Effects of dietary n-3 and n-6 fatty acids levels on egg and larval quality of Eurasian perch

Henrotte E., Overton J.L., Kestemont P.

Date de parution: juillet 2008
Volume: 32
Number: 2 suppl.
Pagination: 271-272
Editeur: Société Française d’Ichtyologie
doi: https://doi.org/10.26028/cybium/2008-322SP-139

Three groups of 40 perch breeders were reared in order to study the effects of 3 different levels of dietary n-3 and n-6 fatty acids on egg quality. Two experimental diets, R1 and R2 (n-3/n-6 = 0.13 and 35.54, respectively), were compared to one commercial food, R3 (n-3/n-6 = 3.48). Spawning and fertilization rates were high for diets R1 and R3, which displayed a n-3/n-6 ratio of 0.77 and 2.34 in the eggs, respectively, by comparison with R2 (n-3/n-6 = 4.87), which produced low reproductive performances. We can conclude that dietary n-3 and n-6 FA levels influence egg and larval quality of Eurasian perch.

Mots-clés: Egg quality - Fatty acids - Perca fluviatilis
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