Níveis de lisina digestível em rações para codornas japonesas em postura

• Autor(a) principal: Ribeiro, Cleverson Luís Nascimento
• Data de Publicação: 2011
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5689
• topic: Aminoácido digestível; Aminoácido total; Coturnix; Desempenho; Qualidade de ovo; Digestible amino acids; Total amino acid; Coturnix; Performance; Egg quality; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL

The experiment was conducted at the section of Aviculture of the Animal Science Department of the Federal University of Viçosa, which the object to estimate the requirement digestible lysine for laying Japanese quails during the production phase. It was used 336 female Japanese quails, with 207 days old. A complete randomized experimental design was used with six treatments, seven replicates and eight quails per experimental unit, lasting 84 days. The experimental diets were formulated from a basal diet using corn and soybean meal, with 2,800 kcal ME/Kg and 20.37% of crude protein, supplemented with six levels of LLysine HCL (0.000, 0.063, 0.127, 0.190, 0.253 and 0.317%), replacing the glutamic acid in protein equivalent to present 0.95, 1.00, 1.05, 1.10, 1.15 and 1.20% digestible lysine, remained the diets isoprotein and isocaloric. The following variables were avaluated: feed intake (g /quail /day), lysine intake (mg/quail/day), egg production (%), production of commercial eggs (%), egg weight (g), egg mass (g/quail/day), efficiency of lysine utilization for production of egg mass (g/g), feed conversion by egg mass (kg feed/kg eggs), feed conversion per dozen eggs (kg feed/dozen eggs), viability (%), final body weight (g), components of the egg (yolk, albúmen and shell (g%)), specific weight (g/cm³) and determination of nitrogen content (%). A significant effect was observed in the lysine intake (P<0.01), egg weight (P<0.01), egg mass (P<0.04), efficiency of lysine utilization for production of egg mass (P<0,01), feed conversion by egg mass (P<0.03), yolk weight (P<0.03), albumen weight (P<0.01) and specific weight (P<0.01). The others variables no significant effect (P>0.05). The estimated digestible lysine level in feed for Japanese quail in production was 1.12%, corresponding to the average daily intake of 272.23 mg of or 26.61 mg of digestible lysine/g of egg mass.