Relação metionina mais cistina com lisina em dietas para codornas japonesas em postura

• Autor(a) principal: Reis, Renata de Souza
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5624
• topic: Aminoácidos; Coturnix coturnix japonica; Desempenho; Proteína ideal; Qualidade de ovo; Aminoacid; Coturnix coturnix japonica; Performance; Ideal protein; Egg quality; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL::EXIGENCIAS NUTRICIONAIS DOS ANIMAIS

An experiment was conducted in the poultry sector of aviculture of the animal Science department of the Universidade Federal de Viçosa - UFV, aiming to establish the methionine plus cystine to lysine to Japanese quail in phase position. 480 female quails were used, with initial age of 65 days, distributed in a completely randomized blocks desing with six treatments, ten replicates and eight birds per experimental unit. Treatments consisted of a basal diet deficient in methionine plus cystine (0.65%), with 19.3% crude protein and 2800 kcal metabolizable energy/kg, supplemented with six levels of DL-Methionine 98% (0,116; 0,167; 0,218; 0,269; 0,320 e 0,371%), corresponding to the relationship methionine plus cystine to lysine of 0.65, 0.70, 0.75, 0.80, 0, 85 and 0.90, and the lysine set at 1.00%. The variables studied were: feed intake (g / bird / day), egg production per bird day (%), egg production per hen housed (%), production of commercial eggs (%), egg weight (g), egg mass (g / bird / day), feed conversion by egg mass (kg feed / kg egg), feed per dozen eggs (kg feed / dz of eggs), change in body weight (g), viability of the poultry (%), weight of egg components (yolk (g), albumen (g) and shell (g)), percentage of components of eggs (%) height and diameter of eggs (mm) and specific gravity (g/cm³). There was increasing linear effect for feed intake, diameter of eggs, weight of pods and percentage of egg yolk, while for percentage of bark was observed linear decreasing effect. For the parameter weight of the eggs the best adjustment of data was obtained using the Linear Response Plateau model (LRP). It was verified quadratic effect for egg mass, feed conversion by egg mass, egg production per bird days, egg productionper hen housed, weight of the yolk, the albumen weight and height of eggs. It was concluded that the relationship methionine plus cystine to lysine of 0.84 and the feed to a daily intake of 221.0 mg of this amino acid, corresponding to the.