Studies on the improvement of the first feeding on a dry diet for Coregonus lavaretus L. larvae
| Autor: | Ricardo Rojas Beltran, Alexis Champigneulle |
|---|---|
| Přispěvatelé: | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), ProdInra, Migration |
| Jazyk: | angličtina |
| Rok vydání: | 1992 |
| Předmět: |
0106 biological sciences
Larva Wet weight food.dish Ecology 010604 marine biology & hydrobiology Fish farming [SDV.SA.STP] Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery Continuous feeding LAVARET 04 agricultural and veterinary sciences Feeding duration Aquatic Science Biology 01 natural sciences Animal science food Coregonus lavaretus [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery 040102 fisheries 0401 agriculture forestry and fisheries ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Aquaculture Aquaculture, Elsevier, 1992, 102, pp.319-331 |
| ISSN: | 0044-8486 |
| Popis: | Larvae of Coregonus lavaretus were fed for 36 days on a commercial dry diet under laboratory conditions (small tanks of 6.51 stocked at an initial density of 100 larvae/1). Two feeding durations (24 h or 9 h/day) and temperature patterns (10.5 °C constant; first 16 days at 16 °C and last 20 days at 10.5 °C) were tested. For each temperature condition, continuous feeding supported a significant increase in growth (74–91% average wet weight gain) at 36 days, without changing the survival rates (>79%) for all groups. For a given feeding duration, the initial growth was significantly better at 16 °C than at 10 °C. No growth advantage was obtained by 16 days of initial daily feeding at 16 °C when compared to continuous feeding at 10 °C. However, continuous feeding allowed the best utilization of warmer water as large (50 mg) larvae were obtained in only 16 days at 16 °C and these prefed larvae adapted well to a change to colder (10 °C) water. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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