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- Title
Lipid accumulation in rainbow trout (Oncorhynchus mykiss) muscle cells, reared in superintesive system.
- Authors
COCAN, D. I.; MIREŞAN, V.; COŞIER, V.; RUXANDA, F.; RUS, V.; MICLĂUŞ, V.
- Abstract
In the present study we approached the problem of lipid accumulation in rainbow trout (Oncorhynchus mykiss) reared in superintensive system, at 50 kg/m? density. If in farmed animals, lipid deposits are located visceral, subcutaneous or intramuscular, in rainbow trout we noticed their arrangement is located within the muscle fiber. Depending on the environmental conditions and food intake, these accumulations of fat exert increasing pressure on the muscle fiber, which gradually atrophies, and finally become the exclusive cellular lipid content. Muscle fiber plasmalemma remains intact, even if the cell volume increases and muscle fiber is replaced by lipid deposits. This phenomenon has been observed in a control group of rainbow trout (reared in classical system), but lipid accumulation process is more discreet and was reported just near the connective septs. In the group reared in superintensive system, lipid accumulation had sometimes dramatic aspects, meaning they appear as sac-shaped deposits of fat, bounded by endomysium. The consequence of this process is the degradation of rainbow trout meat quality, which calls into question the capability of superintesive growth systems to develope high quality products.
- Subjects
RAINBOW trout; LIPID analysis; BIOACCUMULATION in fishes; FISH quality; ATROPHY
- Publication
Annals of the Romanian Society for Cell Biology, 2015, Vol 19, Issue 2, p55
- ISSN
2067-3019
- Publication type
Article
- DOI
10.ANN/RSCB-2015-0010:RSCB