Can turbot, Psetta maxima, be fed with self-feeders ?
| Autor: | Jean Robin, Christine Burel, Thierry Boujard |
|---|---|
| Přispěvatelé: | Station d'hydrobiologie, Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
feeding rhythms
Aquatic Science Nocturnal Feed conversion ratio self-feeders feeding behaviour Animal science poisson Sciences et techniques des pêches 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology psetta maxima nutrition animale alimentation libre service ComputingMilieux_MISCELLANEOUS Sciences and technics of fishery biology comportement alimentaire 05 social sciences 04 agricultural and veterinary sciences distributeur d'aliment biology.organism_classification ALIMENTATION DES POISSONS Turbot turbot Homogeneous [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery 040102 fisheries 0401 agriculture forestry and fisheries |
| Zdroj: | Aquatic Living Resources 6 (10), 381-384. (1997) Aquatic Living Resources Aquatic Living Resources, EDP Sciences, 1997, 10 (6), pp.381-384 Aquatic Living Resources (0990-7440) (Gauthier-villars/editions Elsevier), 1997-11, Vol. 10, N. 6, P. 381-384 |
| ISSN: | 0990-7440 1765-2952 |
| Popis: | 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 able to compensate a reduction of feed access by increasing demand activity during the access period. |
| Databáze: | OpenAIRE |
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