High-quality fattening feed must have a high energy density, typically derived from maize, sorghum, or barley. For beef cattle or pigs, look for a Metabolizable Energy (ME) content of 11-13 MJ/kg. The Crude Protein (CP) levels should be optimized based on the growth stage, generally ranging from 12% to 16%. Additionally, ensure the inclusion of essential amino acids (like Lysine and Methionine) and a balanced mineral premix (Calcium-Phosphorus ratio of 2:1) to support rapid muscle deposition rather than just fat accumulation.