| Registro completo |
| Provedor de dados: |
OMA
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| País: |
Belgium
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| Título: |
The effect of dietary n-3 HUFA and 22:6n-3/20:5n-3 ratio on white shrimp larvae and postlarvae
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| Autores: |
Wouters, R.
Van Hauwaert, A.
Naessens, E.
Ramos, X.
Pedrazzoli, A.
Lavens, P.
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| Data: |
1997
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| Ano: |
1997
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| Resumo: |
The influence of varying dietary n-3 HUFA concentrations and ratios of 22:6n-3/20:5n-3 (DHA/EPA) on culture performance and fatty acid composition of white shrimp (<i>Penaeus vannamei</i>) larvae and postlarvae was verified in two experiments. In a first experiment, shrimp (zoea 2-postlarvae 11) were fed rotifers (<i>Brachionus plicatilis</i>) and <i>Artemia</i> spp. nauplii that were enriched with different self-emulsifying concentrates: one HUFA-free coconut oil (T1), and three iso-HUFA concentrates with DHA/EPA ratios of 0.6 (T2), 2 (T3) and 4 (T4), respectively. In a second experiment, postlarvae were fed for 25 days (starting from postlarvae 10) on isolipidic semi-purified diets: one HUFA-free control (TA), and four iso-HUFA diets with DHA/EPA ratios of 0.6 (TB), 0.9 (TC), 1.8 (TD) and 3.64 (TE), respectively. Experiment 1 revealed no significant differences in production characteristics, except that resistance to a counter-current stress in postlarvae 11 was significantly lower in T1 than in T2 and T3 (p<0.05). In experiment 2, postlarvae of TA had a significantly lower dry weight than the other treatments at the end of the trial. The effect of the DHA/EPA ratio within the experimental limits could not be demonstrated. Analysis of the fatty acid composition of the shrimp showed notable changes of n-3 HUFA concentrations during the metamorphosis from mysis to postlarvae, and a different response to the dietary concentrations of DHA compared to EPA.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2987
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| Fonte: |
%3Ci%3EAquacult.+Int.+5%3C%2Fi%3E%3A+113-126
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| Direitos: |
info:eu-repo/semantics/restrictedAccess
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