Corn and soybean meal metabolizable energy with the addition of exogenous enzymes for poultry

Two metabolism assays were carried out to determine corn and soybean meal metabolizable energy when enzymes were added. In the first trial, 35 cockerels per studied feedstuff (corn and soybean meal) were distributed in a completely randomized experimental design with four treatments of seven replica...

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Bibliographic Details
Published in:	Revista brasileira de ciência avícola Vol. 11; no. 1; pp. 51 - 55
Main Authors:	Dourado, LRB(Universidade Federal do Piauí), Sakomura, NK(UNESP Faculdade de Ciências Agrárias and Veterinárias Departamento de Zootecnia), Barbosa, NAA(UNESP Faculdade de Ciências Agrárias and Veterinárias Departamento de Zootecnia), Bonato, MA(UNESP Faculdade de Ciências Agrárias and Veterinárias Departamento de Zootecnia), Kawuauchi, IM(UNESP Faculdade de Ciências Agrárias and Veterinárias Departamento de Zootecnia), Fernandes, JBK(UNESP Centro de Aqüicultura), Costa, FGP(Universidade Federal da Paraíba)
Format:	Journal Article
Language:	English
Published:	Fundação APINCO de Ciência e Tecnologia Avícolas 01-03-2009
Subjects:	Amylase forced feeding phytase protease xylanase
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Summary:	Two metabolism assays were carried out to determine corn and soybean meal metabolizable energy when enzymes were added. In the first trial, 35 cockerels per studied feedstuff (corn and soybean meal) were distributed in a completely randomized experimental design with four treatments of seven replicates of one bird each. The evaluated treatments were: ingredient (corn and soybean meal) with no enzyme addition, with the addition of an enzyme complex (xylanase, amylase, protease - XAP), xylanase, or phytase. Precise feeding method was used to determine true metabolizable energy corrected for nitrogen balance (TMEn). The use of enzymes did not result in any differences (p>0.05) in soybean meal TMEn, but phytase improved corn TMEn in 2.3% (p=0.004). In the second trial, 280 seven-day-old broiler chicks were distributed in a completely randomized experimental design with seven treatments of five replicates of eight birds each. Treatments consisted of corn with no enzyme addition or with the addition of amylase, xylanase, phytase, XAP complex, XAP+phytase combination, or xylanase/ pectinase/β-glucanase complex (XPBG). Corn was supplemented with macro and trace minerals. Total excreta collection was used to determine apparent metabolizable energy corrected for nitrogen balance (AMEn). Differences were observed (p=0.08) in AMEn and dry matter metabolizability coefficient (p=0.03). The combination of the XAP complex with phytase promoted a 2.11% increase in corn AMEn values, and the remaining enzymes allowed increased between 0.86% and 1.66%.
Bibliography:	10.1590/S1516-635X2009000100008 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100008
ISSN:	1516-635X 1516-635X 1806-9061
DOI:	10.1590/S1516-635X2009000100008