Lacticaseibacillus casei ATCC 393 Cannot Colonize the Gastrointestinal Tract of Crucian Carp.

ABSTRACT: Lactic acid bacteria (LAB) are commonly applied to fish as a means of growth promotion and disease prevention. However, evidence regarding whether LAB colonize the gastrointestinal (GI) tract of fish remains sparse and controversial. Here, we investigated whether Lacticaseibacillus casei ATCC 393 (Lc) can colonize the GI tract of crucian carp. Sterile feed irradiated with 60Co was used to eliminate the influence of microbes, and 100% rearing water was renewed at 5-day intervals to reduce the fecal-oral circulation of microbes. The experiment lasted 47 days and was divided into three stages: the baseline period (21 days), the administration period (7 days: day -6 to 0) and the post-administration period (day 1 to 19). Control groups were fed a sterile basal diet during the whole experimenta

SUBMITTER: Zhang H 

PROVIDER: S-EPMC8708626 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature