Maintenance and weight gain in crude protein and metabolizable energy requirements of japanese quails (Coturnix coturnix japonica) from 15 to 32 days of age

Revista Brasileira de Zootecnia

Costa, Fernando Guilherme Perazzo⁴  Ribeiro, Marcelo Luís Gomes³  Dutra Júnior, Wilson Moreira¹  Jordão Filho, José⁴  Rocha, Maria do Rosário de Fontes²  Melo, Djair Alves de²  Silva, Marinalva Barbosa da⁴  Andrade, Iremar Silva²  Silva, Edson Lindolfo da⁴  Silva, José Humberto Vilar da³ 

[1] UFRPE, Recife;UFPB;UFPB, Bananeiras;UFPB, Areia

关键词: energy;    growth;    nutrient accretion;    crude protein    IntroduçãoModelos de predição podem se tornar ferramentas importantes no planejamento da alimentação e nutrição de codornas;    permitindo estimar o consumo de ração;    simular tratamentos;    compor dietas e predizer as respostas de desempenho;    como peso médio e necessidades nutricionais do plantel;    em diferentes estádios do desenvolvimento biológico das aves (Silva;    2004);   

DOI  :  10.1590/S1516-35982004000500014

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

An experiment was carried out to estimate dietary crude protein and energy requirements of 128 females of Japanese quails from 15 to 32 days of age, by the factorial method. A completely randomized design with four treatments with four replicates of eight birds was used. The treatments were: T1 = basal diet (BD) with 24.1% CP and 2,900 kcal AMEn ad libitum, T2 = 80%, T3 = 60% and T4 = 40% of T1 (close to maintenance). In the beginning of the experimental phase, four groups of 15 quails were slaughtered by cervical displacement. Gain requirements were obtained from twelve groups of 15 quails, reared separately and fed ad libitum, therefore, four groups of fifteen birds were slaughtered at 22, 29 and 32 days of age. At the final of the experiment, all birds from pens were slaughtered to estimate the requirements of maintenance by the comparative slaughter methodology. The prediction models to estimate daily requirements of CP and AMEn for Japanese quails maintenance and gain from 15 to 32 days of age were, respectively: CP (g/bird/d) = 4.752.W.75 + 0.865.G and AMEn (kcal/bird/d) = 91.480.W.75 + 8.86.G, where CP is crude protein, W is live weight (kg), G is weight gain and AMEn is apparent metabolizable energy nitrogen-corrected (kcal).

【 授权许可】

CC BY-NC