Authors : Juan F. Asturiano , Silvia Zanuy , Jesus Ramos , Michael Bruce , Niall Bromage and Manuel Carrillo
Abstract: Dietary factors, such as the origin and quality of the protein used, or the fatty acid composition of broodstock diets has been studied during last years in order to produce good quality fish eggs and larvae. Previous studies in the European sea bass (Dicentrarchus labrax) have shown the effect of the Polyunsaturated Fatty Acids (PUFA) dietary composition on the reproductive performance. In another hand, krill, used as an alternative source of proteins, has improved the eggs and larvae quality in the red seabream (Pagrus major). The present study consisted in the evaluation of the spawning performance and the eggs and larvae quality throughout the two first reproductive cycles of captive European sea bass. Fish were fed with a control diet (ST), or similar diets including krill flour (K) or PUFA-enriched oil (RO). K diet induced, in comparison with ST, a fecundity improvement, at least during the first spawning period after the puberty. However, this krill positive effect on the fecundity improvement was not evident during the second spawning period. On his hand, the RO diet induced the best quality eggs and larvae, but reduced spawning parameters.
Juan F. Asturiano , Silvia Zanuy , Jesus Ramos , Michael Bruce , Niall Bromage and Manuel Carrillo , 2006. Spawning Performance and Eggs and Larvae Quality in European Sea Bass (Dicentrarchus labrax L.) Broodstock Fed with Krill or Pufa Enriched Diets. Journal of Animal and Veterinary Advances, 5: 1133-1142.