Ration formulation to meet the nutritional requirements of monogastric animals has become a challenge, since the ban of the use of animal protein as feed. Two experiments were conducted to evaluate the compatibility of Quality Protein Maize (QPM) and Sesame Seed Meal (SSM) as a substitute for Synthetic Amino Acids (SAAs) and their economic advantage over the commercial feed. Four each of iso-caloric and iso-nitrogenous starter and finisher broiler treatment rations (T₁-T₄) containing four different combinations of QPM and SSM were studied with 360 commercial broiler chicks in Completely Randomized Design (CRD) with 3-replications, using commercial ration (T₆) and treatment ration containing SAA (T₅) as control. Both QPM and SSM were included to contribute 50% of the total Crude Protein (CP) requirements of the broilers in each of the four treatments. At the end of the experiments, two broilers (one male and one female) from each replication were selected and scarified to evaluate the development of different cut ups and abdominal fat. The result obtained indicated that there was no significant difference (P >0.05) between the groups fed with SAA treatment and the treatment containing 36% QPM and 17.3% SSM in feed consumption, body weight gain, and mortality during the entire experimental period. However, the rate of survival, uniformity and posture of birds are affected as the level of SSM inclusion is beyond 17.3% during the first phase of brooding. Biological and economic efficiencies as measured by the amount of feed and feed cost required per kg live weight gain was significantly lower for the groups fed on the treatments (T₁ and T₂) containing 30-36% QPM plus 15-17.3% SSM during the entire study period. There was no significant (P> 0.05) difference in abdominal fat and breast weight and in average drumstick and thigh percent between all the groups, although the abdominal fat tends to increase with the increase in the level of SSM. In summary, the results of this study indicated that 30-36% of QPM plus 15-17.3% SSM could safely and economically be used to substitute SAA in broiler ration. Moreover, the inclusion of 30-36% QPM plus 15-17.3% SSM in broiler ration has a significant economic advantage over the use of commercial ration.

The major part of poultry nutrition consists of cereals that are normally deficient in quantity as well as quality of proteins, especially in some critical amino acids such as lysine, methionine and tryptophan. On the other hand, broilers critically require these essential amino acids for their rapid growth. Tropical broiler starter rations contain 21-24% CP, and in the total amount, grain and mill feed supply approximately half of the protein needs for most poultry rations (Ensminger et al., 1990).

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