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Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings
A 65-day growth trial was conducted to investigate the dietary protein requirements for Culter mongolicus fingerlings. Isolipidic and isoenergetic diets were formulated with five dietary protein levels (32%, 37%, 42%, 47%, and 52%). Each diet was assigned to triplicate groups of 70 C. mongolicus fin...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8815975/ https://www.ncbi.nlm.nih.gov/pubmed/35120192 http://dx.doi.org/10.1371/journal.pone.0263507 |
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author | Qian, Jing Xiao, Lingjun Feng, Kai Li, Wei Liao, Chuansong Zhang, Tanglin Liu, Jiashou |
author_facet | Qian, Jing Xiao, Lingjun Feng, Kai Li, Wei Liao, Chuansong Zhang, Tanglin Liu, Jiashou |
author_sort | Qian, Jing |
collection | PubMed |
description | A 65-day growth trial was conducted to investigate the dietary protein requirements for Culter mongolicus fingerlings. Isolipidic and isoenergetic diets were formulated with five dietary protein levels (32%, 37%, 42%, 47%, and 52%). Each diet was assigned to triplicate groups of 70 C. mongolicus fingerlings (0.99±0.08 g). The results indicated that weight gain and specific growth rate (SGR) increased with increasing dietary protein levels up to 47%. The activities of intestinal trypsin and lipase were the lowest in the 32% protein and 52% protein groups, while amylase activity reduced markedly in the 47% protein group. These results suggest that different dietary protein levels may cause different transformations of nutrients. The activities of superoxide dismutase (SOD) and lysozyme were not affected by varying dietary protein levels, except for those in the 32% protein group. In contrast, the content of malondialdehyde (MDA) increased with increasing dietary protein levels and reaching a maximum in the 52% protein group, suggesting that MDA accumulation depends on the protein concentration and the potential oxidative stress. Taken together, based on the broken-line analysis of SGR, we recommended the optimum dietary protein for C. mongolicus fingerlings to be 48.97%~49.31%. |
format | Online Article Text |
id | pubmed-8815975 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-88159752022-02-05 Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings Qian, Jing Xiao, Lingjun Feng, Kai Li, Wei Liao, Chuansong Zhang, Tanglin Liu, Jiashou PLoS One Research Article A 65-day growth trial was conducted to investigate the dietary protein requirements for Culter mongolicus fingerlings. Isolipidic and isoenergetic diets were formulated with five dietary protein levels (32%, 37%, 42%, 47%, and 52%). Each diet was assigned to triplicate groups of 70 C. mongolicus fingerlings (0.99±0.08 g). The results indicated that weight gain and specific growth rate (SGR) increased with increasing dietary protein levels up to 47%. The activities of intestinal trypsin and lipase were the lowest in the 32% protein and 52% protein groups, while amylase activity reduced markedly in the 47% protein group. These results suggest that different dietary protein levels may cause different transformations of nutrients. The activities of superoxide dismutase (SOD) and lysozyme were not affected by varying dietary protein levels, except for those in the 32% protein group. In contrast, the content of malondialdehyde (MDA) increased with increasing dietary protein levels and reaching a maximum in the 52% protein group, suggesting that MDA accumulation depends on the protein concentration and the potential oxidative stress. Taken together, based on the broken-line analysis of SGR, we recommended the optimum dietary protein for C. mongolicus fingerlings to be 48.97%~49.31%. Public Library of Science 2022-02-04 /pmc/articles/PMC8815975/ /pubmed/35120192 http://dx.doi.org/10.1371/journal.pone.0263507 Text en © 2022 Qian et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Qian, Jing Xiao, Lingjun Feng, Kai Li, Wei Liao, Chuansong Zhang, Tanglin Liu, Jiashou Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings |
title | Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings |
title_full | Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings |
title_fullStr | Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings |
title_full_unstemmed | Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings |
title_short | Effect of dietary protein levels on the growth, enzyme activity, and immunological status of Culter mongolicus fingerlings |
title_sort | effect of dietary protein levels on the growth, enzyme activity, and immunological status of culter mongolicus fingerlings |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8815975/ https://www.ncbi.nlm.nih.gov/pubmed/35120192 http://dx.doi.org/10.1371/journal.pone.0263507 |
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