%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Le Thanh Hung
%A Lazard, J.
%A Tu, H.T.
%A Moreau, Yann
%T Protein and energy utilisatoin in two Mekong catfishes, Pangasius bocourti and Pangasius hypophthalmus
%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:010020354
%G ENG
%I IRD ; Can Tho University
%K POISSON D'EAU DOUCE ; PISCICULTURE ; ALIMENTATION ANIMALE ; RATION ALIMENTAIRE ; BESOIN NUTRITIONNEL ; PROTEINE ; ENERGIE ; METABOLISME ; CROISSANCE ; ETUDE COMPARATIVE
%K ASIE DU SUD EST
%K MEKONG COURS D'EAU
%P 167-174
%U https://www.documentation.ird.fr/hor/fdi:010020354
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/doc34-08/010020354.pdf
%W Horizon (IRD)
%X Fish unlike terrestrial animals, use a large amount of protein as an energy source for their energy metabolism. When fed on a high protein raiton, the fish itself may choose which amount of protein in food will be converted into body growth and which will be burned through the catabolism. Therefore, in the study one diet was designed with a high protein content and fed to fish with different levels : 0, 5, 15, 25, 35 and 45 g crude protein kg/d. #P. bocourti$ has a higher growth rate than #P. hypophthalmus$ at the same food intake. However, the higher growth observed in #P. bocourti$ is obviously associated to higher fat accumulation in the body. The protein efficiency, NPU and PER, tends to be reduced at higher protein intake in both species. Energy and protein requirements for maintenance were calculated to be 128 and 92 kJ/kg/day, and 5.16 and 3.24 g/kg/day, and #P. bocourti$ and #P. hypophthalmus$, respectively. #P. bocourti$ has nearly a double protein and energy requirement for maintenance. The event may be linked to the fact that #P. bocourti$ has a higher growth rate and higher ability to synthesise a large amount of body lipid than #P. hypophthalmus. An estimate of protein requirement was in the range of 12-13 and 11-12 g/kg/day in #P. bocourti$ and #P. hypophthalmus$, respectively. The DP/DE ratio was estimated to be 18 and 17 mg/kJ in #P. bocourti$ and #P. hypophthalmus$, respectively. These low DP/DE ratios may be related to the fact that the protein requirement was relatively low in the two species. (Résumé d'auteur)
%B Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia
%8 1998/05/11-15
%$ 040AQUAC