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Early weaning of cuttlefish (Sepia officinalis, L.) with frozen grass shrimp (Palaemonetes varians) from the first day after hatching Sykes, A.V.; Gonçalves, R.A.; Andrade, J.P. (2013). Early weaning of cuttlefish (Sepia officinalis, L.) with frozen grass shrimp (Palaemonetes varians) from the first day after hatching. Aquac. Res. 44(12): 1815-1823. https://dx.doi.org/10.1111/j.1365-2109.2012.03186.x In: Aquaculture Research. Blackwell: Oxford. ISSN 1355-557X; e-ISSN 1365-2109

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Beschikbaar in	Auteurs
VLIZ: Non-open access 307141 [ aanvragen ]

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Trefwoorden

Aquaculture Aquaculture > Aquaculture General Aquaculture > Breeding/Husbandry Exploitable Scientific Result Industry Scientific Community Scientific Publication Marien/Kust

Author keywords

cuttlefish; Sepia officinalis; grass shrimp; Palaemonetes varians; earlyweaning; frozen food

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Project	Top | Auteurs
Association of European marine biological laboratories

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Auteurs		Top
Sykes, A.V. Gonçalves, R.A. Andrade, J.P.

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Abstract

The suitability of early weaning cuttlefish using frozen grass shrimp, and its effects on growth and mortality was determined in a 50-day experiment. Three food groups were used. One group (C) was fed with live prey until 25th DAH and weaned with frozen prey until the end of the experiment. In the other two groups, weaning started at the fifth DAH (W5) and first DAH (W1), also with frozen diet. Significant differences were found between C and the remaining treatments (P < 0.05) for mean wet weight (MWW), instantaneous growth rate (IGR), biomass (B) and mortality at the 25th and the 50th DAH. Despite the lower growth (~1/3 of the achieved with live food) and higher mortality (3% obtained by C versus 23% in the W1 and W5 groups), C cuttlefish presented a similar weight gain tendency to W1 and W5 groups after weaning. This is the first record of early acceptance (at the first DAH) of frozen food by cuttlefish hatchlings. These differences could be related with digestive enzymes of cuttlefish and prey, changes in nutritional composition and amount of captured prey, etc. Future research should also address the effects of this early weaning on cuttlefish life cycle.

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