Weight gain and lipid deposition in Atlantic salmon, Salmo salar, during compensatory growth: evidence for lipostatic regulation?
By S. Johansen, M. Ekli, B. Stangnes, M. Jobling. 2001
123 citations recorded by the source corpus.
Feed-restricted fish gain less body mass and storage reserves than well-fed fish, and reduced rates of gain often trigger compensatory responses, characterized by increased appetite (hyperphagia) and growth rate. The results of previous investigations have introduced a hypothesis in which adipose tissue (fat stores) had a regulatory role in governing appetite. An extension of this suggests that hyperphagia may relate to the severity of the feed restriction, and that the compensatory responses will cease once fat reserves are restored relative to body size. This was tested in two trials in which feed-restricted or -deprived postsmolt Atlantic salmon, Salmo salar, became hyperphagic after transfer to excess feeding. At the end of the first trial, previously feed-restricted fish had fully compensated for their lost weight gain compared to continuously fed control fish, but had a leaner body composition (i.e. reduced energy stores) and were still showing signs of compensatory growth. In the second trial, feed deprivation drained body lipids and caused a stronger hyperphagic response than restrictive feeding, although it took longer to develop. Feed intake became coincident when fish had a similar body composition for size, but this occurred at different times. Hence, the fish that had been deprived of feed were smaller than the restricted fish at the end of the trial. The results of the present study demonstrate a link between the magnitude of lipid stores, feed intake and weight gain, and provide some evidence for lipostatic appetite regulation in fish.
Subfields: Aquatic Science, Immunology, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/200694960b204c536fca15eeb90b7e160e98678f
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Aquatic Science
In Immunology
In Nature and Landscape Conservation
Citations in the corpus
- Effects of increasing replacement of dietary fishmeal with plant protein sources on growth performance and body lipid composition of Atlantic salmon (Salmo salar L.) (2010, background): “, 2008), but are able to 375 compensate after being fed a restricted feed intake (Johansen et al., 2001; Mundheim et al., 376 2004).”
- Compensatory Growth, Feed Utilization, Whole-Body Composition, and Hematological Changes in Starved Juvenile Nile Tilapia, Oreochromis niloticus (L.) (2006, background): “…deprivation or restricted feeding, and, in several cases, have caught up in weight with continuous-fedcontrols (Russell and Wootton1992; Jobling 1994; Johansen et al. 2001; Maclean and Metcalfe 2001; Xie et al. 2001; Zhu et al. 2001; Tian and Qin 2003, 2004; Nikki et al. 2004; Wang et al. 2005).”