Study on release kinetics of nitrogen and phosphorus from fish feed

Kong, Wenwen; Huang, Suiliang; Shi, Feifei; Yang, Zhenjiang; Feng, Yibei; Khatoon, Zobia; Zhou, Jian Guo; Xiao, Yao

doi:10.1111/are.14656

Cited by 9 publications

(6 citation statements)

References 33 publications

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“…In the middle and late stage of culture, the food intake of L. japonicus increased rapidly, and the faces at the bottom continued to accumulate, resulting the enrichment of nitrogen and phosphorus in the water. Previous studies have shown that fish only absorb about 20% of the phosphorus in the feed, and majority of phosphorus in the feed was released into the water (Hua and Bureau, 2006;Kong et al, 2020). High concentration of phosphorus of water can cause the overgrowth of algae and weeds, as well as oxygen depletion and toxin production (Kong et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have shown that fish only absorb about 20% of the phosphorus in the feed, and majority of phosphorus in the feed was released into the water (Hua and Bureau, 2006;Kong et al, 2020). High concentration of phosphorus of water can cause the overgrowth of algae and weeds, as well as oxygen depletion and toxin production (Kong et al, 2020). The enrichment of ammonia nitrogen of water might change the pH of fish blood and reduce the ability of blood to carry oxygen (Xu et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

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Relationship of environmental factors in pond water and dynamic changes of gut microbes of sea bass Lateolabrax japonicus

Zhu

Liang

et al. 2023

Front. Microbiol.

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The effect of structure of gut microbes on the health of host has attracted increasing attention. Sea bass Lateolabrax japonicus is an important farmed fish in China. The relationship of the dynamic changes of intestinal bacterial communities in L. japonicus and the cultural water environment is very important for healthy culture. Here, the diversity and abundance of the gut microbial communities of L. japonicus were evaluated during the culture using 16S rRNA Illumina sequencing. Both the opportunistic pathogens Aeromonas (1.68%), Vibrio (1.59%), and Acinetobacter (1.22%); and the potential probiotics Lactobacillus (2.27%), Bacillus (1.16%), and Lactococcus (0.37%) were distributed in the gut of L. japonicus. The increasing concentration of nitrogen of water environments with the increase of culture time significantly correlated with shifts in the microbial community structure: 40.04% of gut microbial changes due to nitrogen concentration. Higher concentrations of nitrogen showed a significantly negative correlation with intestinal probiotics in L. japonicus. The results indicate that the abundance of intestinal bacteria of L. japonicus is mainly driven by the changes of environmental factors (e.g., nitrogen), and it’s very important that the linking environmental parameters with bacterial data of guts could be used as an early warning indicator in L. japonicus heath culture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Relationship of environmental factors in pond water and dynamic changes of gut microbes of sea bass Lateolabrax japonicus

Zhu

Liang

et al. 2023

Front. Microbiol.

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“…The rapid P release indicated the presence of water-extractable P forms in both FM-GB and PB-GB. Formulated fish feeds used in aquaculture are usually also rich in water-extractable P 24 – 26 and show similarly rapid P release 26 . Nitrogen release requires the decomposition of N rich organic compounds 26 , and therefore, it is a delayed process in comparison with P release 24 , 25 .…”

Section: Discussionmentioning

confidence: 99%

“…Formulated fish feeds used in aquaculture are usually also rich in water-extractable P 24 – 26 and show similarly rapid P release 26 . Nitrogen release requires the decomposition of N rich organic compounds 26 , and therefore, it is a delayed process in comparison with P release 24 , 25 . In FM-GB, considerable N release occurred after 3–4 days, which is typical also for animal-derived aquaculture feeds (c.f.…”

Section: Discussionmentioning

confidence: 99%

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Acute effects of angler’s groundbaits: nutrient flux to water column

Fazekas,

Antal,

Halasi-Kovács

et al. 2023

Sci Rep

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Although ground-baiting related nutrient loading has been widely studied, we do not know what proportion of these nutrients release into the water column, affecting primary production directly. We conducted short-term (24-h, 5-day) experiments at wide temperature range, in presence and absence of fish using fish meal-based (FM-GB) and plant-based groundbait (PB-GB), to assess the nitrogen (N) and phosphorus (P) fluxes from GB into the water column. Nitrogen release from unconsumed FM-GB was negligible in the first 3 days, then increased abruptly, releasing 32% of its total N content by the fifth day. In contrast, PB-GB acted as temporary sink for inorganic N forms. Considerable (18–21%) inorganic P release was observed in both GB types in the first twelve hours. Consumed GBs induced considerable inorganic N release and its rate increased with temperature. Particulate forms predominated the released N in PB-GB, suggesting impaired digestion. Phosphorus—dominated by particulate forms—release was similar or lower than in unconsumed GB. Based on our results, excessive use of GB—when high amount of it remains unconsumed—can enhance eutrophication in P-limited ecosystems. Although less digestible GBs may have less abrupt effect on the primary production, undigested nutrients remain unavailable for removal through fish harvest.

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Performance of phytase-treated fishmeal-free and all-plant protein diets in pond production of market sized hybrid striped bass

Green,

Rawles,

Gaylord

et al. 2023

Aquaculture

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Study on release kinetics of nitrogen and phosphorus from fish feed

Abstract: Fish feed and faeces are known to be the most intensive wastes of aquaculture systems resulting in enriching the nutrient pool of re-

Cited by 9 publications

References 33 publications

Relationship of environmental factors in pond water and dynamic changes of gut microbes of sea bass Lateolabrax japonicus

Relationship of environmental factors in pond water and dynamic changes of gut microbes of sea bass Lateolabrax japonicus

Acute effects of angler’s groundbaits: nutrient flux to water column

Performance of phytase-treated fishmeal-free and all-plant protein diets in pond production of market sized hybrid striped bass

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