ISSN:
1439-0426
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Biologie
,
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
The productive performances and morphological traits of 60 000 Dicentrarchus labrax L. weighing 2.4 ± 0.6 g and obtained from intensive rearing were compared with 60 000 sea bass of the same age (110-day-old) weighing 2.1 ± 0.7 g obtained from a fish farm using the mesocosm technique during the larval phase. The trial lasted throughout the fattening period until harvest. Fish from the mesocosm system (SB-II) had a better final survival rate (69%) in comparison to those obtained from the intensive larval system (64.2%) (SB-I). No significant differences emerged between the two groups concerning the specific growth rate (SGR) or the feed conversion ratio (FCR). Although the weights were the same as the SB-I group, the final total length result was higher in the SB-II group (P 〈 0.0001). As for the other morphological traits, the standard length was significantly higher in the SB-II fish, while the maximum body depth showed similar values in the two batches. The greatest abdominal circumference was recorded in SB-I fish.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1046/j.1439-0426.2001.00286.x
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