Evaluation of antimicrobial activity of a combination of bacteria from farmed Pacific white shrimp Penaeus vannamei Boone, 1931, in vitro and in vivo phases

Sarhadi, Saeedeh; sourinezhad, Iman; Gozari, Mohsen

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Sarhadi S, sourinezhad I, Gozari M. Evaluation of antimicrobial activity of a combination of bacteria from farmed Pacific white shrimp Penaeus vannamei Boone, 1931, in vitro and in vivo phases. JFST 2024; 13 (3) :97-111
URL: http://jfst.modares.ac.ir/article-6-75199-en.html

Evaluation of antimicrobial activity of a combination of bacteria from farmed Pacific white shrimp Penaeus vannamei Boone, 1931, in vitro and in vivo phases

Saeedeh Sarhadi¹

, Iman Sourinezhad ^*

², Mohsen Gozari³

1- University of Hormozgan
2- University of Hormozgan , i_sourinezhad@yahoo.com
3- Persian Gulf and Oman Sea Ecology Research Center

Abstract: (517 Views)

Evaluation of the antimicrobial activity of bacteria in the aquaculture ecosystem is the first stage of probiotic bacteria screening studies. The aim of the present study was to isolate the intestinal bacteria of cultivated Vanammei shrimp with antimicrobial activity against pathogenic bacteria in vitro and in vivo. For this purpose, sampling of shrimp culture sites in South Tiab and North Tiab was done in 3 stages. The results of counting culturable bacteria using Zobell agar culture medium showed that in South Tiab site, the average number of bacteria in shrimp intestine samples was from 3.66 × 10⁶ CFU/gr in the first stage of sampling to 4.63 ×10⁶ CFU/gr in the third stage. With a similar trend, the changes of this amount in the North Tiab site fluctuated from 16.4 ×10⁶ CFU/gr to 16.16 ×10⁶ CFU/gr. Evaluation of the antimicrobial activity of the isolates using the agar diffusion method showed that 9, 6, 4 and 3 isolates respectively compared to V. alginolyticus, V. harveyi, V. parahaemolyticus and P. aeroginosa showed antimicrobial activity.

Keywords: Intestine bacteria, Genetic identification, Microbial challenge test, Penaeus vannamei

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Article Type: Original Research | Subject: Aquatic Animal Health & disease
Received: 2024/05/19 | Published: 2024/10/9

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