2007
DOI: 10.1590/s1516-35982007000100009
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Abstract: RESUMO -Foi conduzido um experimento para determinação da exigência nutricional de cálcio de 360 codornas japonesas fêmeas (peso médio inicial de 121,5 g), durante o período inicial de produção (56 a 171 dias de idade). As aves foram distribuídas em delineamento inteiramente casualizado, em esquema fatorial 6 x 4, com seis níveis de Ca na ração (1,6; 2,0; 2,4; 2,8; 3,2 e 3,6%) e quatro períodos experimentais de 28 dias. Cada tratamento foi constituído de seis repetições e a unidade experimental foi representad… Show more

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Cited by 30 publications
(31 citation statements)
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References 10 publications
(10 reference statements)
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“…The percentage of production was not affected (P > 0.05) by increasing levels of calcium. The lack of influence of the incorporation of increasing levels of calcium in the diet on egg production was also previously observed by several authors: Barreto et al (2007) who tested calcium levels (1.65%, 2.05%, 2.4%, 2.8%, 3.2%, and 3.6%) in 8-24-week-old Japanese quails and Silva (2011 ) that tested calcium levels (2.0%, 2.5%, 3.0%, and 3.5%) in 7-54-weekold Japanese quails. However, Luz (2002) evaluated the effect of increasing calcium levels (2.0%, 2.5%, 3.0%, and 3.5%) in 8-28-week-old quails and found that egg production increased linearly with increasing levels of calcium in the diet.…”
Section: Resultssupporting
confidence: 74%
See 1 more Smart Citation
“…The percentage of production was not affected (P > 0.05) by increasing levels of calcium. The lack of influence of the incorporation of increasing levels of calcium in the diet on egg production was also previously observed by several authors: Barreto et al (2007) who tested calcium levels (1.65%, 2.05%, 2.4%, 2.8%, 3.2%, and 3.6%) in 8-24-week-old Japanese quails and Silva (2011 ) that tested calcium levels (2.0%, 2.5%, 3.0%, and 3.5%) in 7-54-weekold Japanese quails. However, Luz (2002) evaluated the effect of increasing calcium levels (2.0%, 2.5%, 3.0%, and 3.5%) in 8-28-week-old quails and found that egg production increased linearly with increasing levels of calcium in the diet.…”
Section: Resultssupporting
confidence: 74%
“…This result corroborates the findings of Luz (2002) who reported improved feed conversion to egg mass with elevated calcium levels (2.0%, 2.5%, 3.0%, and 3.5%) in the diet of 8-28-week-old Japanese quails. Barreto et al (2007) evaluated the inclusion levels (1.6%, 2.0%, 2.4%, 2.8%, 3.2%, and 3.6%) in the diet of 8-24-weekold Japanese quails during the production phase and found that feed conversion to egg mass was improved as calcium levels increased. Conversely, they are not consistent with the results of Garcia et al (2000) who studied the nutritional requirements of calcium (2.5%, 3.0%, 3.5%, and 4.0%) and phosphorus in 10-week-old Japanese quails.…”
Section: Resultsmentioning
confidence: 99%
“…Calculations for the formulation of the diets were made on Super Crac 5.0 software, according to the nutritional requirements of Japanese layer quail described by the National Research Council (Nutrient...,1994), except for crude protein and calcium, which were based on recommendations of Oliveira et al (1999) and Barreto et al (2007), respectively. The apparent metabolizable energy of corn, sorghum, soybean meal, and refined soybean oil were adjusted for values determined by Moura et al (2010b).…”
Section: Methodsmentioning
confidence: 99%
“…As mesmas foram formuladas para atender as exigências nutricionais das codornas segundo as recomendações do NRC (1994), exceto para as exigências de metionina + cistina e lisina digestíveis, em que foram utilizadas aquelas verificadas por Pinto et al (2003a, b), respectivamente, e para cálcio, verificada por Barreto et al (2007). Os valores de composição dos alimentos utilizados foram aqueles apresentados por Rostagno et al (2005).…”
Section: Methodsunclassified