%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Slembrouck, Jacques
%A Le Thanh Hung
%A Subagja, J.
%A Legendre, Marc
%T Effects of prey, feeding level, prey accessibility and water aeration on growth and survival of Pangasius hypophthalmus larvae (Siluroidei, Pangasiidae)
%S 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"
%C Jakarta (IDN) ; Can Tho
%D 1998
%E Legendre, Marc
%E Pariselle, Antoine
%L fdi:010020352
%G ENG
%I IRD ; Can Tho University
%K POISSON D'EAU DOUCE ; PISCICULTURE ; LARVE ; NUTRITION ; TAUX DE SURVIE ; CROISSANCE ; ALIMENT POUR ANIMAUX ; DISTRIBUTION SPATIALE ; RATION ALIMENTAIRE ; ETUDE EXPERIMENTALE
%K VIET NAM ; INDONESIE
%P 137-145
%U https://www.documentation.ird.fr/hor/fdi:010020352
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/doc34-08/010020352.pdf
%W Horizon (IRD)
%X 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$. Perturbation of the rearing media by strong water aeration resulted systematically in reduced larval survival rates, whatever the type of prey and feeding rate used... (D'après résumé d'auteur)
%B Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia
%8 1998/05/11-15
%$ 040AQUAC