Probiotics containing Streptomyces spp. improved water quality, survival, growth, and fillet quality of striped catfish under intensive farming

Authors

1 Hanoi Open University, Hanoi, Vietnam

2 Institute of Agriculture and Natural Resources, Vinh University, Nghe An, Vietnam

3 Faculty of Biology, Hanoi National University of Education, Hanoi, Vietnam

4 Research Institute for Aquaculture No.2, Ho Chi Minh City, Vietnam

5 Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam

10.22092/ijfs.2025.134855

Abstract

This study evaluated the benefits of Streptomyces spp. in striped catfish under intensive farming in the Mekong Delta, Vietnam. The lyophilized biomass of two strains, Streptomyces kunmingensis XK9 and Streptomyces angustmyceticus XK22 (10⁹ CFU/g), was incorporated into the catfish pellets at 1 g per kg and administered daily to fish throughout the seven-month trial. Streptomyces supplementation maintained water quality within optimal ranges for temperature, pH, dissolved oxygen, ammonia, and turbidity, whereas control ponds deviated after five months, potentially impairing fish performance. After seven months, fish receiving XK9 and XK22 showed significantly improved survival rate, growth performance, and feed conversion ratio compared with the control (p<0.05). Fillet quality was also enhanced in fish fed Streptomyces-supplemented diets, with significant improvements in proximate composition, amino acid profile, and fatty acid profile (p<0.05). The finding revealed the potential of XK9 and XK22 to improve water quality, enhance catfish growth performance, and enrich the nutritional value of striped catfish under intensive culture. The beneficial effects of these Streptomyces strains make them a promising alternative strategy for sustainable catfish production.

Keywords

Iranian Journal of Fisheries Sciences
Volume 25, Issue 1
January 2026
Pages 105-126

Files

Share

How to cite

Statistics