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Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain

With the development of large-scale livestock farming, manure pollution has drawn much attention. Conversion by insects is a rapid and cost-effective new method for manure management. Swine manure conversion with maggots (Musca domestica larvae) has developed, and the harvested maggots are often use...

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Detalles Bibliográficos
Autores principales: Wang, Wanqiang, Zhang, Wenjuan, Wang, Xiaoping, Lei, Chaoliang, Tang, Rui, Zhang, Feng, Yang, Qizhi, Zhu, Fen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5566944/
https://www.ncbi.nlm.nih.gov/pubmed/28827547
http://dx.doi.org/10.1038/s41598-017-07317-2
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author Wang, Wanqiang
Zhang, Wenjuan
Wang, Xiaoping
Lei, Chaoliang
Tang, Rui
Zhang, Feng
Yang, Qizhi
Zhu, Fen
author_facet Wang, Wanqiang
Zhang, Wenjuan
Wang, Xiaoping
Lei, Chaoliang
Tang, Rui
Zhang, Feng
Yang, Qizhi
Zhu, Fen
author_sort Wang, Wanqiang
collection PubMed
description With the development of large-scale livestock farming, manure pollution has drawn much attention. Conversion by insects is a rapid and cost-effective new method for manure management. Swine manure conversion with maggots (Musca domestica larvae) has developed, and the harvested maggots are often used as animal feed. However, the flow of heavy metals from manure to downstream processes cannot be ignored, and therefore, heavy metal content was measured in untreated raw manure, maggot-treated manure, harvested maggots and maggot-eating chickens (chest muscle and liver) to evaluate potential heavy metal risks. The levels of zinc, copper, chromium, selenium, cadmium and lead had significant differences between untreated raw manure and maggot-treated manure. The concentrations of all detected heavy metals, except for cadmium and selenium, in maggots met the limits established by the feed or feed additive standards of many countries. The bioaccumulation factor (BAF) of heavy metals decreased with the increase of the maggot instar, indicating that heavy metals were discharged from the bodies of maggots with the growth of maggots. Also, the contents of overall heavy metals in chickens fed harvested maggots met the standards for food. In conclusion, regarding heavy metals, it is eco-safe to use maggots in manure management.
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spelling pubmed-55669442017-09-01 Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain Wang, Wanqiang Zhang, Wenjuan Wang, Xiaoping Lei, Chaoliang Tang, Rui Zhang, Feng Yang, Qizhi Zhu, Fen Sci Rep Article With the development of large-scale livestock farming, manure pollution has drawn much attention. Conversion by insects is a rapid and cost-effective new method for manure management. Swine manure conversion with maggots (Musca domestica larvae) has developed, and the harvested maggots are often used as animal feed. However, the flow of heavy metals from manure to downstream processes cannot be ignored, and therefore, heavy metal content was measured in untreated raw manure, maggot-treated manure, harvested maggots and maggot-eating chickens (chest muscle and liver) to evaluate potential heavy metal risks. The levels of zinc, copper, chromium, selenium, cadmium and lead had significant differences between untreated raw manure and maggot-treated manure. The concentrations of all detected heavy metals, except for cadmium and selenium, in maggots met the limits established by the feed or feed additive standards of many countries. The bioaccumulation factor (BAF) of heavy metals decreased with the increase of the maggot instar, indicating that heavy metals were discharged from the bodies of maggots with the growth of maggots. Also, the contents of overall heavy metals in chickens fed harvested maggots met the standards for food. In conclusion, regarding heavy metals, it is eco-safe to use maggots in manure management. Nature Publishing Group UK 2017-08-21 /pmc/articles/PMC5566944/ /pubmed/28827547 http://dx.doi.org/10.1038/s41598-017-07317-2 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wang, Wanqiang
Zhang, Wenjuan
Wang, Xiaoping
Lei, Chaoliang
Tang, Rui
Zhang, Feng
Yang, Qizhi
Zhu, Fen
Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
title Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
title_full Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
title_fullStr Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
title_full_unstemmed Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
title_short Tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
title_sort tracing heavy metals in ‘swine manure - maggot - chicken’ production chain
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5566944/
https://www.ncbi.nlm.nih.gov/pubmed/28827547
http://dx.doi.org/10.1038/s41598-017-07317-2
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