Data/hora: 11/06/2024 14:38:01

Provedor de dados: 	5	
País: 	France	
Título: 	Effect of an herbivorous diet on energy balance of Litopenaeus vannamei at selected ontogenetic stages	
Autores: 	Maldonado, Carlos; Cuzon, Gerard; Guzman, Emilio; Brito, Roberto; Soto, Luis; Arena, Leticia; Gaxiola, Gabriela.	
Data: 	2009-11	
Ano: 	2009	
Palavras-chave: 	Energy; Juveniles; Metabolism; Protein sources; Shrimp.	
Resumo: 	Herbivorous (20% vegetable protein, 40% carbohydrate) and carnivorous diets (40% marine animal protein, 20% carbohydrate) were experimentally tested to assess their effect on the energy balance and energetic substrates utilized by postlarvae (PL's /15 days) and juvenile shrimp (3-6 g) of Litopenaeus vannamei. Postlarval stage 60 (PL60, early juveniles) shrimps fed HeD and CaD diets, then late juveniles (3-6 g) acclimated to the same diets were tested for their respective energy partitioning potential. No significant differences (p&gt;0.05) on growth were obtained in early juveniles (mean final wet weight of 0.19 g). However in late juvenile stages a significant difference (p&lt;0.05) in growth rate was observed. In terms of energy partitioning, both early and late juveniles seem to spend more energy in respiratory metabolism than in the elimination of excretion products. A change in feed composition based on quality protein sources induced some modifications on shrimp's activity measured by heat increment. Shrimps fed with an herbivorous diet showed a higher heat increment. Interestingly, the early stages of L vannamei display a remarkable capacity to assimilate a plant protein-based and a high carbohydrate level diet. Such capacity with a stimulation of genes would lead to a good adaptation of juveniles receiving all-plant diets to sustain growth performances up to a marketable size. The implications of these findings for the shrimp farming feeding costs are briefly discussed. (C) 2009 Elsevier B.V. All rights reserved.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2009/publication-7402.pdf

DOI:10.1016/j.aquaculture.2009.08.007	
Editor: 	Elsevier	
Relação: 	http://archimer.ifremer.fr/doc/00000/7402/	
Formato: 	application/pdf	
Fonte: 	Aquaculture (0044-8486) (Elsevier), 2009-11 , Vol. 296 , N. 1-2 , P. 123-128	
Fonte: 	2009 Elsevier B.V. All rights reserved.