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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Identificadores
URI: http://hdl.handle.net/10508/15568Visitar enlace: https://doi.org/10.24099/vet.a ...
ISSN: 0372-5480
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Ayala, M.D. (María Dolores); García-Saorín, A.; Martínez-Torres, H.; García-Alcázar, A. (Alicia); Arizcun-Arizcun, M. (Marta)Date
2019Tipo
research articlePalabras clave
Sparus aurataorganic diet
body growth
white muscle
muscle cellularity
Résumé
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.