This experimentaimed to determine the metabolizable energy and the digestibility of detoxifiedcastor meal and castor cake nutrients for broilers. A total of 180 Cobb-500TMbroilers from 21 to 32 days of age was randomly distributed in three treatmentswith six replicates of 10 broilers - 5 males and 5 females. The experimentaltreatments were a reference-diet and two test-diets composed of 80% of reference-dietand 20% of detoxified castor cake or castor meal. The adaptation period rangedfrom 21 to 27 days of age and the total excreta collection period ranged from28 to 32 days of age. The detoxified castor meal presented apparent metabolizableenergy of 2,032 kcal/kg of natural matter, apparent metabolizable energy correctedfor nitrogen balance of 1,829 kcal/kg of natural matter and the digestibilitycoefficients of 57.8% dry matter, 68.4% crude protein, 10.5% crude fiber, 35.9%nitrogen free extract, 80.0% ether extract and 26.6% ash. In the detoxifiedcastor cake, the apparent metabolizable energy content was 2,550 kcal/kg ofnatural matter, the nitrogen corrected apparent metabolizable energy balancewas of 2,320 kcal/kg of natural matter and the digestibility coefficients of60.6% for dry matter, 77.2% for crude protein, 14.0% for crude fiber, 45.7%for nitrogen free extract, 85.4% for ether extract and 28.2% for ash. The metabolizableenergy and digestibility of nutrients in detoxified castor cake are higher thanin the detoxified castor meal.
