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| Burel, Christine; Robin, Jean; Boujard, Thierry. |
| The capability of turbots to use self-feeders was studied using 3 groups of 100 juveniles. Feeding activity reached a plateau after 20 days. Almost all feeding activity was observed during the photophase, and the acrophase was associated with dawn. The proportion of nocturnal demands was the highest in the replicate with the lowest feed efficiency, suggesting that feed waste was mainly occurring during nocturnal feeding activity. During the last 30 days of the experiment, demands were only rewarded during two periods of 2.5 h.day(-1). Feed efficiency was improved and was homogeneous between the three tanks, but the voluntary feed intake was reduced. It is concluded that turbots are able to use self-feeders but they do not adapt quickly, and they are not... |
| Tipo: Text |
Palavras-chave: Turbot; Self-feeders; Feeding behaviour; Feeding rhythms. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00335/44652/57339.pdf |
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| Millot, Sandie; Begout, Marie-laure. |
| The long term influence of individual biological rhythms on group feed demand behaviour was investigated in European sea bass (Dicentrarchus labrax) held under controlled environmental conditions with an on-demand feeding system. The experiment was realized over 219 days with 190 fish distributed on 4 tanks. Sea bass had a mean body mass comprised between 139 g to 183 g. The number of feed demand acts by each individual was calculated daily, and the population could thus be partitioned into three categories (high-, low-and zero-triggering fish). The duration of the period that an individual held high-triggering status could vary, but was 63 +/- 16 days on average. The transition period between two highest-triggering fish in one tank was on average 4 +/- 4... |
| Tipo: Text |
Palavras-chave: Dicentrarchus labrax; Self feeder; Social interactions; Feed demand leader; Feeding rhythms. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6874.pdf |
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