Showing papers in "Aquaculture in 2005"

TL;DR: The geographic distribution of each disease and the main host species affected, together with the biochemical and antigenic diversity existing in the aetiologic agents are described and the current status in the development of vaccination strategies is addressed.

TL;DR: Results showed that substitution by vegetable oils of up to 60% fish oil in diets for gilthead seabream does not affect growth and feed utilization even after a long feeding period, however, 80% substitution of fish oil significantly reduced growth.

TL;DR: Partial or total replacement of fish meal by a mixture of plant protein (PP) sources (corn gluten, wheat gluten, extruded peas, rapeseed meal and sweet white lupin) balanced with indispensable amino acids was examined in juvenile gilthead sea bream over the course of a 6-month growth trial as mentioned in this paper.

TL;DR: It is elucidates that probiont viability could probably influence the immune responses they induce and is found to induce better phagocytic activity and complement activity compared to that of the non-viable heat-killed form.

TL;DR: High dietary lipid levels above 15% produced little practical benefit because of higher fat accretion in cobia, and the 25% group had the highest values.

TL;DR: The results show that the Adriatic sturgeon is not only capable of digesting fat and protein, like any other carnivorous fish, but can also digest carbohydrates at levels characteristic of an omnivore.

TL;DR: The efficacy of clove oil as an anesthetic was evaluated in juvenile European sea bass and gilthead sea bream, and was compared to the commonly used 2-phenoxyethanol through a series of experiments simulating aquaculture activities.

TL;DR: According to the results, genetic factors as well as the influence of extrinsic factors such as feeding regimes and/or exercise may determine significant variations of some structural and flesh quality parameters of the sea bass.

TL;DR: After 150 days of re-feeding period with a 100% fish oil diet, DHA levels were restored in those fish previously fed diets containing vegetable oils, but EPA levels remained lower when compared with fish fed 100% FO diet.

TL;DR: In conclusion, lactic acid fermentation improved the nutritional value of WF by partly eliminating feed allergen and soy factor that restrict the absorption of lipid by Atlantic salmon.

TL;DR: It is suggested that, while stocking density can influence the welfare of Atlantic salmon in production cages, this is only one influence on their welfare and on its own cannot be used to accurately predict or to control welfare.

TL;DR: Apparent digestibility coefficients (ADCs) of nutrients and energy in selected feed ingredients were determined for Nile tilapia using a reference diet with chromic oxide indicator and test diets that contained 70% reference diet, by weight, and 30% of the test ingredient being evaluated.

TL;DR: It was concluded that there was still additive genetic variance in the GIFT population established in Malaysia, and that it was capable of further response to selection.

TL;DR: Dietary supplements such as immunostimulants and prebiotics hold promise as a potential replacement of antibiotics in maintaining fish health and dietary supplementation of partially autolyzed brewers yeast also may enhance growth performance under chronic infection of mycobacteria.

TL;DR: The gametogenic cycle of Crassostrea gigas was examined in controlled conditions over one year, with a focus on the initiation of gametogenesis, and the role of temperature and photoperiod in the regulation of oyster reproduction was analysed.

TL;DR: Adoption of an appropriate slowly increasing urea feeding rate prevented the accumulation of ammonia in the medium as well as its well-known inhibition of biomass growth; therefore, the use of urea should be recognized as a possible way to decrease the costs of a large-scale plant for the production of this cyanobacterium.

TL;DR: The adequate dietary Se concentration for growing grouper estimated by weight gain and by linear regression of whole-body Se retention of the fish is about 0.7 mg Se/kg.

TL;DR: Temperature, salinity, and carbon dioxide addition effects on growth and biochemical composition of C. wighamii affected growth and biomass and lipid and carbohydrate content were higher at lower temperatures while protein was unaffected, and these results should be taken into consideration when evaluating the nutritional value of this microalga for marine invertebrate larvae.

TL;DR: The microorganisms tested in this study have tremendous potential as probiotics for commercially produced H. midae, shown that Haliotis midae fed a probiotic-supplemented diet have an improved survival and growth rate compared to animals not fed probiotics.

TL;DR: In a number of cases l -carnitine supplementation led to better growth and changes in lipid utilization while in others no effect could be detected, and the levels of this rather expensive substance required might not be economically justifiable.

TL;DR: This review examines the implementation of the NA in Norway and attempts to evaluate the success of the actions taken in terms of the lice loads found on wild salmonids in 1998–2002.

TL;DR: It is indicated that an increase of dietary lipid level can improve growth and protein utilization, and the diet containing 42% protein with 19% lipid would be suitable for optimum growth and effective protein utilization of bagrid catfish fingerlings.

TL;DR: The results of this study suggest that the inclusion of astaxanthin, from shrimp shell meal, in red porgy commercial diets significantly improves skin coloration and markedly enhances the commercial value of this cultured species.

TL;DR: The Dunaliella extract showed beneficial effects as a shrimp feed supplement and color intensity of boiled shrimp was highest in groups fed 200–300 mg of the DunalIElla extract/kg diet.

TL;DR: Results showed a favorable correlation between the estimated mean full-sib family breeding values for harvest weight and pond/tank survival indicating that selecting for growth will cause a positive correlated response in overall survival.

TL;DR: This study suggests that salmon cultured on diets based on fish meal and oil (HFO) attain flesh dioxin concentrations that are significantly lower than in fish fed the HFO diet throughout.

TL;DR: It is concluded that acute stress causes cellular alteration in rainbow trout gastrointestinal tract, and changes in adherent intestine microbial population level and compositions together with increased intestinal paracellular permeability following acute stress suggest a possible increased susceptibility to bacterial infections after stress and that active feeding may have a protective role.

TL;DR: Temperature is an important control factor for reproduction of S. senegalensis, and it is suggested it can be used to properly manage controlled captive reproduction of this species.

TL;DR: The data indicated that the adequate dietary AA concentration for optimum growth of juvenile grouper is 45.3 mg AA/kg diet, and six times the optimum dietary AA level was needed to enhance the nonspecific immune responses and maintain survival of the fish infected with bacteria.

TL;DR: The results showed that lactic and acetic acids, and not the bacteriocins, are responsible for the effects (inhibitory or stimulatory depending on the concentrations considered) in all the cases studied.