Abstract:

In order to discuss the effect of Amino Acid Balance of Fishmeal-free Protein Feed in the different formula for Performance of Tilapia, by means of five chemical analysis methods and results of mariculture experiments, using tilapia fish as protein reference model, the nutritional value of essential amino acid (EAA) of tilapia fishmeal-free experimental formula groups and control group were evaluated. The results showed that formula Ⅰ was the most effective experimental group. The essential amino acid index (EAAI), score of ratio coefficient of amino acid (SRCAA) and the essential amino acids relative ratio (EAARR) were 90.75, 77.75 and 85.58, respectively. And production performance of formula 1 was also the best, the growth rate of tilapia was up to 158% and feed coefficient was 1.24. It suggests that growth effect and feed conversion rate (FCR) be better in experimental formulae groups containing more-balanced amino acid. It is rather effective to improve the growth performance, FCR and protein conversion efficiency of tilapia using amino acid balance of fishmeal-free feed.