| Registro completo |
| Provedor de dados: |
Ciência Rural
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| País: |
Brazil
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| Título: |
Feeding different levels of vitamin E and selenium has no effect on serum immunoglobulin Y (IgY) production by layers vaccinated against Escherichia coli and avian encephalomyelitis virus
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| Autores: |
Kindlein,Giselle
Ribeiro,Andréa Machado Leal
Canal,Cláudio Wageck
Vieira,Maitê de Moraes
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| Data: |
2007-10-01
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| Ano: |
2007
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| Palavras-chave: |
Avian encephalomyelitis
Escherichia coli
Immunoglobulin
Selenium
Vitamin E
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| Resumo: |
The effects of vitamin E and selenium (Se) supplementation on the immunity of hens vaccinated against a mixture of six swine-pathogenic Escherichia coli (EC) and avian encephalomyelitis virus (AEV) were studied. Antibody production (AbP) was evaluated in ninety 49 to 57-week-old H&N Nick Chick hens fed diets containing 14IU Vitamin E kg-1 (basal diet), 27, 59, 111, or 111IU vitamin E kg-1 + 0.56ppm Se supplementation. At 51 wks of age, half of the hens were vaccinated against EC, and all birds were vaccinated against AEV. At 53-weeks of age, the birds received a second dose of EC vaccine. Blood samples were collected weekly and serum was analyzed by ELISA for anti-EC IgY and was expressed as optical density (OD). Vaccinated hens had higher serum OD than the non-vaccinated hens (P<FONT FACE=Symbol>£</FONT>0.05). Vaccinated hens fed 27 and 59IU of vitamin E/kg had a higher (P<0.05) serum OD than hens fed 111IU + Se. Neither EC nor AEV seem to be appropriate models for the study of the influence of micronutrients on immune responsiveness of older hens.
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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=S0103-84782007000500024
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/S0103-84782007000500024
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.37 n.5 2007
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| Direitos: |
info:eu-repo/semantics/openAccess
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