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Effect of dietary protein level on growth and energy utilization by Litopenaeus stylirostris under laboratory conditions ArchiMer
Gauquelin, F; Cuzon, Gerard; Gaxiola, G; Rosas, C; Arena, L; Bureau, D; Cochard, Jean-claude.
A study was conducted using a bioenergetics approach to generate information on energy requirement and feed utilization of Litopenaeus stylirostris. Animals (initial mean weight 21 +/- 1 g were fed ad libitum six experimental diets, ranging from 25 to 58% crude protein (CP), for 50 days. Weight gain increased from 21 to 30 g with increasing dietary protein level. Survival rates averaged 80%. Basal metabolism (HeE) and heat increment of feeding (HiE) were monitored using respirometry. HeE was on average I U shrimp(-1) day(-1) or 47 U kg live weight(-1) day (22 kJ/kg(0.8). d(-1)), slightly more than what is observed in fish. HiE averaged 0.2 W/sbrimp(-1) day(-1) or 10 W kg live weight(-1) day(-1) (4 kJ/kg(0.8) d(-1)). It represented 3 1 % and 12%...
Tipo: Text Palavras-chave: Respiration; Excretion; Growth; Dietary protein; L. stylirostris.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-6263.pdf
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Résistance de la crevette Litopenaeus stylirostris à la bactérie pathogène Vibrio penaeicida : Physiologie, immunologie et pathologie comparées d’une population sélectionnée sur un critère de survie aux épisodes de mortalité et d’une population témoin non sélectionnée. ArchiMer
De Decker, Sophie.
The New-Caledonian shrimp industry is based on the controlled reproduction of the shrimp Litopenaeus stylirostris, a species which was introduced in the 80s. The major difficulty to which the industry has been faced for 10 years is the occurrence of the “Syndrome 93”, which corresponds to mortality phases when the temperature falls down in April-May-June. This mortality is associated to the pathogenic bacteria Vibrio penaecida. An experiment of genetic selection based on the criterion ofsurvival to Syndrome 93 has been conducted at the Laboratory of Aquaculture of New Caledonia. The 3rd selected generation had demonstrated very encouraging results (survival rates improved by around 20% in experimental infections with V. penaeicida). These results have not...
Tipo: Text Palavras-chave: Amélioration génétique; L. stylirostris; Résistance; Syndrome 93; Genetic improvement; L. stylirostris; Disease resistance; Syndrome 93.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/00204/31527/29943.pdf
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