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Revista Brasileira de Zootecnia
On-line version ISSN 1806-9290
BRUGALLI, Irineu et al. Effect of the particle size and the substitution level on the energy values of meat and bone meal for broiler chicks. R. Bras. Zootec. [online]. 1999, vol.28, n.4, pp.753-757. ISSN 1806-9290. http://dx.doi.org/10.1590/S1516-35981999000400014.
The objective of this work was to determine the apparent metabolizable energy (AME) and nitrogen-corrected apparent metabolizable energy (AMEn) of meat and bone meal (MBM) with different particle sizes (coarse, medium and fine), in two levels of substitution (20 and 40%) for broiler chicks. Two hundred and eighty broiler chicks with 15 days of age were allotted to a completely randomized design, with seven treatments (six treatments with meat and bone meal and a reference diet), four replicates and ten birds per experimental unit. The AME mean values for the 20 and 40% of substitution were 2.60 and 2.27 and the EMAn 2.50 and 2.14 Kcal/g DM, respectively. The results, considering coarse, medium and fine particle sizes of the MBM, were 2.13, 2.65 and 2.53 kcal/g DM for AME, and 2.03, 2.56 and 2.37 kcal/g DM to AMEn, respectively.
Keywords : apparent metabolizable energy; meat and bone meal; broiler chicks; particle size.