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In order to investigate the Aflatoxin B₁ (AFB₁) removal ability of Brevibacillus laterosporus (Bl), 125 male Japanese quails aged 21-day-old were divided into 5 experimental groups with 5 replicates of 5 birds each. The experimental groups were control (basal diet), Bl (basal diet+10⁸ cfu Bl mL^-1), AFB₁ (basal diet+2.5 mg AFB₁ kg^-1), AFB₁+Bl (basal diet+2.5 mg AFB₁ kg^-1 and 10⁸ cfu Bl mL^-1), and AFB₁+Improved Milbond-TX^® (basal diet+2.5 mg AFB₁ and 2.5 g Improved Milbond-TX^® kg^-1). The AFB₁ decreased hematocrit (P= 0.003), red blood cells (P< 0.001), and white blood cells (P= 0.012) compared to the control while Bl probiotic improved those parameters. The highest relative liver and heart weight and lowest foam production and relative weight of bursa of Fabricius were observed in AFB₁ group (P< 0.05). However, the relative weight of bursa of Fabricius and cloacal gland of birds fed Bl were similar to those in the control group. The low oxidation stability of meat samples resulting from the use of AFB₁ improved due to use of Bl probiotic (P< 0.001). The ileal population of Escherichia coli increased in AFB₁ group while the lactic acid bacteria decreased. This condition was reversed due to administration of Bl probiotic (P< 0.001). This study clearly showed that indigenous Bl probiotic could be effectively used to lessen the negative effects of AFB₁ on meat quality and microbial ecosystem of growing quail chicks.

Keywords: Aflatoxicosis, Gut flora, Meat quality, Quail Spore former probioitcs.

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