Effect of dietary marine lipids on female white bass ova compositions and progeny survival.
We evaluated white bass ovum fatty acid composition as well as embryonic and larval survival after varying n-3 and n-6 long-chain polyunsaturated fatty acid (LC-PUFA) concentrations in maternal diets. Diets containing graded levels (0, 33, 66, or 100%) of squid to menhaden oils were fed daily to apparent satiation to female white bass for 8 weeks prior to spawning. Embryonic survival was negatively related to maternal squid oil intake (P=0.015, R2=0.970). Squid oil-fed broodstock produced ova with decreased 20:5n-3 and increased C18 polyunsaturated fatty acid concentrations, largely reflecting the fatty acid profile of squid oil. Within ovum phospholipid, accumulation of 18:2n-6 may have altered biological function resulting in the lower embryonic survival among ova produced from the squid oil-fed broodstock. Our data suggest the importance of feeding white bass broodstock diets high in total n-3 LC-PUFA (at least 4.0% dry matter), and 20:5n-3-rich lipid sources such as menhaden oil can be effectively utilized by female white bass to produce quality ova.
Lewis
H A
HA
Fisheries and Illinois Aquaculture Center and Department of Zoology, Southern Illinois University Carbondale, Carbondale, IL 62901-6511, USA. hal7e7@siu.edu
Trushenski
J T
JT
Lane
R L
RL
Kohler
C C
CC
D000704:Analysis of Variance; D000818:Animals; D017756:Aquaculture / Q000379:methods; D001492:Bass / Q000378:metabolism*; D002849:Chromatography, Gas; D019587:Dietary Supplements; D004625:Embryo, Nonmammalian / Q000187:drug effects; D015525:Fatty Acids, Omega-3 / Q000008:administration & dosage / Q000032:analysis / Q000494:pharmacology*; D043371:Fatty Acids, Omega-6 / Q000008:administration & dosage / Q000032:analysis / Q000494:pharmacology*; D005260:Female; D010063:Ovum / Q000737:chemistry* / Q000187:drug effects; D016019:Survival Analysis
D015525:Fatty Acids, Omega-3; D043371:Fatty Acids, Omega-6