2010
DOI: 10.1590/s1516-35982010000800017
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Balanço de cálcio e fósforo e estudo dos níveis desses minerais em dietas para codornas japonesas (45 a 57 semanas de idade)

Abstract: RESUMO -Objetivou-se verificar o efeito de quatro níveis de cálcio (Ca) e de fósforo disponível (Pd) na dieta sobre o desempenho, a qualidade dos ovos e a excreção mineral em codornas japonesas durante o terço final do ciclo de produção. Utilizaram-se 384 codornas, com 313 dias de idade, distribuídas em delineamento inteiramente casualizado em esquema fatorial 4 × 2, composto de quatro níveis de cálcio (2,0; 2,5; 3,0 e 3,5%) e dois de fósforo disponível (0,15 e 0,35%), de modo que cada combinação foi avaliada … Show more

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Cited by 8 publications
(10 citation statements)
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References 11 publications
(12 reference statements)
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“…However, these requirements were obtained in studies evaluating quails at the beginning of the egg-production phase and during the peak of egg production (Costa et al 2011). Also, there are few studies about Ca and avP requirements for Japanese quails at end of production phase (Costa et al, 2010a;Costa et al, 2010b). Costa et al (2010a) determined a requirement of 22 g Ca/kg of egg production in Japanese quails immediately after the peak of egg production.…”
Section: Introductionmentioning
confidence: 99%
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“…However, these requirements were obtained in studies evaluating quails at the beginning of the egg-production phase and during the peak of egg production (Costa et al 2011). Also, there are few studies about Ca and avP requirements for Japanese quails at end of production phase (Costa et al, 2010a;Costa et al, 2010b). Costa et al (2010a) determined a requirement of 22 g Ca/kg of egg production in Japanese quails immediately after the peak of egg production.…”
Section: Introductionmentioning
confidence: 99%
“…Also, there are few studies about Ca and avP requirements for Japanese quails at end of production phase (Costa et al, 2010a;Costa et al, 2010b). Costa et al (2010a) determined a requirement of 22 g Ca/kg of egg production in Japanese quails immediately after the peak of egg production. However, those authors recommend a higher dietary Ca level (38 g/kg) for maximum eggshell thickness and eggshell percentage.…”
Section: Introductionmentioning
confidence: 99%
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“…El consumo diario de ración se incrementó de forma cuadrática (P=0,04) hasta el nivel de 2,75% de calcio, siendo el resultado inferior al constatado por Costa et al (2010) de 25,67 -27,59 g/día y por Vieira et al (2012) de 28,06 g/ave/día. Los resultados de consumo superan los valores determinados por Amoah et al, (2012) de 21,46 -23,47 g/día y el consumo encontrado por Talamas (2012) de 23,12 g/ave/día en promedio con niveles de 2,8; 3; 3,2 y 3,4% de calcio en la dieta, las diferencias en los resultados citados se pueden explicar por la fase de postura del ave, dado que corresponden a condiciones experimentales con aves de diferentes edades.…”
Section: Resultados Y Discusiónunclassified
“…La conversión alimenticia de docenas de huevo por kg de ración es próxima a la constatada por Talamás (2012) de 0,34, superando los datos reportados por Costa et al, (2010) de 2,77; 2,73; 2,63 y 2,65 para niveles de 2,0 2,5 3,0 3,5 respectivamente. Por otro lado, Amoah et al, (2010) y Brandão et al, (2007) obtuvieron mejor conversión alimenticia, que además, verificaron efecto cuadrático de los niveles de calcio para las variables masa de huevo y producción diaria de huevos.…”
Section: Resultados Y Discusiónunclassified