Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/45636
Título: Equações de predição para estimar valores da energia metabolizável de alimentos concentrados energéticos para aves utilizando meta-análise
Título(s) alternativo(s): Prediction equations to estimate metabolizable energy values of energetic concentrate feedstuffs for poultry by the meta-analysis process
Palavras-chave: Frango de corte
Energia metabolizável
FDA
FDN
Fibra em detergente ácido
Fibra em detergente neutro
Broiler
Metabolizable energy
NDF
ADF
Neutral detergent fiber (NDF)
Acid detergent fiber (ADF)
Data do documento: Fev-2011
Editor: Universidade Federal de Minas Gerais (UFMG), Escola de Veterinária
Citação: NASCIMENTO, G. A. J. et al. Equações de predição para estimar valores da energia metabolizável de alimentos concentrados energéticos para aves utilizando a meta-análise. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 63, n. 1, p. 222-230, Feb. 2011. DOI: 10.1590/S0102-09352011000100032.
Resumo: Prediction equations were obtained for the apparent metabolizable energy (EMAn) values of energetic feedstuffs used in broiler chicken diets by meta-analysis. A bibliographical review of the studies carried out in Brazil was performed to collect information concerning energy values and chemical composition (CP, EE, MM, CF, NDF, and ADF) of feedstuffs. The effects of gender (male, female and mixed), age (1st and 2nd week, 3rd and 4th week, 5th and 6th week, and older 6th weeks or indefinite), and the metabolism assay methodology (excrete total collection or forced fed + excrete total collection) were also considered, constituting a factorial scheme (3x4x2). The stepwise procedure was used to study the association among equation variables by their importance, and Proc Reg (SAS) was used to fit the multiple linear regression model. The equations which best estimated the EAMn of the energetic feedstuffs were AME = 4,371.18 - 26.48CP + 30.65EE - 126.93MM - 52.26CF - 25.14NDF + 24.40FDA (R2=0.81) and AME = 4,205.23 + 30.58EE - 130.35MM - 58.29CF - 28.31NDF + 16.71NDA (R2=0.81). NDF and ADF variables were important in the equations, influencing the feedstuffs energetic values.
URI: http://repositorio.ufla.br/jspui/handle/1/45636
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