Effects of the size and the temperature on the voluntary feed intake of European sea bass (Dicentrarchus labrax L.)
1999
Lanari, D. | Ballestrazzi, R. (Udine Univ. (Italy). Dipartimento di Scienze della Produzione Animale)
anglais. [Seven hundred and twenty seven European sea bass were divided into 5 weight classes (65, 100, 140, 170 and 235 g), distributed among 24 tanks and subjected to 7 different water temperatures: 13, 16, 19, 22, 25, 28 and 31 deg C. For every temperature cycle, after an adaptation phase, voluntary feed intake was measured for 5 consecutive days. Only a type of feed (extruded, 3 mm diameter, 43.7% N x 6,25, 25.6% fat) was utilised during the whole trial. Voluntary intake of sea bass (% average live weight of tank) was positively related to water temperature (r = 0.96; P0.001) and photoperiod (r
Afficher plus [+] Moins [-]italien. Settecentoventisei branzini vennero suddivisi in 5 classi di peso iniziale (65, 100, 140, 170 e 235 g), distribuiti in 24 vasche e sottoposti a 7 differenti temperature: 13, 16, 19, 22, 25, 28 e 31 gradi C. Ad ogni ciclo termico, dopo una fase di adattamento, venne rilevata l'ingestione volontaria per 5 giorni consecutivi. Si utilizzo' un solo tipo di alimento (estruso, 3 mm di diametro, 43,7% di N x 6,25 , 25,6% di grasso). Il consumo volontario dei branzini (% peso vivo medio vasca) risulto' positivamente correlato alla temperatura dell'acqua (r = 0,96; P0,001) ed al fotoperiodo (r
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