Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/42662
Título: Equações de predição para estimar os valores da EMAn de alimentos proteicos para aves utilizando a meta-análise
Título(s) alternativo(s): Prediction equations to estimate the AMEn values of protein feedstuffs for poultry utilizing meta-analysis
Palavras-chave: Composição química
Farelo de soja
Fontes proteicas
Subprodutos da soja
Energia metabolizável aparente
Chemical composition
Protein sources
Soybean byproducts
Soybean meal
Apparent metabolizable energy
Data do documento: Out-2011
Editor: Sociedade Brasileira de Zootecnia (SBZ)
Citação: NASCIMENTO, G. A. J. do et al. Equações de predição para estimar os valores da EMAn de alimentos proteicos para aves utilizando a meta-análise. Revista Brasileira de Zootecnia, Viçosa, MG, v. 40, n. 10, p. 2172-2177, out. 2011. DOI: 10.1590/S1516-35982011001000016.
Resumo: This study was accomplished aiming to obtain prediction equations to estimate the values of corrected apparent metabolizable energy (AMEn) of the protein feedstuffs usually used in broiler rations, through the meta-analysis principle. Literature review of the studies realized in Brazil was performed to catalog information about values of AMEn and chemical composition of the feedstuffs reported (CP = crude protein; EE = ether extract; CF = crude fiber; NDF = neutral detergent fiber; ADF = acid detergent fiber). Effects of sex at three levels (male; female and mixed); age at four levels (1st and 2nd weeks of life; 3rd and 4th weeks; 5th and 6th weeks; above or indefinite) and the methodology employed in the metabolism assay at two levels (total collection of excreta - CT and forced fed plus + CT) were considered. The data were analyzed in a 3 × 4 × 2 factorial arrangement, capable of amounting up to 24 groups. The Stepwise procedure was adopted for selection of variables, and the Proc Reg of the (SAS), to fit the multiple linear regression model. The equation obtained which best fitted was AMEn = 2707.71 + 58.63EE - 16.06NDF (R2 = 0.81), with the EE as the most important variable, concerning the possible variations in the energy contents of protein feedstuffs.
URI: http://repositorio.ufla.br/jspui/handle/1/42662
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