Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/24078
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Modelling the nitrogen loadings from large yellow croaker (Larimichthys crocea) cage aquaculture
Authors: Cai, Huiwen
Ross, Lindsay
Telfer, Trevor
Wu, Changwen
Zhu, Aiyi
Zhao, Sheng
Xu, Meiying
Contact Email: t.c.telfer@stir.ac.uk
Keywords: Dynamic modelling
Large yellow croaker
Nitrogen loadings
Ammonia
Urea
Cage aquaculture
Issue Date: Apr-2016
Publisher: Springer
Citation: Cai H, Ross L, Telfer T, Wu C, Zhu A, Zhao S & Xu M (2016) Modelling the nitrogen loadings from large yellow croaker (Larimichthys crocea) cage aquaculture, Environmental Science and Pollution Research, 23 (8), pp. 7529-7542.
Abstract: Large yellow croaker (LYC) cage farming is a rapidly developing industry in the coastal areas of the East China Sea. However, little is known about the environmental nutrient loadings resulting from the current aquaculture practices for this species. In this study, a nitrogenous waste model was developed for LYC based on thermal growth and bioenergetic theories. The growth model produced a good fit with the measured data of the growth trajectory of the fish. The total, dissolved and particulate nitrogen outputs were estimated to be 133, 51 and 82kgNtonne−1of fish production, respectively, with daily dissolved and particulate nitrogen outputs varying from 69 to 104 and 106 to 181mgNfish−1, respectively, during the 2012 operational cycle. Greater than 80% of the nitrogen input from feed was predicted to be lost to the environment, resulting in low nitrogen retention (<20%) in the fish tissues. Ammonia contributed the greatest proportion (>85%) of the dissolved nitrogen generated from cage farming. This nitrogen loading assessment model is the first to address nitrogenous output from LYC farming and could be a valuable tool to examine the effects of management and feeding practices on waste from cage farming. The application of this model could help improve the scientific understanding of offshore fish farming systems. Furthermore, the model predicts that a 63% reduction in nitrogenous waste production could be achieved by switching from the use of trash fish for feed to the use of pelleted feed.
Type: Journal Article
URI: http://hdl.handle.net/1893/24078
DOI Link: http://dx.doi.org/10.1007/s11356-015-6015-0
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Zhejiang Ocean University
Aquaculture
Aquaculture
Zhejiang Ocean University
Zhejiang Ocean University
Zhejiang Ocean University
Zhejiang Ocean University

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