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- Title
Tub gurnard Chelidonichthys lucerna L.: a new fish species suitable for farming? First answers evaluating the growth of juveniles reared at different stocking densities, welfare and fillet quality.
- Authors
Roncarati, Alessandra; D'Andrea, Mariasilvia; Pilla, Fabio; Felici, Alberto; Melotti, Paolo
- Abstract
A trial was conducted to evaluate the growth performance and survival of Chelidonichthys lucerna. A total of 13 352 180-days old juveniles (5.5 ± 2 g; 5 ± 1 cm) were reared at two different densities (A- EXP = 68 fish m−3; B- FFA = 15 fish m−3) in eight tanks (four tanks per group) for 360 days. The welfare status and meat quality of fish were evaluated for the A- EXP and B- FFA groups in comparison with wild-caught fishery gurnard (C- WID). The survival rate was high for both A- EXP (79%) and B- FFA (93.5%). B- FFA fish had the highest specific growth rate (1.16 vs. 1.07; P < 0.05), and were heavier than A- EXP fish (321 ± 40 g vs .239 ± 44 g; P < 0.01). Rearing conditions did not affect blood metabolites, except for glucose concentrations, which were higher in C- WID ( P < 0.05). The meat quality traits showed that reared groups were fatter (2.8-3.2%) than C- WID (0.94%); total n-3 fatty acids (19.02-19.26%) were lower in reared groups than C- WID (29.99%); and EPA + DHA were similar in all groups (15.1-16.61% vs. 27.99%). Despite the good growth and survival, the final mean weight was below that requested by the market (400-500 g). Future research efforts should focus on reducing the feed conversion rate (3:1).
- Subjects
FISH farming; FISH growth; FISH quality; METABOLITE synthesis; MEAT quality; FISH fillets
- Publication
Aquaculture Research, 2013, Vol 44, Issue 7, p1140
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/j.1365-2109.2012.03238.x