Intake and digestibility of diets containing castor bean meal detoxified to finish of sheep Consumo e digestibilidade de dietas contendo farelo de mamona destoxificado para ovinos em termina o

The effect of including detoxified castor bean meal to substitute soy bean meal was evaluated to sheep finishing diets on intake, digestibility and energy value of the diets. A positive linear effect was verified for ether extract intake and acid detergent fiber with an intake raise of 0.015 g/BW0.75 in ether extract and 0.090 g/BW0.75 in acid detergent fiber per each unit percentage of detoxified castor bean meal added to the diet. There was maximun value in hemicellulose intake when included 39.55% of detoxified castor bean meal to the diet. Negative linear effect was verified for dry matter, organic matter, crude protein, total carbohydrates digestibility, respectively, with 0.0536, 0.0507, 0.0705 and 0.0572% decreases per unit percentage of detoxified castor bean meal added. Positive quadratic effect was verified for neutral detergent fiber and hemicellulose digestibility with 54.93 and 64.53% maximum in levels of the 38.6 and 31.4, respectively. Detoxified castor bean meal inclusion does not influence dry matter and nutrients intake, attending these animal class nutritional requirements. Including detoxified castor bean meal decreases dry mater, organic matter, crude protein, total carbohydrates digestibility, being in this situation recommended the inclusion of to 33% in the diet by allowing high neutral detergent fiber and hemicellulose digestibility. Despite these effects, the energy value of the diets is not influenced by the inclusion of detoxified castor bean meal. Avaliou-se a substitui o do farelo de soja pelo farelo de mamona destoxificado em dietas para ovinos em termina o. O consumo de extrato etéreo e fibra em detergente ácido foi linear positivo, com aumento de 0,015 e 0,090g/UTM por unidade percentual de inclus o de farelo de mamona destoxificado, respectivamente. O consumo máximo de hemicelulose ocorreu para dietas que continham 39,55% de farelo de mamona destoxificado. A digestibilidade da matéria seca, matéria organica, proteína bruta e carboidratos totais decresceu linearmente em 0,0536; 0,0507; 0,0705 e 0,0572%, respectivamente, por unidade percentual de acréscimo de farelo de mamona destoxificado. Os valores máximos para digestibilidade da fibra em detergente neutro e hemicelulose, 54,93 e 64,53%, ocorreram para dietas que continham 38,6 e 31,4% de farelo de mamona destoxificado, respectivamente. A inclus o de farelo de mamona destoxificado n o influencia o consumo de matéria seca e nutrientes e possibilita atendimento às exigências nutricionais de ovinos em termina o. Entretanto, elevadas propor es, reduzem a digestibilidad