Abstract
ABSTRACT The objective of this study was to determine prediction equations to estimate the nitrogen-corrected apparent metabolizable energy (AMEn) values of animal meals used in broiler diets through meta-analysis. A bibliographic review was undertaken with studies conducted in Brazil from 2000 to 2016 to catalogue information on AMEn values and the following chemical elements in the composition of the feedstuffs: crude protein (CP), ether extract (EE), gross energy (GE), mineral matter (MM), calcium (Ca), and phosphorus (P). Groups were also [...]
Highlights
Slaughterhouse byproducts like poultry offal meal and meat and bone meal are dietary sources of protein and phosphorus that can substitute costly ingredients such as soybean meal and dicalcium phosphate
The objective of this study was to develop equations to predict the apparent metabolizable energy (AMEn) content of poultry offal meal (POM) and meat and bone meal (MBM) through a meta-analysis of information on the chemical composition of these ingredients obtained by various authors and published in scientific papers
The average crude protein content in the samples of POM (634.6 g kg−1) (Table 1) showed a visible variability in mineral content, in which the mineral matter (MM), Ca, and P percentages had the highest coefficients of variation: 25.73, 24.56, and
Summary
Slaughterhouse byproducts like poultry offal meal and meat and bone meal are dietary sources of protein and phosphorus that can substitute costly ingredients such as soybean meal and dicalcium phosphate. This replacement addresses environmental concerns, as it represents a proper destination for the waste generated by slaughterhouses. Determining the AMEn content of feedstuffs involves the use of metabolic trials, which are costly and time-demanding. In this regard, feed composition tables are commonly consulted to obtain the energy values of the ingredients used in diets with greater practicality. Several factors can affect the values in those tables, e.g., the chemical composition of those feedstuffs, the age of birds, and the methodology applied to determine the energy value
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