Humoral immunological response in broilers vaccinated against newcastle disease and supplemented with dietary zinc and vitamin E
Título del documento: Humoral immunological response in broilers vaccinated against newcastle disease and supplemented with dietary zinc and vitamin E
Revista: Revista brasileira de ciencia avicola
Base de datos: PERIÓDICA
Número de sistema: 000279352
ISSN: 1516-635X
Autores: 1

2
Instituciones: 1Instituto Biologico, Centro Avancado de Pesquisa Tecnologica do Agronegocio Avicola de Descalvado, Descalvado, Sao Paulo. Brasil
2Universidade de Sao Paulo, Faculdade de Medicina Veterinaria e Zootecnia, Botucatu, Sao Paulo. Brasil
Año:
Periodo: Abr-Jun
Volumen: 8
Número: 2
Paginación: 99-103
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Experimental
Resumen en inglés The humoral immune response of broilers fed diets supplemented with Zinc (Zn) (0, 40, and 400mg/kg) and vitamin E (0, 12, and 120mg/kg), separately or combined, was evaluated. A completely randomized design was used according to a 3x3 factorial arrangement, with nine treatments and four repetitions per treatment. Sexed birds (n=1440) were distributed in 36 boxes with 40 chicks each and reared until 41 days of age. Vaccination against Newcastle Disease (ND) was performed when birds were 14 days old. ELISA and HI tests were used to assess antibody levels before vaccination and at 28, 35 and 41 days of age. The results were analyzed using Proc Mixed from SAS. The interaction between the highest dietary levels of Zn and vitamin E resulted in higher antibody levels in ELISA at 14, 28, 35 and 41 days of age. Increasing levels of Zn and vitamin E supplemented separately in the diets provided greater levels of hemagglutinating antibodies in HI at 14, 28, 35 and 41 days old. The interaction between the highest levels of Zn and vitamin E resulted in greater antibody levels at 41 days of age
Disciplinas: Medicina veterinaria y zootecnia
Palabras clave: Aves de corral,
Nutrición animal,
Pollos de engorda,
Suplementación,
Zinc,
Vitamina E,
Inmunología,
Virus
Keyword: Veterinary medicine and animal husbandry,
Animal nutrition,
Poultry,
Broilers,
Supplementation,
Zinc,
Vitamin E,
Immunology,
Virus
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