Avaliação de fontes de metionina e dietas com perfil de aminoácido total e digestível para codornas japonesas

Autor: Lucena, Patrícia Barbosa de Lacerda
Přispěvatelé: Silva, José Humberto Vilar da, Costa, Fernando Guilherme Perazzo, Givisiez, Patrícia Emília Naves
Jazyk: portugalština
Rok vydání: 2017
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Popis: The emergence of synthetic amino acid production has brought several advantages to poultry production systems, from performance till production costs. This has attracted the attention of researchers for the application of new methodologies for formulating feeds based on the specific needs of essential amino acids (EAA), among them the formulation of diets based on digestibility or in the future in the bioavailability of EAA. Thus, the objectives of this work were to evaluate the relative bioavailability (RB) of Methionine Hydroxy-Analog (DL-MHA) compared to DL-Methionine (DL-Met), and to compare diets formulating based on total versus digestible amino acids in the japanese quail (Coturnix coturnix japonica) feeding. This thesis was divided into two Chapters. In Chapter I, 550 female of japanese quails, distributed in a completely randomized experimental design, were used in a 2x5 + 1 factorial scheme, two methionine sources (DL-Met and DL-MHA) supplied in 5 levels (0, 29, 0.35, 0.41, 0.47 and 0.53%) plus a control diet, without inclusion of synthetic methionine sources, totaling 11 treatments, with five replicates of 10 birds per experimental unit. The control treatment consisted of an iso-energetic and isoprotein diet based on corn and soybean meal, without supplementation of methionine recommended for Japanese quails from 1 to 14 days of age and supplemented with DL-Met (99%) or DL-MHA (88%) in expense of glutamic acid. Weight gain (kg) and feed conversion (kg/kg) were assessed at 7 and 14 days of age. Analysis of variance was performed (P
Databáze: OpenAIRE
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