The influence of the organic versus conventional feeding on the growth and survival of gilthead sea bream, Sparus aurata L. juveniles.
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Autor/esAyala, M.D. (María Dolores); García-Saorín, A.; Martínez-Torres, H.; García-Alcázar, A. (Alicia); Arizcun-Arizcun, M. (Marta)
Palabras claveSparus aurata
Sparus aurata specimens of 11 months of age (mean weight: 90.2 g, mean length: 18.3 cm) were classified in two diet groups: one control group was fed with conventional diet, and one experimental group was fed with an organic diet. The body and muscle parameters were studied at 0, 41 and 71 days of the experiment. The results showed the highest values of body length and weight as well as the best biological feed conversion rates in the organic group. The transverse area of white muscle, the hyperplasia and the muscle fibres density were also higher in the organic than in the conventional group (P>0.05). In contrast, hypertrophy was greater in the conventional than in the organic group (P<0.05). Survival was 100% in both groups. In conclusion, the organic feeding regime was more favourable for growth than conventional feeding.