Influence of probiotic supplementation on immune response in broilers raised under hot climate

British Poultry Science
M M FathiO K Abou-Emera

Abstract

1. The objective of the study was to evaluate the potential effects of dietary probiotic supplementation and stocking density and their interaction on growth performance, humoral and cellular immune responses of broiler chickens raised under hot climate conditions. 2. A total of 1800 1-d-old unsexed broiler chicks (Ross 308) were allocated in a completely randomised 3 × 2 factorial design, with three concentrations of dietary probiotic (0, 200 and 400 mg/kg) containing 4 × 10(9) cfu/g of Bacillus subtilis and two stocking densities (12 or 18 birds/m(2)) in a total of 6 treatment subgroups. 3. Dietary probiotic and stocking density had no significant effect on live body weight, feed consumption and feed conversion ratio. 4. Dietary probiotic supplementation had a positive effect on serum immunoglobulin M (IgM) and cell-mediated immunity when compared to the control at 6 weeks of age, whereas serum immunoglobulin A (IgA) and immunoglobulin Y (IgY) were improved, but not significantly so. Dietary probiotic and stocking density had no effect on relative weights of the bursa of Fabricius and spleen. 5. Dietary probiotic supplementation had a positive significant effect on serum IgM concentration and cell-mediated immunity without pe...Continue Reading

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Citations

Jan 24, 2019·Probiotics and Antimicrobial Proteins·Maria S MazankoMichael L Chikindas
Feb 10, 2020·International Journal of Biometeorology·Mohammad Javad JafariMina Jafari
Jan 31, 2020·Frontiers in Microbiology·Denise R RodriguesLisa R Bielke
Jan 9, 2021·Frontiers in Microbiology·Wenjun DengSteven C Ricke
May 22, 2021·Journal of Thermal Biology·Abdel-Moneim Eid Abdel-MoneimTarek A Ebeid

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