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...
| Main Authors: | , , , |
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| Format: | Conference Object |
| Language: | English |
| Published: |
ICES - C.M. 1991/F:34, pp.1-12
1991
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| Subjects: | |
| Online Access: | https://archimer.ifremer.fr/doc/00170/28129/26346.pdf https://archimer.ifremer.fr/doc/00170/28129/ |
| Summary: | 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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