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Effects of starvation on proximate chemical composition and energy utilization of plaice, Pleuronectes platessa L.
Author(s) -
Jobling M.
Publication year - 1980
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1980.tb02766.x
Subject(s) - pleuronectes , biology , starvation , proximate , nutrient , catabolism , fishery , zoology , anabolism , energy metabolism , food science , ecology , endocrinology , fish <actinopterygii> , metabolism
Proximate analysis of the body tissues of plaice showed that body fat was the major storage reserve utilized during starvation. Although the liver and gut were much depleted during the period of the fast they contributed only a small proportion of the metabolizable energy. Atrophy of the gut led to reductions in motor activity but the ability to digest and absorb nutrients was not impaired. Assessments of energy utilization using proximate analysis and calculations from ammonia quotient determinations are compared and show that during the latter part of the fast 20–25% of the energy utilized was derived from protein catabolism.