Determinação dos valores de energia metabolizável do babaçu integral para frangos de crescimento lento

Abstract

For greater profitability in the production of slow-growing broilers, the aim is to reduce feed costs. Therefore, the present study was carried out with the objective of determining the apparent metabolizable energy (AME) and apparent metabolizable energy (AMEn) values corrected by the nitrogen balance of the diets. A total of 108 broiler chicks of the Label Rouge® strain, mixed batch, acquired with one day of life were used. The 21-day-old birds were weighed and distributed in experimental units (galvanized wire cages 1.00 x 1.00 x 0.40 m, equipped with a feeder, trough-type drinker and overlapping trays for the collection of excreta) according to the completely randomized design, with an adaptation period of four days and three days of excreta collection. Three diets were evaluated: reference diet (DR), and the other treatments were inclusions of the RD by the test food (ground whole babassu) in 10% (test diet 1 - DT1) and 20% (test diet 2 - DT2). The treatments were 10 and 20% inclusion of babassu bran in the diet, ending in three treatments and six replications with seven birds each. The experiment lasted 7 days. Feed intake, weight gain and feed conversion were also evaluated. The whole babassu bran presents and its composition 89.53 MS and 4762.93 EB, when included in 10 and 20% presented 70.65% of AME digestibility and 67.34% for AMEn, and 65.55% for AME and 61.79% of AMEn, respectively. In conclusion, the average values of AME and AMEn energy of babassu for slow growing broilers are 2925.62 and 3006.95 kcal/kg of diet, respectivel.