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Ovarian maturation and haemolymphatic vitellogenin concentration of Pacific white shrimp Litopenaeus vannamei (Boone) fed increasing levels of total dietary lipids and HUFA Wouters, R.; Piguave, X.; Bastidas, L.; Calderón, J.; Sorgeloos, P. (2001). Ovarian maturation and haemolymphatic vitellogenin concentration of Pacific white shrimp Litopenaeus vannamei (Boone) fed increasing levels of total dietary lipids and HUFA. Aquac. Res. 32(7): 573-582. dx.doi.org/10.1046/j.1365-2109.2001.00580.x In: Aquaculture Research. Blackwell: Oxford. ISSN 1355-557X; e-ISSN 1365-2109

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Beschikbaar in	Auteurs
VLIZ: Open access 263608 [ download pdf ]

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Trefwoorden

Biological development Composition > Biochemical composition Composition > Chemical composition > Feed composition Cultures > Shellfish culture > Crustacean culture > Shrimp culture Feeding experiments Nutritive value Properties > Biological properties > Sexual maturity Penaeus vannamei Boone, 1931 [WoRMS] Marien/Kust; Brak water

Author keywords

shrimp; maturation; vitellogenin; lipids; HUFA

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Auteurs		Top
Wouters, R. Piguave, X. Bastidas, L.	Calderón, J. Sorgeloos, P.

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Abstract

Two experiments were carried out to determine the quantitative lipid requirements for ovarian maturation of Litopenaeus vannamei (Boone) broodstock. The first experiment tested the effect of total dietary lipid (TDL) levels of 8.1%, 8.8%, 9.8% and 11.2% on the gonadosomatic index (GSI), hepatosomatic index (HSI), survival and body weight. The second experiment tested the effect of total dietary levels of highly unsaturated fatty acids (TDH) 0.6%, 1.3%, 2.0% and 2.7% on the same parameters mentioned above and on the haemolymphatic vitellogenin (vg) concentration. The GSI was higher in females fed 8.1% TDL as compared with those fed 8.8% TDL (P=0.05), and higher in females fed 8.1% and 8.8% TDL than in those fed 9.8% and 11.2% TDL. lncreasing TDH levels led to increasing levels of highly unsaturated fatty acids (HUFA) in the ovaries (r² = 0.999). However, the GSI was not affected by dietary treatments (P > 0.05). The vg concentration was higher in animals receiving 2.0% TDH as compared with those receiving 2.7% TDH. In conclusion, high TDL levels affected ovarian maturation in a negative way, why TDH levels had no pronounced effect on ovarian maturation within the range tested in this study.

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