Protein and amino acid content of feed ingredients and the impact of dietary balanced protein on maximizing economic returns from broiler technical responses
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Dietary balanced protein (BP) has been adopted in broiler feed formulation. It not only considers the crude protein (CP) content of the diet, but more importantly the essential or indispensible amino acids (AAs) are considered and maintained in balance. The BP concept is when AAs are set relative to lysine. Since AAs play an important role in determining feed cost and bird performance, using AAs efficiently by minimizing the excess is a method of minimizing feed cost. This research was conducted to obtain the data need to understand AA content in major feed ingredients, which is useful in adjusting ingredient matrix values to meet the targeted nutrients. The CP content of ingredients is not a reliable measurement in feed formulation. An experiment was conducted to show the impact of broiler responses from different digestible lysine levels during two phases. The results were used to generate different production functions in order to determine the most profitable feeding level at various input and output prices.