Reference : Effect of partial or total replacement of forage fish by a dry diet on the quality of re...
Scientific journals : Article
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/14527
Effect of partial or total replacement of forage fish by a dry diet on the quality of reproduction in pikeperch, Sander lucioperca
English
Wang, Neil [> > > >]
Mandiki, S. N. M. [> > > >]
Henrotte, Emilie [> > > >]
Bouyahia, Abdel-Ghany [> > > >]
Mairesse, Guillaume [> > > >]
Rougeot, Carole mailto [Université de Liège - ULg > > Centre de formation et de recherche en aquaculture (CEFRA) >]
Mélard, Charles mailto [Université de Liège - ULg > > Centre de formation et de recherche en aquaculture (CEFRA) >]
Kestemont, Patrick [> > > >]
2009
Aquaculture Research
Blackwell Publishing
40
3
376-383
Yes (verified by ORBi)
1355-557X
Oxford
United Kingdom
[en] Pikeperch ; Broodstock nutrition ; reproduction ; spawning quality
[en] The aim of this preliminary study was to evaluate the influence of different feeding regimes on the quality of reproduction in pikeperch. Three diets were tested: forage fish (FF), a commercial dry feed (DD) and a mix of both (FD). The diets were given to fish throughout a complete reproductive cycle. During the spawning season, couples were injected with human chorionic gonadotropin (hCG) and let to spawn on nests. Proportion of running males, spawning and hatching success and larval quality (weight, length, body protein, total lipid, fatty acid and lipid class compositions and resistances to osmotic shock and starvation stress tests at hatching) were evaluated. The proportion of running male was lower in the DD group than in the FF and FD groups (54% for DD against 76-89% for FF and FD). In addition, 25%, 62.5% and 75% of injected couples gave spawning that hatched in DD, FF and FD groups respectively. Larval quality parameters were not significantly different between treatments. The results indicate that overall quality of reproduction was higher in FF and FD treatments than in DD. It suggests that the dry feed used was not totally adequate for pikeperch reproduction. Relations between breeder reproductive performances and the feed compositions are discussed.
http://hdl.handle.net/2268/14527
10.1111/j.1365-2109.2008.02108.x

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