Limiting Amino Acids of Polanga (Callophyllum inophyllum) Oil Cake in Chicks

Essential amino acids of defatted Polanga (Callophyllum inophyllum) oil cake (DPOC) and some of limiting amino acids of maize-DPOC (60:40) diet were determined. Five dietary regimens were fed to layer chicks. The basal diet (D₁) contained maize 55%, DPOC 37%, soyabean oil 4% and mineral mixture 3.7% and had no amino acid supplementation. The diet D₂ contained lysine, methionine and threonine, diet D₃ contained lysine and Methionine, diet D₄ contained methionine and threonine while the diet D₅ contained lysine and threonine as supplements to the basal diet. The average weight gains of the chicks at the end of 4^th week were 33.6±1.6, 100.6±4.3, 76.1±2.7, 38.9±3.4 and 91.6+5.9 for the groups D₁, D₂, D₃, D₄ and D₅ respectivelv. The results showed that lysine, threonine and methionine were the flrst, second and third limiting amino acids, respectively in the maize-DPOC diet.