Effects of amino acids and metabolizable energy on egg characteristics and broiler breeder performance

A study was conducted to determine the effects of diet formulation type on egg characteristics and reproductive performance of broiler breeder (50 to 64 weeks of age). 140 female and 20 male breeders in four treatments with five replicates (7 females: 1 male) were used in the randomized 2 x 2 factorial design. Four experimental diets were formulated based on two factors: two levels of apparent and true metabolizable energy corrected for nitrogen of feedstuffs (AMEn and TMEn) and two levels of total amino acids (TAAF) and digestible (DAAF) feedstuffs. The results show that egg weight, egg production, fertility and hatchability were significantly different and affected by diet formulation based on energy (P