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Título: | Digestible tryptophan requirements for broilers from 22 to 42 days old |
Autor(es): | 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 |
Palavras-chave: | Digestible amino acids Ideal protein Performance Regression analysis |
Data do documento: | 2013 |
Editor: | UFV |
Citação: | DUARTE, K. F. et al. Digestible tryptophan requirements for broilers from 22 to 42 days old. R. Bras. Zootec., Viçosa, v. 42, n.10, p.728-733, 2013. http://dx.doi.org/10.1590/S1516-35982013001000006 |
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. |
URI: | http://hdl.handle.net/123456789/756 |
ISSN: | 1806-9290 |
Aparece nas coleções: | Artigos - Zootecnia |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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Digestible tryptophan requirements for broilers from 22 to 42 days old.pdf | Artigo | 319,78 kB | Adobe PDF | Visualizar/Abrir |
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