2017
DOI: 10.1590/1089-6891v18e-22100
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Abstract: ResumoObjetivou-se determinar a exigência de metionina + cistina total para frangas na fase inicial e verificar seu efeito sobre a fase de postura. Na primeira fase experimental, 720 aves (50% Lohmann LSL e 50% Lohmann Brown) com uma semana de idade foram distribuídas em delineamento experimental inteiramente casualizado, em esquema fatorial 5 x 2 (níveis de met + cis e linhagens), com quatro repetições e 18 aves por repetição. Os níveis de met + cis total estudados foram 0,536; 0,616; 0,696; 0,776; e 0,856 %.… Show more

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Cited by 3 publications
(4 citation statements)
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References 15 publications
(11 reference statements)
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“…The optimum digestible methionine+cystine value estimated by FCR is similar to the 0.750% recommended by the Dekalb White (2009) guide for the phase from one to six weeks of age, but bottom than the 0.859% described by Rostagno et al (2017).…”
Section: Resultssupporting
confidence: 72%
See 1 more Smart Citation
“…The optimum digestible methionine+cystine value estimated by FCR is similar to the 0.750% recommended by the Dekalb White (2009) guide for the phase from one to six weeks of age, but bottom than the 0.859% described by Rostagno et al (2017).…”
Section: Resultssupporting
confidence: 72%
“…In this sense, Rostagno et al (2017) have recently recommended 0.86% digestible methionine+cystine values for the starter phase (one to four weeks of age), and Dekalb White (2009) manual recommended levels of 0.75% digestible methionine+cystine for white-egg pullet layers from 1 to 5 weeks of age. D'Agostini et al 2017, in turn, recommended 0.70% digestible methionine+cystine in diets for pullets aged one to six weeks.…”
Section: Introductionmentioning
confidence: 99%
“…Agropecuaria, 22(1): e1921 DOI: https://doi.org/10.21930/rcta.vol22_num1_art:1921 a 0,34 % aumenta la producción, peso, masa y contenido del huevo, así como el consumo de alimento, y a su vez disminuye la conversión alimenticia. Sin embargo, la información disponible sobre los requerimientos nutricionales de metionina + cistina digerible en gallinas ponedoras comerciales ligeras y semipesadas es escasa (D'Agostini et al, 2017). Para estos animales, el ajuste en el nivel de proteína y de aminoácidos en la dieta es esencial, debido a la gran demanda de estos nutrientes para la síntesis del huevo, albumen y yema (Gambaro, 2014).…”
Section: Introductionunclassified
“…Success in the production phase of laying hens is associated with adequate performance and sexual maturity obtained during the growth phase. Thus, it is necessary to provide adequate nutrients which meet the requirements of the laying pullets, so that they can develop adequate body structure and reproductive tract formation, allowing greater productivity in this phase (Rezende et al, 2013;Bastos-Leite et al, 2016;D'Agostini et al, 2017).…”
Section: Introductionmentioning
confidence: 99%