| Registro completo |
| Provedor de dados: |
Animal Sciences
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| País: |
Brazil
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| Título: |
Digestible lysine levels for brown layers
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| Autores: |
Souza, Henrique Baltazar de
Faria, Douglas Emygdio de
Caetano, Vinicius Camargo
Santos, Andréa Luciana dos
Araújo, Raquel Bighetti
Sakamoto, Márcia Izumi
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| Data: |
2014-09-24
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| Ano: |
2014
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| Palavras-chave: |
Digestible amino acids
Egg quality
Performance
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| Resumo: |
This study was carried out to evaluate the effects of different digestible dietary lysine levels on performance and egg quality characteristics, from 25 to 41 weeks of age. One hundred twenty Hy-Line Brown layers were randomly distributed in five treatments with six replications of four birds each, totaling 30 experimental units. Experimental diets were based on corn and soybean meal, were isocaloric and isonutrient, with differences only in lysine levels (0.70, 0.75, 0.80, 0.85, and 0.90%). The study evaluated feed intake, lysine intake, energy consumption, egg production, egg weight, egg mass, and feed conversion. Internal egg quality was evaluated by Haugh unit, the percentages of yolk and albumen percentage, while external quality was measured by specific gravity, eggshell thickness and shell percentage. It was concluded that the level of 0.70% of digestible lysine or the intake of 708 mg bird-1 day-1 for Hy-Line Brown layers from 25 to 41 weeks of age can be enough to express the genetic potential.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24331
10.4025/actascianimsci.v36i4.24331
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| Editor: |
Editora da Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24331/pdf_52
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| Formato: |
application/pdf
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| Fonte: |
Acta Scientiarum. Animal Sciences; v. 36, n. 4 (2014); 369-372
Acta Scientiarum. Animal Sciences; v. 36, n. 4 (2014); 369-372
1807-8672
1806-2636
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