Evaluation of potential immunostimulant of the Carboxymethyl-glucan from Saccharomyces cerevisiae in poultry (Gallus domesticus)

Fernanda Patrícia Brito Darpossolo, Leonardo Raffa Quintana, Marciane Magnani, Alexandre Oba, Emerson José Venâncio, Raul Jorge Hernan Castro-Goméz

Abstract


The carboxymethylglucan (CMG) is a soluble molecule, composed of glucopyranosyl linked by ?(1-3) e ?(1-6), which can activate the immune system of the host. The purpose of this study was evaluate the productive and immunological characteristics of 192 poultry (Gallus domesticus) COBB line which received feds containing 0%, 0,025%, 0,050% e 0,075% of CMG from Saccharomyces cerevisiae added in corn flour. All poultry were immunized against Newcastle disease and at each treatment 3 poultries randomly chosen received CMG intramuscular at 3, 7 and 14 days. It was evaluated the animal performance, development of the bursa of Fabricius, histological slides of the small intestine, counts of  phagocytes cells in blood and levels of antibodies in serum. The results showed difference in weight gain and consumption of feed to poultry that consumed CMG at 1 to 21 days. Fabricius bursa relative weight increased in poultry supplemented with 0,025 e 0,050% of CMG. The phagocytic cells number and total levels of antibodies found in poultry at 21 days were higher in those that received CMG in the diet. For the animals that received intramuscular CMG was observed increase of antibodies specific to Newcastle.


Keywords


?-glucan; Broiler chicken; Immunomodulatory activities; Yeasts



DOI: http://dx.doi.org/10.5433/1679-0359.2010v31n1p231

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional