Genomic Characterization of Four Novel Probiotic Strains with Enzymatic Activity and Their Effects on Carp ().

The shift toward plant-based feeds in aquaculture necessitates a search for probiotics to improve the digestibility of such feeds and fish growth. This study characterizes four strains for their probiotic potential in carp (). Strains isolated from river sediments underwent in vitro screening for proteolytic/amylolytic activity, antibiotic sensitivity, and biofilm formation.

Lactobacilli and gut pH: features of correlation in model experiments.

Representatives of lactobacilli are among the most common probiotics, largely due to their prevalence as microorganisms involved in the fermentation of dairy products. However, research on their properties is often conducted under laboratory conditions, which are different from the conditions in the gut, making it difficult to extrapolate the obtained data. In our study, we demonstrate how the properties of two probiotic strains, Limosilactobacillus frumenti KL31 and Ligilactobacillus salivarius KL61, change under model conditions that approximate those of the gut, and we explore the relationship between lactic acid bacteria and the pH levels of the intestinal environment.

Genomic Analysis and Metabolite Profiling of Three Probiotic Strains for Potential Application in Aquaculture.

In this study, we investigated the genomic characteristics and bioactive metabolite profiles of three novel strains that were isolated from the intestinal tracts of healthy carp (). Strain identification and whole-genome sequencing were performed before analysis. Among the three novel strains, R1 and R4 were classified as , and strain R5 was classified as .

Bacillibactin, a Potential -Based Antibacterial Non-Ribosomal Peptide: In Silico Studies for Targeting Common Fish Pathogens.

Aquaculture is one of the fastest-growing sectors in food production. The widespread use of antibiotics in fish farming has been identified as a driver for the development of antibiotic resistance. One of the promising approaches to solving this problem is the use of probiotics.

Influence of the synergetic effect of the biocenosis synthesis of zoogenic colonies of bacteria and protozoa on the sustainable development of aquatic ecosystems.

The production of agricultural products, especially livestock and aquaculture products containing high amounts of protein, has a significant impact on the environment. However, humankind cannot forego the production of such products, since a balanced diet is necessary to maintain a healthy lifestyle. In Russia, where climatic features of most regions are unfavorable for agricultural activities, industrial aquaculture has a negative impact on the environment.