Abstract

Deniz D. Tosun and Mehmet S. Celikkale

In this study, effects of porcine growth hormone on the growth performance of rainbow trout (Oncorhychus mykiss) and its possible residue in fish meat and blood were investigated. The study was defined in two phases. The first phase is the rearing of the fish which were chosen to be in the same weight range as close as possible (90g-110g) till they reach the table size. Through this phase fish were injected with porcine somatotropin in periods differing from one group to another. First group received one injection, second two injections and third group received three injections. At the end of the study, fish in the experimental groups weighed more than the control groups. A1–K1 and A1–K2 groups were significantly different (p<0.05) in terms of weight, A2–K1, A2–K2, B1–K1, B1–K2, B2–K1, B2– K2, C1–K1 and C2–K2 groups were significantly different (p<0.01) as well. In the second phase, fish carcasses were analyzed for porcine growth hormone residues. There were no significant difference with the control groups in terms of residue levels.