DataSheet_1_Statistical modelling of voluntary feed intake in individual Atlantic salmon (Salmo salar L.).docx

Precision feeding aims to provide the correct amount of feed to farmed animals for optimal growth and performance and to avoid feed waste. However, knowledge underlying the meal-to-meal variability in voluntary feed intake of farmed species is still limited. This study examined the relationship betw...

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Bibliographic Details
Main Authors: Ana S. Gomes, Fabian Zimmermann, Ernst M. Hevrøy, Marcus A. L. Søyland, Tom J. Hansen, Tom Ole Nilsen, Ivar Rønnestad
Format: Dataset
Language:unknown
Published: 2023
Subjects:
Oceanography
Marine Biology
Marine Geoscience
Biological Oceanography
Chemical Oceanography
Physical Oceanography
Marine Engineering
meal size
consumption
feed deprivation
growth
aquaculture
precision feeding
salmon
feed intake
Atlantic salmon
Salmo salar
Online Access:https://doi.org/10.3389/fmars.2023.1127519.s001
https://figshare.com/articles/dataset/DataSheet_1_Statistical_modelling_of_voluntary_feed_intake_in_individual_Atlantic_salmon_Salmo_salar_L_docx/22108655
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Summary:Precision feeding aims to provide the correct amount of feed to farmed animals for optimal growth and performance and to avoid feed waste. However, knowledge underlying the meal-to-meal variability in voluntary feed intake of farmed species is still limited. This study examined the relationship between meals, feed deprivation time and the feed (pellets) consumed by Atlantic salmon post smolts. The data was collected from individual fish handfed to satiety without social interaction in three independent short-term (6-12 days) experiments. The fixed variables of our model (feed deprivation time (i.e., time between meals), number of pellets provided, day, previous meal size, and fish growth) explained most of the feed intake (number of pellets ingested) (R 2 0.68). Results show that fish ingested more pellets over the course of the trials as they grew, resulting in a positive correlation between feed intake and fish growth (final minus initial fish weight). The time between meals and prior meal size (the number of pellets ingested in the previous meal) significantly affected feed intake in the following meal. Our results suggest that it is possible to optimise meal size by considering the size of the previous meal and the time since it was given.

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