The effects of dietary administration of Potassium Sorbate on growth related genes expression in common carp (Cyprinus carpio)

The present study was performed to investigate the effect of different levels of Potassium Sorbateon expression of genes related to growth (GH and IGF1) in Cyprinus carpio. For this purpose, 168 fish with average weight of 15.2 ± 2.6 g were fed on diets supplemented with 0%, 0.5%, 1% and 2% Potassium Sorbate(PS) for 8 weeks. At the end of feeding trial, RNA extracted from liver and brain, cDNA syntesised with SuPrime Script RTase and Real-time PCR analysis performed by using primers relate to GH and IGF1, and Beta-actin as housekeeping genes. Expression of both growth genes increased in fish fed supplemented diet compare to control. Significant differences (P<0.05) were observed in expression of GH in fish fed 1% and 2% PS when compared to 0.5% and control. The expression of IGF1 gene showed significant difference in 1% PS treatment compared 0.5% (P<0.05). These results revealed beneficial effects of 1% dietary PS on growth related genes expression in Common carp and can be used as a growth stimulant in aquatic diets.