Effects of Diets Formulation Based on Different Methods of Metabolisable Energy (AMEn & TMEn) and Amino Acids (TAA & DAA) Expression on Performance, Energy and Protein Efficiency Ratio and Productive Efficiency Factor of Broiler Chicks

A total of 720 Arian chicks were used in this study, to determine the effects of diets formulation based on different expression systems of energy and amino acids of feeds and requirements on performance, relative efficiency of energy and protein and productive efficiency factor. Four diets were arranged in a 2 x 2 factorial design with 2 systems of energy expression (AMEn and TMEn) and 2 methods of amino acids requirement (TAA and DAA) from 1 to 42 days of age. Each treatment was replicated six times with each replicate consisting of 15 males and 15 females. The results showed that, when the feed formulation was based on TMEn increased feed intake and growth rate compared with AMEn. Productive efficiency and body weight increased when digestible amino acid were used to expression of amino acid of feeds and requirements. But the feed conversion ratio decreased by AMEn system. It is concluded that use of TMEn and DAA methods to feed formulation could improve the performance and productive efficiency in Arian broilers.