Data/hora: 17/06/2024 15:17:11

Provedor de dados: | 96
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
Fonte: | info:eu-repo/semantics/openAccess