Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets
Post-smolt Atlantic salmon were fed control (C), plant protein- (PP), and animal protein (AP)-based diets over a 90-day period. At trial start, the outline shape variation in the salmon body was recorded using two-dimensional Cartesian coordinates of a combination of 12 landmarks (LM) and three semi...
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MDPI AG
2025-02-01
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| Series: | Fishes |
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| Online Access: | https://www.mdpi.com/2410-3888/10/2/62 |
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| author | Jorge G. Chollet-Villalpando Frederic T. Barrows Ewen McLean |
| author_facet | Jorge G. Chollet-Villalpando Frederic T. Barrows Ewen McLean |
| author_sort | Jorge G. Chollet-Villalpando |
| collection | DOAJ |
| description | Post-smolt Atlantic salmon were fed control (C), plant protein- (PP), and animal protein (AP)-based diets over a 90-day period. At trial start, the outline shape variation in the salmon body was recorded using two-dimensional Cartesian coordinates of a combination of 12 landmarks (LM) and three semi-landmarks from each of the 48 fish. The identical landmarks were then assessed at trial end for the differing dietary treatments. These datasets were used to determine whether diet exerted a measurable effect on body shape to enable authentication of fishmeal/fish oil-free status. Most differences in shape at trial end were visualized at the base of the dorsal and pelvic fins and caudal peduncle. The greatest shape variation between PP and AP groups was found at the base of the pectoral and pelvic fins. While PP and AP groups were more similar in shape than control fish, the recorded differences were not significant enough to verify dietary origins. The number of animals employed and the length of the trial period were likely insufficient to distinguish alterations in body shape with any certainty. Future trials should employ larger numbers of animals and be of longer length to verify whether PP-based feeds cause changes in body shape. |
| format | Article |
| id | doaj-art-4c6cb5b5c8bf406b9d5003e3f789f674 |
| institution | DOAJ |
| issn | 2410-3888 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj-art-4c6cb5b5c8bf406b9d5003e3f789f6742025-08-20T02:44:49ZengMDPI AGFishes2410-38882025-02-011026210.3390/fishes10020062Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free DietsJorge G. Chollet-Villalpando0Frederic T. Barrows1Ewen McLean2Centro Interdisciplinario de Ciencias Marinas, Departamento de Pesquerías y Biología Marina, Avenida Instituto Politécnico Nacional s/n, Colonia Playa Palo de Santa Rita, La Paz 23096, BCS, MexicoAquatic Feed Technologies LLC, Islamorada, FL 33036, USAAqua Cognoscenti LLC, West Columbia, SC 29170, USAPost-smolt Atlantic salmon were fed control (C), plant protein- (PP), and animal protein (AP)-based diets over a 90-day period. At trial start, the outline shape variation in the salmon body was recorded using two-dimensional Cartesian coordinates of a combination of 12 landmarks (LM) and three semi-landmarks from each of the 48 fish. The identical landmarks were then assessed at trial end for the differing dietary treatments. These datasets were used to determine whether diet exerted a measurable effect on body shape to enable authentication of fishmeal/fish oil-free status. Most differences in shape at trial end were visualized at the base of the dorsal and pelvic fins and caudal peduncle. The greatest shape variation between PP and AP groups was found at the base of the pectoral and pelvic fins. While PP and AP groups were more similar in shape than control fish, the recorded differences were not significant enough to verify dietary origins. The number of animals employed and the length of the trial period were likely insufficient to distinguish alterations in body shape with any certainty. Future trials should employ larger numbers of animals and be of longer length to verify whether PP-based feeds cause changes in body shape.https://www.mdpi.com/2410-3888/10/2/62alternative proteinsconsumergrowthmorphometricsqualitysustainability |
| spellingShingle | Jorge G. Chollet-Villalpando Frederic T. Barrows Ewen McLean Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets Fishes alternative proteins consumer growth morphometrics quality sustainability |
| title | Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets |
| title_full | Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets |
| title_fullStr | Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets |
| title_full_unstemmed | Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets |
| title_short | Body Shape Variation in Atlantic Salmon (<i>Salmo salar</i>, L.) Fed Fishmeal and Fish Oil-Free Diets |
| title_sort | body shape variation in atlantic salmon i salmo salar i l fed fishmeal and fish oil free diets |
| topic | alternative proteins consumer growth morphometrics quality sustainability |
| url | https://www.mdpi.com/2410-3888/10/2/62 |
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