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Communication

Acceptance of a Protein Concentrate from Alfalfa (Medicago sativa) by Yellow Perch (Perca flavescens) Fed a Formulated Diet

1
Department of Agronomy and Plant Genetics, 1991 Upper Buford Circle, University of Minnesota, St. Paul, MN 55108, USA
2
Department of Fisheries, Wildlife and Conservation Biology, 2003 Upper Buford Circle, University of Minnesota, St. Paul, MN 55108, USA
3
U.S. Department of the Interior, Fish and Wildlife Service, Bozeman Fish Technology Center, 4050 Bridger Canyon Road, Bozeman, MT 59715, USA
4
U.S. Department of Agriculture, Agricultural Research Service, Plant Science Research Unit, 1991 Upper Buford Circle, St. Paul, MN 55108, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Maria Angeles Esteban
Received: 13 January 2021 / Revised: 11 March 2021 / Accepted: 22 March 2021 / Published: 25 March 2021
(This article belongs to the Special Issue Integration of Nutrition and Physiology in Aquatic Animals)
The majority of plant proteins used in aquatic feeds are derived from seed meals, which may contain antinutritional factors. Protein concentrates from plant foliage have received less attention in fish feeding trials. Alfalfa protein concentrate (APC) is derived from fresh alfalfa foliage that contains approximately 52% protein and is low in fiber. A feeding trial was done to assess growth and feed efficiency responses of yellow perch (Perca flavescens) fed a formulated diet with 180 g/kg APC replacing all fishmeal compared to a control isonitrogenous diet with fishmeal. Yellow perch accepted the APC diet but gained weight at a lower specific growth rate (−0.07% per day) and had an elevated feed conversion ratio (+0.32 g feed/g growth) than fish on the control diet containing fishmeal. There was no impact on survivorship or condition nor differences in fillet yield or composition in fish on the diet with APC compared to the control fishmeal diet. These findings indicate that although replacing fishmeal with APC in a perch diet resulted in slower growth rates, the APC was accepted and has promise as a sustainable protein in aquatic feeds. View Full-Text
Keywords: alfalfa; feed efficiency; fishmeal; growth rate; sustainability; yellow perch alfalfa; feed efficiency; fishmeal; growth rate; sustainability; yellow perch
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MDPI and ACS Style

Coburn, J.; Wells, M.S.; Phelps, N.B.D.; Gaylord, T.G.; Samac, D.A. Acceptance of a Protein Concentrate from Alfalfa (Medicago sativa) by Yellow Perch (Perca flavescens) Fed a Formulated Diet. Fishes 2021, 6, 9. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6020009

AMA Style

Coburn J, Wells MS, Phelps NBD, Gaylord TG, Samac DA. Acceptance of a Protein Concentrate from Alfalfa (Medicago sativa) by Yellow Perch (Perca flavescens) Fed a Formulated Diet. Fishes. 2021; 6(2):9. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6020009

Chicago/Turabian Style

Coburn, Jessica, M. S. Wells, Nicholas B.D. Phelps, T. G. Gaylord, and Deborah A. Samac 2021. "Acceptance of a Protein Concentrate from Alfalfa (Medicago sativa) by Yellow Perch (Perca flavescens) Fed a Formulated Diet" Fishes 6, no. 2: 9. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6020009

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