared to the control group. Moreover, dietary chestnut bee pollen increased disease resistance against Aeromonas salmonicida subsp. achromogenes compared to the control group. The tissue SOD, CAT and GSH-Px activities of groups fed with chestnut bee pollen significantly enhanced when compared with the control groups. In contrast, the tissue MDA levels in all groups fed with chestnut bee pollen were significantly decreased. The best values for the antioxidant parameters were determined in the groups fed with 2 and 4% of chestnut bee pollen. Overall, these findings suggest that dietary chestnut bee pollen enhances the growth, the haematological values, the immune and antioxidant response and increases disease resistance against rainbow trout