Effects of Sustained Release of Medium on Water Quality and Microbial Metabolism of Tilapia Culture Water

doi:10.11924/j.issn.1000-6850.casb2022-0408

Abstract

Abstract:

The paper aims to study the effect of heterotrophic nitrifying bacteria on the water quality and microbial metabolism of tilapia (Oreochromis niloticus) under the condition of sustained release carbon source in the medium. Through the tilapia culture experiment, the effects of the medium slow-release carbon source and different nitrifying bacteria on the tilapia culture water were studied; through the Biolog-ECO technology, the effect of the medium slow-release condition on the metabolic diversity of microorganisms in the culture water was studied. The research results showed that the medium slow-release condition could effectively improve the eutrophication trend of tilapia aquaculture water, reduce the concentration of COD_Mnand chlorophyll in the aquaculture water, and increase the transparency of the water body. At the same time, the medium also significantly enhanced the ability of microorganisms to utilize carbon sources, and the microbial activity of the experimental group was significantly higher than that of the control group. The sustained release of medium has a certain positive significance for the study of water quality and microbial metabolic diversity of tilapia aquaculture, and provides a certain theoretical basis for its subsequent application in aquaculture.

Key words: sustained release of medium, tilapia, water quality, Biolog-ECO

YANG Yong, SHI Leilei, CHU Yuyao, CHEN Jiazhang, FAN Limin, MENG Shunlong. Effects of Sustained Release of Medium on Water Quality and Microbial Metabolism of Tilapia Culture Water[J]. Chinese Agricultural Science Bulletin, 2023, 39(14): 125-132.

Figures/Tables 4

References 29

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