A B S T R A C TIn this study, the effect of a dietary supplementation of Apium graveolens on growth performance, digestive enzyme activities and immune response of juvenile common carp (Cyprinus carpio) were evaluated. C. carpio, with an average weight at the beginning of the experiment of 6.5 ± 0.07 g, were supplemented with a celery (Apium graveolens) aqueous methanolic extract at a dose of 0% (control), 0.1%, 0.5% or 1% over 45 days. Every 15 days, respiratory burst, lysozyme and myeloperoxidase activity were measured, and at the end of the study, haematological responses, growth performance and digestive enzyme activity were investigated. Respiratory burst and myeloperoxidase activity was significantly improved in all treated groups compared with the control group (P ˂ 0.05). Lysozyme activity was highest in the 0.1% and 1% extract groups. At the end of the study, the final weight (FW), weight gain (WG) and specific growth rate (SGR) were significantly increased in the 0.1% group compared with the other groups. The feed concentration ratio was decreased in the 0.1% and 1% groups compared with the control (P < 0.05). Haematological parameters were affected by A. graveolens extract intake (P ˂ 0.05). The total white and red blood counts, haemoglobin content and haematocrit value were highest in the 0.1% extract group (P ˂ 0.05). However, the mean cell volume and mean cell haemoglobin concentration were decreased in the 0.5% group (P ˂ 0.05). Digestive enzyme activity (trypsin, amylase and lipase) in all experimental groups was significantly elevated compared with the control (P ˂ 0.05). These results indicated an immunostimulatory and growth-promoting effect and increasing digestive enzyme activity of C. carpio supplemented with an A. graveolens aqueous methanolic extract. . (2018). Effect of celery (Apium graveolens) extract on the growth, haematology, immune response and digestive enzyme activity of common carp (Cyprinus carpio). Marine Science and Technology Bulletin, 7(2): 51-59.

A B S T R A C TThis study was conducted to determine the effect of dietary supplementation with Tilia tomentosa on the growth performance, digestive enzyme activity, haematological indices and nonspecific immune indices of juvenile common carp (Cyprinus carpio). Fish with an average weight of 4.35 ± 0.16 g were fed a diet supplemented with an aqueous methanolic extract of T. tomentosa at a dose of 0% (control), 0.01%, 0.05% or 0.1% for 45 days. The final weight, weight gain and specific growth rate were observed to be significantly higher for the 00.1% and 0.1% groups compared with the control group (P < 0.05). The feed conversion ratio was significantly decreased in the 0.05% and 0.1% groups compared with the control (P < 0.05). The activities of various digestive enzymes (amylase, lipase and trypsin) were also measured and no significant differences were observed compared to the control (P > 0.05). The mean cell volume of the 0.01% group was significantly increased compared to the control (P < 0.05) and increased lysozyme activity was observed in the 0.05% and 0.1% groups. Respiratory burst activity was significantly increased (P < 0.05) on days 15 and 30 for the 0.1% and 0.05% groups, respectively. No differences were observed for myeloperoxidase activity among the four groups. These results suggest that aqueous methanolic extract of T. tomentosa has a growth-promoting and immunostimulatory effect on common carp. Please cite this paper as follows:Almabrok, A.A., Amhamed, I.D., Mohamed, G.A., Bilen, S., Altief, T.A.S. (2018). Effect of Tilia tomentosa methanolic extract on growth performance, digestive enzyme activity, immune response and haematological indices of common carp (Cyprinus carpio). Marine Science and Technology Bulletin, 7(1): 12-20.

The present study was conducted to investigate the efficacy of Chenopodium album aqueous methanolic extract supplementation on the immunological and haematological indices, digestive enzyme activity and growth performance of the common carp (Cyprinus carpio). C. album was added to a basal diet at the rate of 0 (CA0), 0.01 (CA0.01), 0.05 (CA0.05) and 0.1 g kg −1 (CA0.1), and C. carpio was fed this diet for 45 days. Respiratory burst activity was significantly increased in all experimental groups on days 15 and 30 compared to the control (P < 0.05). Lysozyme activity was significantly increased over all sampling times compared to the control except in CA0.1 (P < 0.05). Myeloperoxidase activities were significantly increased in all experimental groups compared to Please cite this paper as follows: