Guluzar Tuna Kelestemur
Firat University, Turkey
Title: Effects of dietary Propolis and Vitamin E on growth performance and antioxidant status in juvenile rainbow trout Oncorhynchus mykiss under different flow rate
Biography
Biography: Guluzar Tuna Kelestemur
Abstract
The present study investigated the effects of propolisand vitamin E supplementation in diets of juvenile rainbow trout subjected to two different flowrates (0.9and 2.1 L min−1) on growth performance, and vitamin A, C and E concentrations in tissues as well as malondialdehyde (MDA) levels. Juvenilerainbowtroutwere fed withdietscontaining 10 and 30 g propolis kg−1, 60 mg kg−1 vitamin E (Rovimix E-50 adsorbate; min.%50 dl-α-tokopherlyacetate) andwithoutsupplementedbasaldietfor 12 weeks. Weightgain (WG) in the C groupwassignificantlylower (P < 0.05) than P10, P30 and E60 groups at bothflow rate treatments. At 2.1 L min−1, specificgrowth rate (SGR) in the C group was significantly lower (P < 0.05) than other groups, but at 0.9 L min−1, SGR of fish didnot differ among thedietsgroups (P > 0.05). Survival rate (SUR) was higher in propolis and vitamin E supplemented dietgroups (P < 0.05) than control diet group at 0.9 L min−1. Fish fed on diet E60 had higher (P < 0.05) tissue vitamin E concentration than fishes fed on other diets groups. Vitamin C concentration in rainbowtrout tissues was significantly affected by the 30 g propolis supplemented diet group (P < 0.05), followed bythe 10 g propolis supplementeddiet group (P < 0.05). MDA level of E60 group was found significantly decreased instead of different than other groups (P < 0.05). The results of Student's t-test revealed that WG, SGR, SUR values, vitamin (A, C, E) concentrations and MDA levels of tissues were negativelyaffected by0.9 L min−1flow rate treatment in juvenile rainbowtrout.