Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/18884
Tipo do documento: Artigo
Título: Ideal digestible isoleucine: digestible lysine ratio in diets for laying hens aged 24-40 weeks
Autor: Rocha, Tatiana Cristina da
Donzele, Juarez Lopes
Gomes, Paulo Cezar
Mello, Heloisa Helena de Carvalho
Troni, Allan Reis
Viana, Gabriel da Silva
Abstract: Two hundred fifty-twoHy-LineW36layinghenswereallottedinarandomizedblockdesignwith6treatments, 7 replicates and 6 hens per experimental unit in order to determine the ideal digestible isoleucine:digestible lysine (Ile:Lys) ratio for laying hens aged 24-40 weeks. Experimental diets contained 5.92, 6.33, 6.73, 7.14, 7.54 and 7.95 g/kg of digestible isoleucine, resulting in different Ile:Lys ratios (0.73:1, 0.78:1, 0.83:1, 0.88:1, 0.93:1 and 0.98:1). Experimental diets were isonitrogenous, with different dietary contents of glutamic acid, and made isocaloric by adjusting the levels of cornstarch. All essential amino acids were provided proportionally to digestible lysine. Feed intake, egg production, egg weight, egg mass, feed conversion ratio per egg mass, feed conversion ratio per dozen eggs, albumen, yolk and eggshell content were assessed. Feed intake, egg production, egg mass and feed conversion ratio were influencedbyIle:Lysratiosquadratically.Theeggweightwas not affected by Ile:Lys ratio. No differences were observed in the egg quality according to Ile:Lys ratios. The data indicates that the optimum digestible isoleucine:digestible lysine ratio for laying hens aged 24-40 week is 0.84:1, corresponding to the consumption of 681 mg of isoleucine and 811 mg of lysine/hen day−1.
Palavras-chave: Digestible amino acid
Egg mass
Egg production
Protein
País: Brasil
Unidade acadêmica: Escola de Medicina Veterinária e Zootecnia - EVZ (RG)
Citação: ROCHA, Tatiana Cristina da et al. Ideal digestible isoleucine: digestible lysine ratio in diets for laying hens aged 24-40 weeks. Revista Brasileira de Zootecnia, Viçosa, v. 42, n. 11, p. 780-784, 2013.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1590/S1516-35982013001100003
Identificador do documento: 10.1590/S1516-35982013001100003
URI: http://repositorio.bc.ufg.br/handle/ri/18884
Data de publicação: 2013
Aparece nas coleções:EVZ - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
Artigo - Tatiana Cristina da Rocha - 2013.pdf289,61 kBAdobe PDFThumbnail
Baixar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons