Search for: [Description = "Energy balance and body mass changes were studied in non\-reproducing adult eastern hedgehogs Erinaceus concolor \(Martin, 1838\) during an 8\-day feeding traial. The amount of energy consumed by the hedgehogs that maintained constant body mass averaged 0.74 kJ x g\-1 x day. The energy equivalent of body mass loss amounted to 15.12 kJ x g\-1, and that of body mass gain was 25.18 kJ energy consumed x g\-1. If the energy contents of body mass gained and lost were the same, biomass production efficiency was 72.2%."]

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