Dietary intake of probiotics and maslinic acid in juvenile dentex (Dentex dentex L.): effects on growth performance, survival and liver proteolytic activities
Identifieur interne : 000D26 ( Main/Exploration ); précédent : 000D25; suivant : 000D27Dietary intake of probiotics and maslinic acid in juvenile dentex (Dentex dentex L.): effects on growth performance, survival and liver proteolytic activities
Auteurs : M. C. Hidalgo [Espagne] ; A. Skalli [Espagne] ; E. Abellán [Espagne] ; M. Arizcun [Espagne] ; G. Cardenete [Espagne]Source :
- Aquaculture Nutrition [ 1353-5773 ] ; 2006-08.
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Abstract
Two feeding trials were carried out to evaluate the efficiency of probiotics and maslinic acid, on growth and survival of juvenile dentex; liver proteolytic activities were also investigated in the second trial. For experiment 1, triplicate groups were fed six diets with two probiotics (Bacillus toyoi, T, and B. cereus, E) at increasing levels (0.5, 1 and 2 g kg−1 diet) and a control diet. Growth and feed conversion were not significantly influenced by the probiotics. The diet T1 produced the lower mortality, whereas diet E1 rendered the higher mortality. It was concluded that no significant effects on growth and survival were found following the addition of two kinds of probiotics to dentex diets. However, the diet E0.5 showed a tendency to ameliorate the growth and feed utilization of the diet. In a second trial, triplicate groups were fed four diets with increasing levels of maslinic acid (0, 20, 40 and 80 mg kg−1 diet). Growth of fish given diets with the highest level of maslinic acid (D80) was slightly but not significantly lower than those from the other groups. Furthemore, mortality of fish fed diet D40 was the lowest. Changes in liver proteasome and endoprotease activities measured on sodium dodecyl sulphate (SDS)/gelatin gels were also detected in a dose‐dependent manner. It was concluded that a dietary maslinic acid at a level of 80 mg kg−1 diet seems to be too high for juvenile dentex to maintain a maximal growth and survival rate.
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DOI: 10.1111/j.1365-2095.2006.00408.x
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For experiment 1, triplicate groups were fed six diets with two probiotics (Bacillus toyoi, T, and B. cereus, E) at increasing levels (0.5, 1 and 2 g kg−1 diet) and a control diet. Growth and feed conversion were not significantly influenced by the probiotics. The diet T1 produced the lower mortality, whereas diet E1 rendered the higher mortality. It was concluded that no significant effects on growth and survival were found following the addition of two kinds of probiotics to dentex diets. However, the diet E0.5 showed a tendency to ameliorate the growth and feed utilization of the diet. In a second trial, triplicate groups were fed four diets with increasing levels of maslinic acid (0, 20, 40 and 80 mg kg−1 diet). Growth of fish given diets with the highest level of maslinic acid (D80) was slightly but not significantly lower than those from the other groups. Furthemore, mortality of fish fed diet D40 was the lowest. Changes in liver proteasome and endoprotease activities measured on sodium dodecyl sulphate (SDS)/gelatin gels were also detected in a dose‐dependent manner. It was concluded that a dietary maslinic acid at a level of 80 mg kg−1 diet seems to be too high for juvenile dentex to maintain a maximal growth and survival rate.</div></front></TEI><affiliations><list><country><li>Espagne</li></country><region><li>Andalousie</li></region><settlement><li>Grenade (Espagne)</li></settlement><orgName><li>Université de Grenade</li></orgName></list><tree><country name="Espagne"><region name="Andalousie"><name sortKey="Hidalgo, M C" sort="Hidalgo, M C" uniqKey="Hidalgo M" first="M. C." last="Hidalgo">M. C. Hidalgo</name></region><name sortKey="Abellan, E" sort="Abellan, E" uniqKey="Abellan E" first="E." last="Abellán">E. Abellán</name><name sortKey="Arizcun, M" sort="Arizcun, M" uniqKey="Arizcun M" first="M." last="Arizcun">M. Arizcun</name><name sortKey="Cardenete, G" sort="Cardenete, G" uniqKey="Cardenete G" first="G." last="Cardenete">G. Cardenete</name><name sortKey="Skalli, A" sort="Skalli, A" uniqKey="Skalli A" first="A." last="Skalli">A. Skalli</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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