| Registro completo |
| Provedor de dados: |
Rev. Bras. Ciênc. Avic.
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| País: |
Brazil
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| Título: |
Fat-Soluble Vitamin Supplementation Levels in Diets for Laying Hens from 28 to 44 Weeks of Age
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| Autores: |
Félix,DO
Silva,AS
Fialho,ATS
Oliveira,CJP
Brito,CO
Tavernari,FC
Ribeiro Jr,V
Rostagno,HS
Albino,LFT
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| Data: |
2020-01-01
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| Ano: |
2020
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| Palavras-chave: |
Egg weight
Performance
White eggs
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| Resumo: |
ABSTRACT This study aimed to examine the impact of levels of dietary supplementation with fat-soluble vitamins on the production performance and egg quality of laying hens. Three hundred Hy-Line White W-36 laying hens were evaluated from 28 to 44 weeks of age. The birds were allotted to one of six treatments in a randomized block design with 10 replicates with five birds each. Performance and egg quality parameters were evaluated in four 28-day periods. A corn and soybean meal-based basal diet was formulated so as to meet the nutritional requirements of the animals, with the exception of fat-soluble vitamins. The treatments consisted of dietary supplementation with 0%, 33.3%, 66.7%, 100.0%, 133.3% or 166.7% of fat-soluble vitamins (100% supplementation consisted of 7500 IU, 2000 IU, 10 IU and 1.8 mg of vitamins A, D3, E and K per kilogram of diet, respectively). Eggshell weight, shell thickness, shell strength, feed intake, egg weight, feed conversion per egg mass and feed conversion per dozen eggs showed a quadratic response (p≤0.05) to the treatments, whereas egg mass responded linearly. Optimal results were obtained at an average fat-soluble vitamin supplementation level of 109%, which corresponds to 8175 IU of vitamin A, 2180 IU of vitamin D3, 10.9 IU of vitamin E and 1.96 mg of vitamin K per kilogram of diet.
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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=S1516-635X2020000300300
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| Editor: |
Fundação APINCO de Ciência e Tecnologia Avícolas
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| Relação: |
10.1590/1806-9061-2019-1239
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Poultry Science v.22 n.3 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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