Metabolizable Energy Values of Soybean Oil Meal and Meat Meal as Affected by Protein Level and Type

The purpose of this experiment was to determine what effect basal (reference) diets with different protein levels have on the caloric value of high protein feed stuffs being assayed. Sibbald et al. (1960) stated that “metabolizable energy values for corn were found to show significant variation when combined with different basal diets; wheat did not show this variation.” Anderson and Hill (1955) found that the level of feed intake and level of substitution may effect the metabolizable energy (ME) values. Kalmback and Potter (1959) substituted corn oil and beef tallow into a reference diet for cerelose. These investigators disclosed that the method of substitution significantly affected the ME value of each ingredient. The two feed stuffs assayed in this experiment were 44 percent protein soybean oil meal and 50 percent protein meat meal. In treatments 1 (T1) and 2 (T2) each of these proteins replaced a homogenous fraction (33⅓ percent) …