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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Assessment of "discreet" vertebral abnormalities, bone mineralization and bone compactness in farmed rainbow trout
Aquaculture, Volume 279, No. 1-4, Year 2008
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Description
The present study aimed to evaluate the importance of "discreet" vertebral abnormalities in normally-shaped rainbow trout in relation to vertebral bone condition in French fish farms. A total of 373 trout (262 ± 2 mm in total length) from 20 fish farms sampled were studied. The fish were radiographed and the axial skeleton examined for vertebral abnormalities. Vertebrae from the middle axial region (V32-38) were selected to evaluate vertebral bone condition. Bone mineralization (BM, %) was estimated by the ratio of ash and dry weight. Bone compactness (BC,%) was measured using Bone Profiler 3.23 images software on digitized radiographs of transverse sections (125 ± 10 μm). Statistical analyses were performed to test the relationships between the occurrence of vertebral abnormalities, and BM and BC. The occurrence of affected trout ranged from 0 to 55% depending on the farm. Trout displayed vertebrae with low BM (< 54.6%) and low BC (< 28.1%) in 40% and 55% of the farm, respectively. No relationships were observed between bone condition parameters (BM, BC) and the occurrence of vertebral abnormalities. These results could be explained by a wide and variable plastic response of bone characters (i.e., vertebral abnormalities, BM and BC) to the various rearing conditions in the fish farms sampled. © 2008 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Deschamps, Marie Hélène
France, Paris
Evolution Paris Seine
Kacem, Adnane
Tunisia, Monastir
Institut Supérieur de Biotechnologie de Monastir
Ventura, R.
France, Paris
Evolution Paris Seine
Courty, G.
France, Paris
Evolution Paris Seine
Haffray, P.
France, Rennes
Sysaaf
Meunier, F. J.
France, Paris
Museum National D'histoire Naturelle
Sire, J. Y.
France, Paris
Evolution Paris Seine
Statistics
Citations: 41
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1016/j.aquaculture.2008.03.036
ISSN:
00448486