| Registro completo |
| Provedor de dados: |
OMA
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| País: |
Belgium
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| Título: |
The effect of different levels and sources of dietary phosphatidylcholine on the growth, survival, stress resistance, and fatty acid composition of postlarval <i>Penaeus vannamei</i>
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| Autores: |
Coutteau, P.
Camara, M.R.
Sorgeloos, P.
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| Data: |
1996
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| Ano: |
1996
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| Palavras-chave: |
Penaeus vannamei
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| Resumo: |
The effect of dietary purified phosphatidylcholine (PC) was evaluated on growth, survival, resistance to osmotic shock, and fatty acid composition of early postlarval <i>Penaeus vannamei</i> (0.3 mg initial dry weight) fed semi-purified diets. PC sources used were purified soybean PC (SPC, 95% purity), chicken-egg PC (ECP, 94% purity), and de-oiled soybean lecithin (DSL, 23% PC). The growth response of shrimp fed 1.5% of SPC or 6.5% of DSL was significantly greater than that of shrimp fed a PC-deficient diet, whereas no effect was observed either on survival or stress resistance. Further increasing the dietary level of soybean PC from 1.5% to 3.3% resulted in a significant decrease of the shrimp weight gain. Shrimp receiving 1.5% of PC, provided either as chicken-egg PC, soybean PC, or de-oiled soybean lecithin did not show differences in growth, but had a significantly greater weight gain than that of the shrimp fed 1.5% of the de-oiled soybean lecithin, which indicated that the phospholipids in lecithin other than PC cannot compensate for a PC deficiency in the diet. With increasing dietary level of soybean PC, significantly higher levels of 20:1n-9, total n-6 polyunsaturated fatty acid (PUFA), and 20:5n-3 were present in the total lipids of shrimp, whereas the proportionate levels of 18:1n-9 and total monenes significantly decreased.
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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=2932
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| Fonte: |
%3Ci%3EAquaculture+147%3C%2Fi%3E%3A+261-273
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| Direitos: |
info:eu-repo/semantics/restrictedAccess
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