Effects of Dietary Nucleotides on Amino Acid Profile of Rainbow Trout (Oncorhynchus mykiss) Muscle

Salami Khorshidi, N.; Keyvanshokooh, S.; Salati, A. P.; Zakeri, M.; Mahmoudi, N.; Tahmasebi-Kohyani, A.

doi:10.22059/jfisheries.2013.30543

Effects of Dietary Nucleotides on Amino Acid Profile of Rainbow Trout (Oncorhynchus mykiss) Muscle

Authors

N. Salami Khorshidi

S. Keyvanshokooh

A. P. Salati

M. Zakeri

N. Mahmoudi

A. Tahmasebi-Kohyani

10.22059/jfisheries.2013.30543

Abstract

Effects of different levels of dietary nucleotides (NT) were studied on muscle amino acid profile of rain bow trout with an average weight 11.35±0.32 over 8 weeks. This experimental was carried out in 700 L circular tanks with 40 fish per tank. NT was added to the diet at the rates of 0.0, 0.05, 0.1, 0.15 and 0.2%. Fish were fed 5 times a day at a rate of 3-5% body weight. After 8 weeks of feeding, the fish fed 0.2% NT showed higher SGR and WG (%) compared to the control group. No significant differences were observed in fish fed 0.2% NT compared to the fish fed 0.15% NT. The results showed that dietary supplementation of NT has significant effect on His, Arg, Thr, Val, Ilu, Leu, Phe, Lys, Glu, Ser, Gly, Tyr+Phe, TEAA and TNEAA. In fish fed 0.2% NT, total essential amino acid (EAA) content was significantly higher among the experimental groups.

Keywords

Amino acid composition

Nucleotides

Nutrition

Oncorhynchus mykiss

Rain bow trout