Coeficientes de digestibilidade aparente da proteína e da energia dos alimentos e exigência de proteína digestível em dietas para o crescimento do pintado, Pseudoplatystoma coruscans

• Autor(a) principal: Gonçalves, Emílio Guedes [UNESP]
• Data de Publicação: 2002
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/144104; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/12-09-2016/000164499.pdf
• topic: Peixe - Nutrição; Peixe - Crescimento; Proteinas na nutrição animal; Peixe - Alimentação; Digestão; Fishes

The present work was developed in order to determine the protein and energy 4 apparent digestibility coefficients of the principal's ingredients used in pintado juvenile 5 formulation. 600 juveniles with initial weight and total length means of 9.80 ± 1.48g 6 and 13.00 ± 1.00 cm respectively were used. The modified Guelph system was 7 appraised to collect feces. All the twelve test diets were constituted of 69.50% of the 8 reference diet, 0.50% of chromium oxide used as inert marker, and 30% of the 9 ingredient tested. After three days of feeding with the test diets, fish were transferred to 10 the collect aquariums, where feces were collected in intervals of 30 minutes. Using 11 digestibility of the protein, ingredients with best results in this nutrient were fish meal 12 (84.14%), soybean meal (67.10%), corn (64.18%) and chicken poultry by-product 13 (61.25%). Was only observed reasonable values for energy digestibility in half of the 14 ingredients tested; for fish meal, corn, soybean (whole, toasted) and soybean meal of 15 wheat and rice, the means coefficients values were: 72.80%, 57.39%, 64.95%, 61.66%, 16 53.20% e 51.84%, respectively. Fish meal was the best ingredient available for pintado 17 juveniles diet formulation (45.38%DP and 2790.42 Kcal DE/Kg), followed by soybean 18 meal (30.86%DP and 2708.45 Kcal DE/Kg), soybean (whole, toasted) (18.34%DP and 19 3121.06 Kcal DE/Kg), corn (5.86%DP and 2691.53 Kcal DE/Kg), and wheat meal 20 (8.08%DP and 2265.13 Kcal DE/Kg)