| Registro completo |
| Provedor de dados: |
R. Bras. Zootec.
|
| País: |
Brazil
|
| Título: |
Digestible tryptophan requirements for broilers from 22 to 42 days old
|
| Autores: |
Duarte,Karina Ferreira
Junqueira,Otto Mack
Filardi,Rosemeire da Silva
Siqueira,Jefferson Costa de
Puzotti,Maíra Mangili
Garcia,Edivaldo Antônio
Molino,Andrea de Britto
Laurentiz,Antonio Carlos de
|
| Data: |
2013-10-01
|
| Ano: |
2013
|
| Palavras-chave: |
Digestible amino acids
Ideal protein
Performance
Regression analysis
|
| Resumo: |
The objective of this experiment was to establish different criteria to evaluate the requirements of digestible tryptophan for broilers from 22 to 42 d of age, using different regression models (quadratic, exponential and Linear Response Plateau) and in case of statistical significance the comparison of means by Duncan test at 5% probability was also adopted. A total of 1,920 Cobb 500 male broilers were distributed in a completely randomized experimental design, with 6 treatments (6 digestible tryptophan levels: 0.1395, 0.1610, 0.1825, 0.2040, 0.2255 and 0.2470%) and 8 replications containing 40 broilers each. Performance and carcass characteristics were evaluated. The level of 0.2255% of digestible tryptophan numerically improves feed conversion, and the 0.1919% estimated by the quadratic equation significantly improves carcass yield.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006
|
| Editor: |
Sociedade Brasileira de Zootecnia
|
| Relação: |
10.1590/S1516-35982013001000006
|
| Formato: |
text/html
|
| Fonte: |
Revista Brasileira de Zootecnia v.42 n.10 2013
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
