The impact of seasonal alteration in the lipid composition of broodstock diets on egg quality in the European sea bass

Abstract

Groups of European sea bass Dicentrarchus labrax L., broodstock were fed two pelleted, lipid‐enriched diets [maize oil, low essential fatty acid (EFA) or fish oil, high EFA]. Those fed the high EFA diet for 12 months or only during vitellogenesis (September to February) with the low EFA diet fed for the remaining 6 months, showed improved egg quality and higher hatching rates when compared to two groups fed the high EFA diet during either previtel‐logenesis (February to September) or the spawning period (February to April). The higher quality eggs contained higher levels of total n‐3 fatty acids, including increased levels of both docosahexaenoic acid (DHA) and eicosapaentaenoic acid (EPA). High levels of triacylglycerol (TAG) were linked with the poorer quality eggs from those groups fed the low EFA diet during the period of vitellogenesis. The present work identifies vitellogenesis as the period in the maturation during which EFA are incorporated most effectively into the developing oocytes.

Effect of diet (fatty acid and protein) content during spawning season on fertility, eggs and larvae quality of common porgy (Pagrus pagrus, Linnaeus 1758)

“…The results of this experiment indicate that the spawning quality of common porgy (Pagrus pagrus), which is a limiting factor for seed production of this species, is directly affected by the levels of n-3 HUFA in the diets of broodstock. These results are consistent with those found by Watanabe et al (1984Watanabe et al ( a,b,c, 1985 for the Japanese sea bream (Pagrus major), Furuita et al (2000Furuita et al ( , 2002 For the sole Pacific (Paralichthys olivaceus), Cerdá et al (1994b), Navas et al (1997) and Bruce et al (1999) for the sea bass (Dicentrarchus labrax), Harel et al (1994), Rodriguez et al (1998), Almansa et al (1999Almansa et al ( , 2001 and Domarco (2001) for sparus aurata. Given these characteristics, most of the essential fatty acids of eggs may be modified during the spawning season and thus affect the egg spawning quality (Almansa et al, 1999).…”

“…In some fish species, LC-PUFA (Long chain polyunsaturated fatty acids) in broodstock nutrition increase fertility, fertilization and egg quality. This has been described in species such as sea bream, Sparus aurata (Mourente and Odriozola, 1990, Fernandez-Palacios et al, 1995, halibut, Hippoglossus hipoglossus (Bruce et al, 1993;Mazorra et al, 2003), sea bass, Dicentrarchus labrax (Cerdá et al, 1994b;Carrillo et al, 1995;Navas et al, 1997), Japanese sea bream, Pagrus major (Watanabe et al, 1984a,b,c,d;1985 a,b;1991), trout rainbow, Oncorhynchus mykis (Washburn et al, 1990;Choubert and White, 1993;Choubert et al, 1998) Atlantic salmon, Salmo salar (Eskelinen, 1989;Christiansen and Torrissen, 1997), coho salmon, Oncorhynchus kisutch (Hardy et al, 1984;, tilapia, Oreochromis niloticus (Cumaratunga and Mallika, 1991;Gunasekera et al, 1995Gunasekera et al, , 1996aGunasekera et al, , b, 1997Siddiqui et al, 1998), common carp Cyprinus carpio (Manissery et al, 2001)Japanese flounder, Paralichthys olivaceus (Furuita et al, 2003, ) yellowtail Seriola quinqueradiata (Agius et al, 2001), Senegal sole, Solea senegalensis (Dinis et al, 1999), milkfish, Chanos chanos (Emata et al, 2000), turbot, Scophthalmus maximus (Lavens et al, 1999), and the catfish, Ictalurus punctatus (Torrans and Lowell, 2001). The aim of this study is to determine how food quality of broodstock could affect fertility and egg quality.…”

Total lipid in the broodstock diet did not affect fatty acid composition and quality of eggs of sea bass (<i>Dicentrarchus labrax</i> L.)

“…The work presented in this article was the first of a set of experiments devoted to observing the influence of the fatty acid composition of the diet on the reproductive performance of the sea bass (see also Navas et al, 1997;Navas et al, 1998). Our initial hypothesis was that a high lipid content in the artificial diets could provide a sufficient quantity of different classes of fatty acids, particularly n-3 fatty acids, to improve the spawning performance of sea bass, which was reported to be very low in fish fed with artificial diets poor in n-3 fatty acids.…”

Rétention Des Ovules Après Ovulation Dans La Cavité Ovarienne De La Carpe Herbivore : Composition Des Ovules Et Capacité De Développement Des Œufs Et Des Alevins.

“…Chez bon nombre de poissons, ces composés semblent être essentiels pour l'accomplissement de la fécondation et l'initiation de l'embryogenèse (SHIMMA et al, 1978 ;PARRISH et al, 1994 ;WIEGAND, 1996 ;TOCHER et al, 1996 ;NAVAS et al, 1997).…”