Please use this identifier to cite or link to this item: https://repositorio.ufma.br/jspui/handle/123456789/756
Title: Digestible tryptophan requirements for broilers from 22 to 42 days old
Authors: 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
Keywords: Digestible amino acids
Ideal protein
Performance
Regression analysis
Issue Date: 2013
Publisher: UFV
Citation: 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
Abstract: 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
Appears in Collections:Artigos - Zootecnia

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