Replacement of corn with babassu mesocarp flour in balanced rations for broilers in the period from 1 to 21 days
DOI:
https://doi.org/10.5433/1679-0359.2015v36n3p1745Palavras-chave:
Coefficient of metabolizability, Feeding cost, Productive performance.Resumo
The objective of this study was to evaluate the technical and economic feasibility of partial replacement of corn with babassu mesocarp flour in diets for broilers from one to 21 days of age. Two hundred male day-old chicks, from the Cobb 500® line, were distributed in a completely randomized design with four treatments (0%, 10%, 20% and 30% replacement of maize flour with the babassu mesocarp) and five replicates were used comprising ten birds. Were evaluated performance (weight gain, feed intake, feed conversion and water intake), organ biometrics, metabolizability coefficients of dry matter (MCDM), crude protein (MCCP) and gross energy (MCGE) and cost of feeding diets containing babassu mesocarp flour (BMF). It was observed that the substitution of corn with BMF negatively influenced (P < 0.05) weight gain, feed conversion and body weight at 21 days of age. The MCDM and MCGE of the diets decreased with increasing level of substitution of corn for BMF. The levels of substitution of corn with BMF did not affect (P> 0.05) the relative weights of the carcass, bursa, spleen, heart, gizzard or liver, nor the relative weight or length of the small intestine. The lower cost of feed per kg of weight gain was obtained with the diet containing 10% corn replacement with BMF, which resulted in a higher gross margin in relation to food. The replacement of corn with BMF in diets for broilers from one to 21 days of age proved to be technically feasible in 10%.
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