Tilapia processing byproduct treated with enzymatic hydrolysis and Rhodopseudomonas palustris is feasible for live feed culturing: Pathogen inhibition in vitro, live feeds microbiota, and Bidyanus bidyanus larviculture

Autor: I-Pei Kuo, Ching-Shuo Liu, Shuenn-Der Yang, Zhen-Hao Liao, Yeh-Fang Hu, Fan-Hua Nan
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Aquaculture Reports, Vol 28, Iss , Pp 101439- (2023)
Druh dokumentu: article
ISSN: 2352-5134
DOI: 10.1016/j.aqrep.2022.101439
Popis: Fish processing byproducts are conventionally used in live feed production for larviculture because of their low cost and high productivity. However, waste-generated bacteria may cause pathogen proliferation, and antibiotics are widely used to reduce the bacterial loads of live feeds. In this study, tilapia processing byproducts were hydrolyzed into fish protein hydrolysate (FPH). Subsequently, the FPH was used to culture Rhodopseudomonas palustris, a photosynthetic bacterium (PSB), as a nutritional source for live feed. The results of the in vitro pathogen inhibition assay indicated that R. palustris significantly inhibited the growth of Aeromonas hydrophila, Edwardsiella tarda, Lactococcus garviae, and Streptococcus iniae in the FPH supernatant (p
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