Showing papers in "Aquaculture in 2010"

TL;DR: The application of probiotics and prebiotics may result in elevated health status, improved disease resistance, growth performance, body composition, reduced malformations and improved gut morphology and microbial balance.

TL;DR: The World Wildlife Fund is facilitating a dialogue on impacts of salmon Aquaculture to establish the state of knowledge in seven subject areas associated with the industry: benthic impacts, nutrient loading, escapees, chemical inputs, diseases, feeds and social issues and to establish international standards for salmon aquaculture practices.

TL;DR: Results suggest that negative effects of hatchery rearing are not just a concern but undeniably present in many aquaculture species, and there is a chance to improve hatchery practices and mitigate the negative effects on wild stocks, although scientific data supporting the positive effect on stock enhancement are largely missing at this moment.

TL;DR: The results showed that mean final weight, specific growth rate (SGR), feed conversion ratio (FCR) and protein efficiency ratio (PER) remained unaffected by MOS supplementation of fish fed FM or SBM diets, and dietary SBM exerted a greater effect on gut microbiota than dietary MOS.

TL;DR: It is shown that controlling the concentration of particles in superintensive shrimp culture systems can significantly improve water quality and shrimp production and an environmentally friendly and potentially economical plant-based diet can produce results comparable to a fish-based feed in super intensive shrimpculture systems.

TL;DR: The optimum growth of fry tilapia was obtained at 45% CP, while fingerling and advanced juvenile showed optimum growth performance with the 35%-CP diet, and Hematological variables were significantly affected by protein level, fish weight, and their interaction except for serum lipids which was not significant.

TL;DR: Meagre juveniles appear to have similar lipid requirements with other Mediterranean species and excess dietary lipid level should be avoided, since the increase from 17% to 21% resulted in higher fat accretion and impaired growth performance.

TL;DR: In this experiment, Previda™ supplementation resulted in significant improvements in growth performance and immunological responses, even as compared to other commercially available prebiotics.

TL;DR: It is found that prior to the 1990s, seahorse aquaculture was plagued by problems with disease and feeding, and in the late 1990s and early 2000s there was considerable expansion in the number and size of Aquaculture operations and the number of species in culture.

TL;DR: The effect of dietary application of a commercial probiotic (Bacillus spp.) and mannan oligosaccharides (MOS), used singularly and combined, on the survival, growth performance and feed cost-benefit of larval Homarus gammarus was assessed.

TL;DR: The traditional culture-based techniques and the 16S rDNA sequencing method were used to investigate the microbial community of the intestinal contents and mucosal layer in the intestine of yellow catfish, and the abundance and diversity of bacterial populations in mucus might be different from the microbiota in gut contents.

TL;DR: It can be concluded that supplementation of FS, KM and SM is as effective as CAA to maintain amino acid balance and can act as attractants in high SPC based diets for maintaining normal feeding behavior, growth performance, health and welfare of juvenile red sea bream.

TL;DR: In this work the differences in activity and gene expression patterns could only be attributed to the presence of yeast, assuming a possible involvement of superoxide anion retention in fish larvae, which could represent importance to the host to increase cell or tissue responsiveness to growth- and/or differentiation-enhancing factors.

TL;DR: It is shown that gut health is an important production parameter for Atlantic salmon and that putative receptor blocking, mannan oligosaccharide rich product (MOS) in Atlantic salmon fed extruded diets containing extracted soybean meal or a combination of SBM and extracted sunflower meal had no detectable effects.

TL;DR: This document offers a short review of microbial groups important for intensive marine aquaculture and descriptions of three methods for quantifying their abundance and describes an experiment during which these methods were used to monitor the effects of partial biofloc removal on microbe abundance.

TL;DR: It is shown that higher stocking density resulted in higher cortisol levels in both control and stressed groups (after netting), but the effect of stocking density on the acute stress response was less pronounced at the higher feeding level.

TL;DR: Under laboratory-scale conditions, two types of bioflocs were used as a feed ingredient for Pacific white shrimp under recirculating aquaculture systems with seawater renewal and dietary treatments had some impact on shrimp performance.

TL;DR: This represents the first successful elimination of fish meal and fish oil in aquafeeds for cobia, and the consistent, successful replacement of 94% of the fish meal in the other diets is actually more promising to the future as they solely utilized commodities traded (soy products) as replacement sources.

TL;DR: Tilapia is a rather tolerant species for dietary AFB1 exposure up to 1641 μg/kg diet during 20 weeks, which indicates that long-term exposure for more than 15 weeks is necessary to evaluate aflatoxicosis in tilapia.

TL;DR: The essential oil of L. alba could be used at concentrations ranging from 100 to 500 mg L − 1 to induce anesthesia (stage 4) in silver catfish and the time required for recovery was shorter when lower concentrations of the oil were used.

TL;DR: Lower digestibility values of carbohydrates and lipids, especially of polar lipids observed in fish fed SBM diet were improved by the fermentation, and these values were superior to those of fish fed FM diet and FSBM-2 diet.

TL;DR: Results of the present study indicated that protein from CM could substitute less than 20% for fish meal protein without influencing the growth, survival, digestion and serum lysozyme of Japanese seabass.

TL;DR: The variation in cortisol levels within treatment is suggestive of a functional role in control of intermediary metabolism during fasting in R. quelen, and the early and large depletion of liver glycogen in fasted fish also suggests that this is a primary energy source in periods of food restriction.

TL;DR: Essential fatty acid composition, in particular EPA, DHA and ARA in salmon flesh and liver were not negatively affected by dietary treatment and there was some evidence of increased retention and/or synthesis of LC-PUFA.

TL;DR: Weight gain generally improved with increasing protein levels, but no significant difference was observed in lipid levels.

TL;DR: The results suggested that dietary ARA, especially moderate ARA level, significantly enhanced growth and immune response and modified the chemical composition of whole body and liver of Japanese seabass juvenile.

TL;DR: It is demonstrated that selective breeding to improve survival during the first summer can be successfully implemented and should lead to rapid gains, and selection on survival did not have any impact on growth, although it did have one on yield.

TL;DR: Lab-scale research was conducted in recirculating aquaculture systems to determine the long-term impacts of nitrate on shrimp growth, survival, total mass of shrimp per system, antennae length, and tissue pathology.

TL;DR: The analysis suggests that the value of the benefits to the public by adopting the IMTA configurations can be larger than the gains in farm's profitability, and this range of values reflects the gains of adopting IMTA on economic value of aquaculture.

TL;DR: A better tolerance to farming conditions was also found as evidenced by the lower expression of HSP70 and Glucocorticoid Receptor, suggesting beneficial effects of the supplied Bacillus mixture on fish welfare.