Fernandez-Mendez C., David F., Darias Maria Jose, Castro-Ruiz D., Nunez Rodriguez Jesus. (2015). Rearing of the Amazon catfish Pseudoplatystoma punctifer (Castelnau, 1855) : weaning with dry and moist diets. In :
Darias Maria Jose (ed.), Amadio S.A. (ed.), Rosenthal H. (ed.). Proceedings of the 4th International Conference of the "Research Network on Amazonian Ichthyofauna" (RIIA) September 30 - October 2, 2014 Cochabamba, Bolivia. Journal of Applied Ichthyology, 31 (no spécial S4), p. 83-87. International Conference of the "Research Network on Amazonian Ichthyofauna" (RIIA), 4., Cochabamba (BOL), 2014/09/30-10/02. ISSN 0175-8659.
Titre du document
Rearing of the Amazon catfish Pseudoplatystoma punctifer (Castelnau, 1855) : weaning with dry and moist diets
Année de publication
2015
Auteurs
Fernandez-Mendez C., David F., Darias Maria Jose, Castro-Ruiz D., Nunez Rodriguez Jesus
In
Darias Maria Jose (ed.), Amadio S.A. (ed.), Rosenthal H. (ed.), Proceedings of the 4th International Conference of the "Research Network on Amazonian Ichthyofauna" (RIIA) September 30 - October 2, 2014 Cochabamba, Bolivia
Source
Journal of Applied Ichthyology, 2015,
31 (no spécial S4), p. 83-87 ISSN 0175-8659
Colloque
International Conference of the "Research Network on Amazonian Ichthyofauna" (RIIA), 4., Cochabamba (BOL), 2014/09/30-10/02
The aim of this study was to compare the effects of dry and moist diets at weaning on growth, survival and incidence of cannibalism in the Amazon catfish Pseudoplatystoma punctifer. Three moist diets (MCD: moist commercial diet; MCPD: moist commercial peptide enriched diet; BLD: bovine liver enriched diet) and a dry diet (CDD: commercial dry diet) were used to feed fingerlings reared in 40-L tanks (30-L water volume; three replicates per treatment; stocking density: initial 1500 larvae per tank, from 18 days post-fertilization, dpf (17 days post-hatch, dph) onwards 210 juveniles per tank; photoperiod 0L:24D) in a recirculation water system (27.9 +/- 0.5 degrees C). Fish were fed Artemia nauplii at 20% of the larval biomass from 4 to 19days post-fertilization (dpf) and then weaned onto the four experimental diets within 3days in the moist diets and within 6days in the dry diet. At 33 dpf, feeding of groups fed the moist diets was switched to the dry diet within 2days. Results showed higher (58.6 +/- 10%) and lower (4.7 +/- 0.7%) survival rates in BLD and CDD groups, respectively, the latter showing the highest occurrence of type II cannibalism. Although weaning was achieved in all dietary groups, the moist diets MCD and MCPD showed better growth results both in terms of total length and wet weight. This study showed that, among the tested diets, the moist diets seem to be more adequate for early juvenile P.punctifer.
Plan de classement
Limnologie biologique / Océanographie biologique [034]
;
Ressources halieutiques [040]
Localisation
Fonds IRD [F B010066483]
Identifiant IRD
fdi:010066481
