| Registro completo |
| Provedor de dados: |
Rev. Bras. Ciênc. Avic.
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| País: |
Brazil
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| Título: |
Effect of the calcium level and limestone particle size on the performance of semi-heavy layers in the second cycle of egg production
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| Autores: |
Pizzolante,CC
Garcia,EA
Laganá,C
Saldanha,ESPB
Deodato,AP
Faitarone,ABG
Scherer,MR
Batista,L
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| Data: |
2006-09-01
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| Ano: |
2006
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| Palavras-chave: |
Calcium
Laying hens
Limestone
Particle size
Performance
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| Resumo: |
An experiment was carried out at the Research and Development Unit of Brotas aiming at evaluating dietary calcium level and limestone particle size on the production performance of commercial (Hy-Line Brown) layers in the second lay cycle. Experiment duration was 112 days. A total number of 288 hens, with 83 weeks of age in the beginning of the experiment, were used in a completely randomized experimental design in a factorial arrangement of 2x3, with two calcium levels (3.5 and 4.0%) and three limestone particle size compositions: 100% fine limestone (FL), 30% coarse limestone (CL) + 70% fine limestone (FL), and 50% (CL) + 50% (FL), with six replicates of eight birds each. Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion ratio (kg/dz and kg/kg), mortality (%), and egg loss (%) were evaluated. The analysis of variance did not detect significant differences (p>0.05) among treatments on any of the evaluated performance parameters. It was concluded that the tested calcium levels and limestone particle composition did not influence the performance of semi-heavy layers in second production cycle.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300006
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| Editor: |
Fundação APINCO de Ciência e Tecnologia Avícolas
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| Relação: |
10.1590/S1516-635X2006000300006
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Poultry Science v.8 n.3 2006
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| Direitos: |
info:eu-repo/semantics/openAccess
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