Effects of Dietary Protein Decreases by Using L-Lysine and Methionin amino acids on Growth Performance, Survive and Carcase Composition of Rainbow Trout (Oncorhyus mykiss)

Subject Areas : Breeding and Aquaculture Sciences Journal

amirhossein nasseri ¹ , Meysam Sabzeh ² , elham ajam hassani ³

1 - واحد آزادشهر
2 - واحد آزادشهر
3 - واحد آزادشهر

Received: 2017-05-02 Accepted : 2017-05-02 Published : 2017-05-02

Keywords:

Abstract :

This study surveys on the effects of L-lysine and methionon amino acids on growth performance, survival rate and body composition of Rainbow trout (Oncorhynchus mykiss). Fish with initial average weight 105.23 +  6.33 g in 5 treatments fed with different levels of Lysine (1 and 3 %) and methionine ( 1 and 2%) for 8 weeks. The results showed that the treatment which fed 2 % methionine had the best growth performance, the most amount of protein observed in the carcase of the fish which fed L-Lysine and he most lipid content observed in treatment which fed 2 % methionin too.