Repositório Digital

A- A A+

The impact of organic and inorganic selenium on the immune system of growing broilers submitted to immune stimulation and heat stress

.

The impact of organic and inorganic selenium on the immune system of growing broilers submitted to immune stimulation and heat stress

Mostrar registro completo

Estatísticas

Título The impact of organic and inorganic selenium on the immune system of growing broilers submitted to immune stimulation and heat stress
Autor Silva, Isabel Cristina Mello da
Ribeiro, Andrea Machado Leal
Canal, Cláudio Wageck
Trevizan, Luciano
Macagnan, Marisa
Gonçalves, Thomas Aguiar
Hlavac, Nicole Regina Capacchi
Almeida, Laura Lopes de
Pereira, Rosecler Alves
Abstract One to 42-d-old (432) female broilers were fed different levels of inorganic selenium (ISe) and organic selenium (OSe), according to the following treatments: (1) 0.3 mg ISe; (2) 0.3 mg ISe + 0.2 mg OSe; (3) 0.5 mg ISe and (4) 0.3 mg OSe/ kg of feed. All birds were vaccinated against infectious bursal disease (IBD) at 19d of age and three birds/replicate (R) were inoculated with sheep red blood cells (SRBC) at 32d. Three other birds/R received Freund’s adjuvant at 37d and avian tuberculin (AT) in the wattle at 47d of age. All birds were submitted to heat stress after 21d. Performance parameters, bursa and spleen weights, lymphocyte bursa depletion, antibody (Ab) production against IBD and SRBC, hematocrit, leukocytes, heterophil/lymphocyte ratio (H/L), and cellular reaction to AT were evaluated. The contrast analysis showed that OSe has improved feed intake (FI) between day 1 and 42 (p<0.10). Birds fed ISe presented worse H/L ratio (p<0.10), but higher Ab titers against IBD (p<0.04) and SRBC (p<0.05) than birds fed OSe, but OSe supplemented birds showed lower lymphocyte depletion scores in the bursa. The higher FI promoted by OSe may be beneficial when rearing broilers in hot weather. The use of ISe induced higher humoral immune response.
Contido em Revista brasileira de ciência avícola= Brazilian journal of poultry science. Campinas, SP. Vol. 12, n. 4 (out.-dez. 2010), p. 247-254
Assunto Frango de corte
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/29516
Arquivos Descrição Formato
000772867.pdf (497.4Kb) Texto completo Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.