Slembrouck Jacques, Le Thanh Hung, Subagja J., Legendre Marc. (1998). Effects of prey, feeding level, prey accessibility and water aeration on growth and survival of Pangasius hypophthalmus larvae (Siluroidei, Pangasiidae). In :
Legendre Marc (ed.), Pariselle Antoine (ed.). The biological diversity and aquaculture of clariid and pangasiid catfishes in South-East Asia : proceedings of the mid-term workshop of the "Catfish Asia project". Jakarta (IDN) ; Can Tho : IRD ; Can Tho University, p. 137-145. Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia, Can Tho (VNM), 1998/05/11-15.
Titre du document
Effects of prey, feeding level, prey accessibility and water aeration on growth and survival of Pangasius hypophthalmus larvae (Siluroidei, Pangasiidae)
Année de publication
1998
Type de document
Colloque
Auteurs
Slembrouck Jacques, Le Thanh Hung, Subagja J., Legendre Marc
In
Legendre Marc (ed.), Pariselle Antoine (ed.), The biological diversity and aquaculture of clariid and pangasiid catfishes in South-East Asia : proceedings of the mid-term workshop of the "Catfish Asia project"
Source
Jakarta (IDN) ; Can Tho : IRD ; Can Tho University, 1998,
p. 137-145
Colloque
Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia, Can Tho (VNM), 1998/05/11-15
Two feeding experiments were carried out on Pangasius hypophthalmus larvae reared in a recirculating water system during 8 days. The first experiment was done at the Can Tho University (Vietnam) and the second at the RIFF Sukamandi station (Indonesia). The main objective of the first experiment was to compare survival and growth peformance of P. hypophthalmus larvae fed with either Moina sp. or Artemia nauplii and with either strong or moderate aeration. Strong aeration was tested in order to homogenise prey repartition in the water column, since Artemia and Moina sp. tended normally to be concentrated in corners or at the bottom of the tanks. Two feeding rates (150 and 4000% of fish biomass) were tested. The second experiment aimed at an evaluation of optimal feeding level with Artemia nauplii, by considering growth, number of ingested preys and survival rates of larvae. Each of three feeding levels (R1, R2 and R3) were tesed at three different fish stocking densities (10, 30 and 90 larvae/L). The feeding level R1 was adjusted daily according to a pre-established model of the number of Artemia ingested as a function of age in P. hypophthalmus larvae. The rations R2 and R3 were respectively 3 and 9 times greater than R1. The prey asscessibility (number of prey per litre), which varied as a function of the different combinations of feeding level x fixh stocking density, was also considered as a parameter that could influence larval growth and survival. The results of the first experiment indicated that both Artemia and Moina sp. could be used as a first feed for P. hypophthalmus larvae. However, larvae fed Artemia nauplii presented a faster growth rate than those fed Moina. Perturbation of the rearing media by strong water aeration resulted systematically in reduced larval survival rates, whatever the type of prey and feeding rate used... (D'après résumé d'auteur)
Plan de classement
Aquaculture [040AQUAC]
Descripteurs
POISSON D'EAU DOUCE ; PISCICULTURE ; LARVE ; NUTRITION ; TAUX DE SURVIE ; CROISSANCE ; ALIMENT POUR ANIMAUX ; DISTRIBUTION SPATIALE ; RATION ALIMENTAIRE ; ETUDE EXPERIMENTALE
Description Géographique
VIET NAM ; INDONESIE
Localisation
Fonds IRD [F A010020339] ;
Montpellier (Centre IRD)
Identifiant IRD
fdi:010020352
