Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish
Abstract We compared the performance of Yellowstone cutthroat trout Oncorhynchus clarki bouvieri broodfish when fed a diet with corn Zea mays gluten meal, wheat Triticum spp. gluten meal, and krill Euphausia superba protein sources relative to two fish meal diets. We hypothesized that the plant‐and‐...
Published in: | North American Journal of Aquaculture |
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crwiley:10.1577/a03-017 2024-04-28T08:18:06+00:00 Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish Smith, Mark A. Hubert, Wayne A. Barrows, Frederic T. University of Wyoming U.S. Geological Survey 2004 http://dx.doi.org/10.1577/a03-017 https://onlinelibrary.wiley.com/doi/pdf/10.1577/A03-017 https://onlinelibrary.wiley.com/doi/full-xml/10.1577/A03-017 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/A03-017 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Aquaculture volume 66, issue 1, page 61-69 ISSN 1522-2055 1548-8454 Aquatic Science journal-article 2004 crwiley https://doi.org/10.1577/a03-017 2024-04-08T06:55:00Z Abstract We compared the performance of Yellowstone cutthroat trout Oncorhynchus clarki bouvieri broodfish when fed a diet with corn Zea mays gluten meal, wheat Triticum spp. gluten meal, and krill Euphausia superba protein sources relative to two fish meal diets. We hypothesized that the plant‐and‐krill‐based diet would lead to a greater bioavailability of trace minerals and result in better broodfish condition, greater egg fertilization rates, increased survival of embryos to the swim‐up stage, and increased egg mineral content. The three diets were fed to three replicate lots of 2‐year‐old, captive‐reared fish for a 10‐month period prior to spawning. None of the measured characteristics of broodfish condition differed significantly among diets. We found no significant differences among diets in rates of egg fertilization or survival of embryos to the swim‐up stage. Manganese levels were lower in the eggs of fish fed one of the fish meal diets, but that was the only measure of egg content with a significant difference among diets. The experiment did not indicate that the plant‐and‐krill protein diet was better than fish‐meal‐based diets relative to the physiological condition of broodfish or the reproductive capabilities of Yellowstone cutthroat trout broodfish reared in captivity. Article in Journal/Newspaper Euphausia superba Wiley Online Library North American Journal of Aquaculture 66 1 61 69 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Smith, Mark A. Hubert, Wayne A. Barrows, Frederic T. Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish |
topic_facet |
Aquatic Science |
description |
Abstract We compared the performance of Yellowstone cutthroat trout Oncorhynchus clarki bouvieri broodfish when fed a diet with corn Zea mays gluten meal, wheat Triticum spp. gluten meal, and krill Euphausia superba protein sources relative to two fish meal diets. We hypothesized that the plant‐and‐krill‐based diet would lead to a greater bioavailability of trace minerals and result in better broodfish condition, greater egg fertilization rates, increased survival of embryos to the swim‐up stage, and increased egg mineral content. The three diets were fed to three replicate lots of 2‐year‐old, captive‐reared fish for a 10‐month period prior to spawning. None of the measured characteristics of broodfish condition differed significantly among diets. We found no significant differences among diets in rates of egg fertilization or survival of embryos to the swim‐up stage. Manganese levels were lower in the eggs of fish fed one of the fish meal diets, but that was the only measure of egg content with a significant difference among diets. The experiment did not indicate that the plant‐and‐krill protein diet was better than fish‐meal‐based diets relative to the physiological condition of broodfish or the reproductive capabilities of Yellowstone cutthroat trout broodfish reared in captivity. |
author2 |
University of Wyoming U.S. Geological Survey |
format |
Article in Journal/Newspaper |
author |
Smith, Mark A. Hubert, Wayne A. Barrows, Frederic T. |
author_facet |
Smith, Mark A. Hubert, Wayne A. Barrows, Frederic T. |
author_sort |
Smith, Mark A. |
title |
Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish |
title_short |
Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish |
title_full |
Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish |
title_fullStr |
Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish |
title_full_unstemmed |
Failure of a Plant‐and‐Krill‐Based Diet to Affect the Performance of Yellowstone Cutthroat Trout Broodfish |
title_sort |
failure of a plant‐and‐krill‐based diet to affect the performance of yellowstone cutthroat trout broodfish |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1577/a03-017 https://onlinelibrary.wiley.com/doi/pdf/10.1577/A03-017 https://onlinelibrary.wiley.com/doi/full-xml/10.1577/A03-017 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/A03-017 |
genre |
Euphausia superba |
genre_facet |
Euphausia superba |
op_source |
North American Journal of Aquaculture volume 66, issue 1, page 61-69 ISSN 1522-2055 1548-8454 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1577/a03-017 |
container_title |
North American Journal of Aquaculture |
container_volume |
66 |
container_issue |
1 |
container_start_page |
61 |
op_container_end_page |
69 |
_version_ |
1797582289397350400 |