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通过10年（2009 - 2019年）的投喂方式和管理提高虹鳟养殖水质

Improvement of the Water Quality in Rainbow Trout Farming by Means of the Feeding Type and Management over 10 Years (2009-2019).

作者信息

Fiordelmondo Elisa, Magi Gian Enrico, Mariotti Francesca, Bakiu Rigers, Roncarati Alessandra

机构信息

School of Bioscience and Veterinary Medicine, University of Camerino, Circonvallazione 93-95, 62034 Matelica, Italy.

Department of Aquaculture, University of Tirana, Place Mother Tereza 183, 695581 Tirana, Albania.

出版信息

Animals (Basel). 2020 Sep 1;10(9):1541. doi: 10.3390/ani10091541.

DOI:10.3390/ani10091541
PMID:32882845
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7552201/
Abstract

BACKGROUND

In Europe, rainbow trout is one of the main fresh water fish farmed in a constantly developing environment that requires innovative studies to improve farm management, fish welfare and environmental sustainability. The aim of this paper is to investigate the trend of water quality parameters over 10 years, after a feeding strategy change from pellet to extruded feed.

METHODS

The study was conducted on a farm in central Italy, based on parallel raceways. The cycle started from young rainbow trout (90 ± 2 g) that were grown until they reached market size. A water sample of 500 cm was collected monthly from 2009 to 2019 from the lagoon basin in order to investigate the trends of the total suspended solids (TSS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), nitrites (NO-N), nitrates (NO-N), total ammonia nitrogen (TAN), total phosphorus (TP) and pH.

RESULTS

All of the studied parameters (TSS, BOD, COD, NO-N, NO-N, TAN and TP) showed a significant improvement from 2009 to 2019. The pH parameter did not display notable variation during the studied period. The feed conversion ratio (FCR) was also investigated and exhibited a significant improvement from 1.4 to 1.1.

CONCLUSION

Based on the decrease of all the investigated parameters, it is possible to say that extrusion is currently an excellent processing feed technique in aquaculture with a good level of respect for the environment.

摘要

背景

在欧洲，虹鳟是在持续发展的环境中养殖的主要淡水鱼之一，这需要开展创新性研究以改善养殖管理、鱼类福利和环境可持续性。本文旨在研究从颗粒饲料改为挤压饲料的投喂策略改变后10年期间水质参数的变化趋势。

方法

该研究在意大利中部的一个养殖场进行，基于平行养殖池。养殖周期从幼虹鳟（90±2克）开始，一直养殖到达到上市规格。从2009年至2019年每月从泻湖流域采集500立方厘米的水样，以研究总悬浮固体（TSS）、生化需氧量（BOD）、化学需氧量（COD）、亚硝酸盐（NO₂-N）、硝酸盐（NO₃-N）、总氨氮（TAN）、总磷（TP）和pH的变化趋势。

结果

所有研究参数（TSS、BOD、COD、NO₂-N、NO₃-N、TAN和TP）在2009年至2019年期间均有显著改善。pH参数在研究期间没有显著变化。还研究了饲料转化率（FCR），其从1.4显著提高到1.1。

结论

基于所有调查参数的下降，可以说挤压目前是水产养殖中一种优秀的饲料加工技术，对环境的影响较小。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/984195604bdb/animals-10-01541-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/2732c63efea9/animals-10-01541-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/b59f30eedf13/animals-10-01541-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/1a5906f6f0b7/animals-10-01541-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/37106b5d2566/animals-10-01541-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/66ab99d911d4/animals-10-01541-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/02aeb19c6d8e/animals-10-01541-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/497e3c5abd15/animals-10-01541-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/af1185d5a42f/animals-10-01541-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/984195604bdb/animals-10-01541-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/2732c63efea9/animals-10-01541-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/b59f30eedf13/animals-10-01541-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/1a5906f6f0b7/animals-10-01541-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/37106b5d2566/animals-10-01541-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/66ab99d911d4/animals-10-01541-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/02aeb19c6d8e/animals-10-01541-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/497e3c5abd15/animals-10-01541-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/af1185d5a42f/animals-10-01541-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ed6/7552201/984195604bdb/animals-10-01541-g009.jpg

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Longitudinal evaluation of the impact of traditional rainbow trout farming on receiving water quality in Ireland.
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