Data/hora: 13/06/2024 02:20:46

Provedor de dados: | 2
País: | Brazil
Título: | Carbohydrase and phytase supplementation in diets for semi-heavy laying hens
Autores: | Geraldo, Adriano; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Gomes, Karina Rodrigues Aurora; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Fassani, Édison José; Universidade Federal de Lavras; Bertechini, Antonio Gilberto; Universidade Federal de Lavras; Simão, Sérgio Domingos; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Nogueira, Filipe Soares; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais.
Data: | 2014-07-23
Ano: | 2014
Palavras-chave: | 5.04.03.00-1 enzymes; Monogastrics; Nutrient availability; Performance; Egg quality.
Resumo: | This study was conducted in order to evaluate the association of phytase with an enzymatic complex comprised of carbohydrases (α-galactosidase, galactomannan, xylanase and β-glucanase) in nutrition reduction diets for semi-heavy laying hens and its effect on egg performance and egg quality. Four hundred Isa Brown laying hens with 42 to 57 weeks of age were distributed in an entirely random experiment with five treatments and 8 repetitions, during five production periods of 21 days. Variables studied: egg production, feed intake, mean egg weight, feed conversion, Haugh unit, percentage of yolk, egg white and albumen, yolk color, eggshell thickness and specific gravity. There was a significant interaction (p &amp;lt; 0.05) between treatments and experimental periods for feed intake. There were no significant effects (p &amp;gt; 0.05) of treatment on production, egg weight or internal and external egg quality. Treatment effects on feed conversion showed better values for hens fed with the control diet. The levels of nutrient reduction used in the diets with or without enzyme supplementation did not provide good results with regard to feed conversion and feed intake. However, they did not affect the other parameters for egg production and internal and external egg quality.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21952

10.4025/actascianimsci.v36i3.21952

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21952/pdf_40
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 36, n. 3 (2014); 285-290

Acta Scientiarum. Animal Sciences; v. 36, n. 3 (2014); 285-290

1807-8672

1806-2636

Fonte:

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