In 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.
Primary Language | English |
---|---|
Subjects | Hydrobiology |
Journal Section | Research Article |
Authors | |
Publication Date | December 30, 2018 |
Submission Date | September 6, 2018 |
Acceptance Date | October 15, 2018 |
Published in Issue | Year 2018 |