Experimental broodstock diets as partial fresh food substitutes in
white shrimp Litopenaeus vannamei B.
R. Wouters, B. Zembrano, M. Espin, J. Calderon, P.
Lavens, P. Sorgeloos-2003
Aquaculture
Nutrition, 8(4):
249
Abstract:
In
the first experiment, conducted in a research facility, Litopenaeus
vannamei broodstock were fed either a 100% fresh food control treatment
(FRE, consisting of frozen squid, oyster, mussel and enriched Artemia
biomass in a 2.3:1.4:1.3:1 dry matter ratio) or one of the two treatments in
which 50% [dry matter (DM)] of the fresh food was substituted with
experimental artificial diets: a dry diet based on freeze-dried Artemia
biomass (ART) and a control dry diet (CON). In the second experiment,
conducted in a commercial hatchery, shrimp broodstock were fed either a
fresh ration (FRE, consisting of frozen squid, polychaetes and enriched Artemia
biomass in a 2.5:1.5:1 DM ratio) or the same experimental artificial diets
(ART and CON) replacing 50% of the DM by elimination of polychaetes and Artemia
biomass. In experiment 1 treatments CON and ART produced better results (P=0.05)
than treatment FRE in terms of spawn performance and egg production per
female. In experiment 2 no differences were detected among treatments FRE
and CON whereas treatment ART performed better (P=0.05) in terms of
spawning, egg production per female and spermatophore quality. Broodstock
survival and offspring quality did not differ between treatments in either
experiment.
(INVE,
Hoogveld 93, B-9200 Dendermonde, Belgium, e-mail: r.wouters@inve.be)