@article {10.3844/ajabssp.2010.222.227, article_type = {journal}, title = {Effects of Supplemental Lysine and Methionine on Growth Performance and Body Composition for Grass Carp (Ctenopharyngodon idella)}, author = {Yang, Hui Jun and Liu, Yong Jian and Tian, Li Xia and Liang, Gui Ying and Lin, Hao Ran}, volume = {5}, year = {2010}, month = {Jun}, pages = {222-227}, doi = {10.3844/ajabssp.2010.222.227}, url = {https://thescipub.com/abstract/ajabssp.2010.222.227}, abstract = {Problem statement: The utilization of crystalline amino acids was detected for growth performance and body composition of juvenile grass carp (Ctenopharyngodon idella). Approach: L-Lysine sulphate and Methionine Hydroxy Analog-Ca (MHA-Ca) were selected for determination. Two diets were formulated with or without amino acids supplementation. Each diet was assigned to 10 tanks in a completely randomized design for 8 weeks. Results: The results demonstrated that the final weight, Weight Gain (WG) and Protein Retention (PR) of the fish fed diet with supplemental lysine and methionine were significantly higher, while the Feed Conversion Ratio (FCR) were significantly lower in comparison with the reference group. The Condition Factor (CF) of the fish fed diet with lysine and methionine supplementation were significantly higher than the reference group (p}, journal = {American Journal of Agricultural and Biological Sciences}, publisher = {Science Publications} }