Data/hora: 05/06/2024 08:00:03

Provedor de dados: | 27
País: | Belgium
Título: | The effect of different levels and sources of dietary phosphatidylcholine on the growth, survival, stress resistance, and fatty acid composition of postlarval &lt;i&gt;Penaeus vannamei&lt;/i&gt;
Autores: | Coutteau, P.; Camara, M.R.; Sorgeloos, P.
Data: | 1996
Ano: | 1996
Palavras-chave: | Penaeus vannamei.
Resumo: | The effect of dietary purified phosphatidylcholine (PC) was evaluated on growth, survival, resistance to osmotic shock, and fatty acid composition of early postlarval &lt;i&gt;Penaeus vannamei&lt;/i&gt; (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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2932
Fonte: | %3Ci%3EAquaculture+147%3C%2Fi%3E%3A+261-273
Fonte: | info:eu-repo/semantics/restrictedAccess