Effect of Ethanolic Extract of Dill (Anethum graveolens) as a Food Additive on Growth Parameters and Activity of Lysozyme and Complement in Rainbow Trout (Oncorhynchus mykiss)

Zeilab, Reza; Abedian Kenari, Abdolmohammad; Esmaily, Amir Hossein

doi:10.22059/jfisheries.2019.263187.1039

Effect of Ethanolic Extract of Dill (Anethum graveolens) as a Food Additive on Growth Parameters and Activity of Lysozyme and Complement in Rainbow Trout (Oncorhynchus mykiss)

Document Type : Research Paper

Authors

Reza Zeilab ¹

Abdolmohammad Abedian Kenari ²

Amir Hossein Esmaily ³

¹ M.Sc. Graduate, Aquaculture Department, Natural Resources and Marine Sciences Faculty, Tarbiat Modares University, Noor, Iran.

² Associate Professor, Aquaculture Department, Natural Resources and Marine Sciences Faculty, Tarbiat Modares University, Noor, Iran.

³ Assistant Professor, Aquaculture Department, Natural Resources and Marine Sciences Faculty, Tarbiat Modares University, Noor, Iran.

10.22059/jfisheries.2019.263187.1039

Abstract

In this study, the effect of ethanolic extract of dill (graveolens Anethum) on growth and immunological parameters of rainbow trout fingerlings was evaluated (average initial weight of 12±0.32 g). A basal diet was supplemented with levels of 0 (control), 500, 1000, 1500 and 3000 mg ethanolic extract of dill kg^-1to formulate five experimental diets. After 56 days of feeding trial, fish fed diet with 1000 and 1500 mg kg^-1 had the highest final weight compared to control but in terms of feed conversion ratio, specific growth ratio and protein efficiency ratio did not show a significant difference compared to control group. All treatments had a high survival rate and did not show significant differences with each other. The highest activity of lysozyme and complement was observed in the 1500 mg kg^-1 treatment but did not significant difference compared to the control group (P>0.05). The results showed that concentrations of 1000 and 1500 mg kg^-1 of ethanolic extract of dill increased the weight in these factors and the concentration of 1500 mg kg^-1 treatment had better effect on immunity.

Keywords

Anethum graveolens

Immunological parameters

Growth

Feeding

Subjects