Abstract
A study was conducted to determine the effects of dietary energy and amino acid content on the weight of the abdominal fat pad of broiler chicks. Diets containing 2970, 3190, and 3410 ME kcal/kg were formulated to contain 70 to 120% of the 1977 NRC amino acid requirements. These diets were fed to broiler chick s for 57 days. After slaughter in a commercial processing plant carcasses were evaluated.Through the dietary manipulations it was possible to produce carcasses of widely varying abdominal fat pad size. Although total fat pad weight was directly influenced by the dietary energy level of the diets, covariance adjustments for differences in body weight markedly reduced the influence of dietary energy. The degree of fatness could be significantly reduced by increasing the dietary amino acid levels within a given energy level.
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