Consulta: subjectFacets:"Elevage intensif"
Registros recuperados: 4
Data/hora: 11/06/2024 12:28:17

Effets de l'apport de phytoplancton (Skeletonema costatum) sur la croissance et les variations de la composition biochimique de la palourde japonaise Ruditapes philippinarum cultivée en marais
Provedor de dados: 5
Autores: Baud, Jean-pierre; Haure, Joel; Garnier, Jacqueline.
A bulk production of phytoplankton (Skelelonema costatum) has been obtained in concrete tanks from saline groundwater. This was used in various concentrations to feed an intensive cultivation of the Manila clam (Ruditapes philippinarum) in ponds. No difference was observed in growth rates of molluscs, with food concentrations between 31 to 126 µg/l Chl a. However, the growth rates obtained from March to November with a food supplement were 1.5 times higher than those observed in the traditional, extensive cultivation. The biomass doubled and the increase in flesh dry weight was 2.5 times higher. The condition index reached a value of 100 in the intensive cultivation. During growth, the proximate composition analysis revealed that the lipid and carbohydrate...
Tipo: Text
Palavras-chave: Ruditapes philippinarum; Skeletonema costatum; Elevage intensif; Claire; Croissance; Composition biochimique; Ruditapes philippinarum; Skeletonema costatum; Intensive rearing; Pond; Growth; Biochemical changes.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00039/14980/12307.pdf

Intensive culture of the Manila clam (Ruditapes philippinarum) in marine ponds. The impact of rearing densities and feeding levels on growth rates and yields
Provedor de dados: 5
Autores: Baud, Jean-pierre; Haure, Joel; Bodoy, Alain.
Intensive ongrowing (from 28 mm to the commercial size, 35 mm) of the Manila clam Ruditapes philippinarum was studied in experimental raceways with a natural bottom of clay. The factors controlled were rearing density (100, 200, and 300 individuals/m2) and food concentration (34.0 and 68.1 µg.1-1 chlorophyll a). Food was produced from a batch culture of Skeletonema costatum in a large volume (50 m3), thanks to the fertile ground and saline water. Best results regarding final size were obtained in the vicinity of the inflow with a densilY of 100 individuals/m2. However it was a density of 300 individuals/m2 which appeared from the following results to be the optimal choice for intensive rearing: the survival rate was 84 %, the final biomass was 4 kg/m2 and...
Tipo: Text
Palavras-chave: Ruditapes philippinarum; Skeletonema costatum; Elevage intensif; Marais maritime; Croissance; Rendement; Ruditapes philippinarum; Skeletonema costatum; Intensive rearing; Marine pond; Growth rate; Yield.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00038/14950/12276.pdf

Modélisation de la croissance de Ruditapes philippinarum dans un système expérimental
Provedor de dados: 5
Autores: Bensch, Alexis; Bacher, Cedric; Baud, Jean-pierre; Martin, Jean-louis.
The growth of Ruditapes philippinarum was modeled with an energetic budget equation. Clams were fed with Skeletonema costatum in experimental units during 6 months. The filtration and respiration terms of the budget were depending on the temperature and the dry weight. The spawning effort was represented by an allometric relation derived from the experimental data. The model simulated the individual growth of the dry weight and of the shell converted into energy during the 6 months of the experiment. The results fitted well with the observations until the loss of energy due to the spawning. After that period the model overestimated the growth which was explained by another spawning loss not taken into account in the model and not noticeable with the...
Tipo: Text
Palavras-chave: Intensive rearing; Spawning; Sensitivity analysis; Ruditapes philippinarum; Energetic modeling; Elevage intensif; Ponte; Analyse de sensibilité; Ruditapes philippinarum; Modéle énergétique.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-3062.pdf

Testage de souches d'huîtres plates Ostrea edulis tolérantes à Bonamia ostreae: élevage contrôlé, écophysiologie et modélisation de la croissance
Provedor de dados: 5
Autores: Haure, Joel.
Since the 1960's, breeding of the flat oyster Ostrea edulis has been under threat from two protozoan parasites, one of which is Bonamia ostrea. Several attempts have been made to introduce flat oysters of the Ostrea genus on the French coast, without much success. The IFREMER genetics laboratory. at Ronce les Bains has used selective pressure with Bonamia ostrea to obtain bonamiosis-resistant strains of the flat oyster, Ostrea edulis. The growth and physiology of these animaIs was studied in an intensive breeding system in which the algae Skeletonema costatum was used as fodder. The growth performance of the tolerant animals was compared with that of non-selected controls over a period of three years (1994,1995,1996). An analysis of the results showed the...
Tipo: Text
Palavras-chave: Ostrea edulis; Skeletonema costatum; Ecophysiologie; Modélisation; Elevage intensif; Bonamia ostreae; Ostrea edulis; Skeletonema costatum; Ecophysiology; Modelisation; Intensive culture; Bonamia ostreae.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00108/21961/19555.pdf