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Provedor de dados:  Ciência e Agrotecnologia
País:  Brazil
Título:  Metabolizable energy of corn hybrids for broiler chickens at different ages
Autores:  Kato,Reinaldo Kanji
Bertechini,Antonio Gilberto
Fassani,Edison José
Brito,Jerônimo Avito Gonçalves de
Castro,Solange de Faria
Data:  2011-12-01
Ano:  2011
Palavras-chave:  Energy content
Flint corn
Dent corn
Semi-dent corn
Soft corn
Resumo:  We determined the values of apparent metabolizable (AME), apparent corrected (AMEn), true (TME) and true corrected (TMEn) energy of six corn hybrids for broiler chickens in phases 1-7, 8-14, 15-21, 22-28, 29-35 and 36-42 day-old birds, using the substitution method (40%) of reference diet with the test ingredient. Ross-308 male chicks (1,134) were allotted to metabolism cages and the number of birds per experimental unit was adjusted to suit each bird's density stage in the cage, using six replicates. Simultaneously, birds continue to fast for the determination of metabolic and endogenous losses for each study phase. The birds received water and food ad libitum during the experimental period. The birds were maintained in metabolism cages for seven days, four days for adaptation to the cage and food, and three days for excreta collection. The corn energy values were significantly lower only in the pre-initial phase (1-7 days). Thus, broiler feed formulations of AMEn values for corn of 3563 kcal/kg DM for 1 to 7 days and 3778 kcal/kg DM from 7-day-old birds are recommended.The agronomic characteristics of the corn had no influence on the birds energy levels.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Editora da Universidade Federal de Lavras
Relação:  10.1590/S1413-70542011000600024
Formato:  text/html
Fonte:  Ciência e Agrotecnologia v.35 n.6 2011
Direitos:  info:eu-repo/semantics/openAccess

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