Effect of Spirulina on growth, immunity, gut bacterial load and histopathology of broiler birds

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  • Kamdev Sethy
  • ARPITA KHADANGA Odisha University of Agriculture and Technology, Bhubaneswar, Odisha 751 003 India
  • K SETHY Odisha University of Agriculture and Technology, Bhubaneswar, Odisha 751 003 India
  • S M SAMANTARAY Odisha University of Agriculture and Technology, Bhubaneswar, Odisha 751 003 India
  • P RAY Odisha University of Agriculture and Technology, Bhubaneswar, Odisha 751 003 India
  • N PANDA CVSc&AH, OUAT, Bhubaneswar, Odisha
  • S K MISHRA CVSc&AH, OUAT, Bhubaneswar, Odisha
  • M NAIK CVSc&AH, OUAT, Bhubaneswar, Odisha
  • S TRIPATHY CVSc&AH, OUAT, Bhubaneswar, Odisha



Broilers, Growth, Gut microbes, Histopathology, Immunity, Spirulina


This study was carried out to evaluate the effects of Spirulina on growth, immunity, gut microbiome, and important organ histopathology in Vencobb broilers. 160 day-old chicks were randomly assigned to four diets. T0: basal diet, T1: basal diet + Spirulina (0.50% of basal diet), T2: basal diet + Spirulina (1.0% of basal diet), T3: basal diet + Spirulina (1.50% of basal diet). The experimental period was 35 days. Body weight change was measured at weekly intervals. Humoral immunity, cellular immunity, lymphoid organ mass, histopathology, intestinal bacterial load and intestinal morphology were measured on the 35thday of the experimental feeding period. Body weights were significantly higher in all treated birds than in control. Lymphatic organ weights, HI titers and CBH responses in the various treatment groups were significantly higher than those in the control group. The total bacteria (log10
cfu/ml), Escherichia coli and Salmonella counts in the intestinal contents were significantly lower in the Spirulina treated group than in the control group, and the intestinal Lactobacillus count was higher in the treated birds than in the control group. The villi length and width of the treated birds were significantly greater than those of the control group. Histopathology studies have shown that Spirulina @ 1.5% of the basal diet have no detrimental effect on the bird’s liver and kidneys. It can be concluded that adding 1.50% Spirulina to the diet of Vencobb broilers improves growth, immunity and reduces gut microbial load.


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Author Biography

  • Kamdev Sethy

    Department of Animal Nutrition



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How to Cite

Sethy, K., KHADANGA, A., SETHY, K., SAMANTARAY, S. M., RAY, P., PANDA, N., MISHRA, S. K., NAIK, M., & TRIPATHY, S. (2023). Effect of Spirulina on growth, immunity, gut bacterial load and histopathology of broiler birds. The Indian Journal of Animal Sciences, 93(8), 815–820. https://doi.org/10.56093/ijans.v93i8.133057