Effects of Lactobacillus casei probiotics on growth performance, blood parameters and intestinal microbial flora in juvenile goldfish (Carassius auratus)

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Abstract:

Lactobacillus casei probiotic is one of the probiotics used in aquaculture industry. The aim of this study was to evaluate the effect of Lactobacillus casei probiotic on the growth performance, blood parameters, and intestinal microbial flora in goldfish (Carassius auratus) for 60 days. In this study, 180 fish with an average weight of 10.11± 0.16 g were randomly distributed into two treatments with three replicates (n= 30) including commercial diet (control treatment) and diet containing L. casei probiotics at 107 CFU / g (experimental treatment).The results showed that the final weight, weight gain, specific growth rate (SGR) and condition factor (CF) in the treatment containing L. casei had a significant increase compared to the control group (P <0.05). The results also showed that the inclusion of L. casei probiotic to the goldfish diet resulted in increase the number of white blood cells compared to the control group (P<0.05). Moreover, a significant increase in total number and intestinal lactic acid bacteria in the treatment containing probiotic Lactobacillus was observed compared to the control group (P<0.05). Therefore, addition of L. casei probiotic enhanced growth performance and intestinal lactic acid bacteria in goldfish (C. auratus).

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Journal title

آبزیان زینتی

volume 10 issue 1

pages 11- 18

publication date 2023-03

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