Effect of ethanol extract of pistachio hull (Pistachia vera) on growth factors, survival and body composition of rainbow trout (Oncorhynchus mykiss)

Ebrahimi, Eisa; Motamedi Tehrani, Javad; Goli, Sayed Amir Hosein; Shafiei Hasanabadi, Fariba; Pahlavani, Sajad

Effect of ethanol extract of pistachio hull (Pistachia vera) on growth factors, survival and body composition of rainbow trout (Oncorhynchus mykiss)

Document Type : Original Article

Authors

Eisa Ebrahimi ¹

Javad Motamedi Tehrani ¹

Sayed Amir hosein Goli ²

Fariba Shafiei Hasanabadi ¹

Sajad Pahlavani ¹

¹ Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran.

² Department of Agriculture, Isfahan University of Technology, Isfahan, Iran.

Abstract

This study was carried out to investigate the effect of pistachio green hull extract (PGHE) on growth, survival and body composition of rainbow trout. The experiment was performed in a completely randomized design with five treatments and three replications (14 fish in each replicates). Fish with 18.06±0.93 g initial weight, were fed with the diets (3% of biomass per day) for 8 weeks. The diets contained 0, 0.5, 1.5, 4.5 and 9 g PGHE/Kg were made. The total phenolic content of PGHE were 21.52 mg gallic acid/ gr dry matter. Results did not show any significant differences (P>0.05) in SGR (Specific Growth Rate), FCR (Feed Conversion Ratio), survival, hepatosomatic index and body composition (moisture, protein, lipid, ash) among the different treatments. The maximum condition factor (1.24±0.02) was observed in fish treated with 1.5 g PGHE/Kg in the diet, being significantly different from control group (p<0.05). The results showed that using different level of pistachio hull ethanolic extract had no negative impact on growth factors, survival and body composition of fish.

Keywords

Medicinal herbs

feeding

antioxidants

phenol

rainbow trout