Effect of stripping frequency on turbot spawn quality.

In production operations the application of daily examination of each female of broodstock should be a determinant progress in hatchery management in terms of fry output. The eggs expelled shortly after ovulation by means of a systematic fivefold a week stripping attempt of females, presented a high viability rate (72%) compared to that of eggs collected twice a week (46%) whereas the treatments did not have any effect on female fecundity. Increase of the stripping rhythm brought the hatching rates and broodstock fertilities respectively from 11% to 35% and from 20,000 to 65,000 larvae/kg of spawning female. The enhancement of egg quality and of the resulting larva production is discussed.

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Fauvel Christian, Omnes Marie-Helene, Suquet Marc, Normant Yvon (1991). Effect of stripping frequency on turbot spawn quality. ICES - C.M. 1991/F:34, pp.1-12. https://archimer.ifremer.fr/doc/00170/28129/

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