Showing papers in "Aquaculture in 2007"

TL;DR: The periphyton treatment technique is applicable to extensive systems, and the proteinaceous bio-flocs technology can be used in extensive as well as in intensive systems, which provide an inexpensive feed source and a higher efficiency of nutrient conversion of feed.

TL;DR: This review is an attempt to integrate the available scientific information related to zebrafish biology and culture into an overview of the field that can be used to improve the efficiency with which this important model animal is used in research.

TL;DR: This preliminary evaluation was based on the assumption that fish harvesting is the only mechanism affecting bio-flocs mass, neglecting biodegradation and production of flocs, and constituted almost 50% of conventional feed in the specific case studied.

TL;DR: Bone deformities associated with nutrient deficiencies and toxicities in various fish can provide an excellent model to study gene action, cell differentiation, morphogenesis, species differences in phenotypic expression of genetic abnormalities, deposition of calcium, phosphorus and other trace elements in cartilage and skeletal tissues in response to vitamins and hormones and nutrient interactions.

TL;DR: Shrimp receiving the diets supplemented with probiotics showed significantly better growth performance than those fed the basal diet (Control) and the mean digestive enzyme activity of each treatment groups was significantly different.

TL;DR: Differences in muscle structure and trace mineral contents have been observed for both species and the possibility of quality manipulation of the two studied species through dietary (fat level, feeding ratio, fasting, type of feed etc.) and other quality affecting factors is discussed based on literature data.

TL;DR: This review will focus on the most relevant processes during this short period of early life history of marine fish: gut anatomy, digestive capacities, feeding behaviour and metabolism.

TL;DR: Results from this study demonstrate that fish meal can be completely replaced using alternative vegetable protein sources in practical shrimp feeds without compromising production and economic performance of L. vannamei reared in ponds.

TL;DR: The latest insights into the mechanisms underlying the process of making meiotic diploids and DH individuals are discussed, and the use of doubled haploids and clones in quantitative trait locus mapping and selective breeding is explored.

TL;DR: FARM provides a valuation methodology useful for integrated nutrient management in coastal regions and provides a tool for screening various water quality impacts, and examines the mass balance of nutrients within a 6000 m 2 oyster farm.

TL;DR: The present state of knowledge concerning the importance of yeasts in fish gut is summarized, while trying to elucidate the mode of action, and determine whether cellular viability is a prerequisite for efficacy.

TL;DR: Seasonal variations in biochemical composition of the bivalve Crassostrea gigas were studied from February 2002 until January 2003 in the Bizert lagoon in relation to environmental conditions and reproductive events to show a clear cycle of energy storage and utilization.

TL;DR: The results show that the replacement of fish oil with soybean or linseed oil in sharpsnout seabream diets does not affect growth or feed utilization after three months of feeding, and the SO diet was the least expensive diet, and had the best economic conversion ratio.

TL;DR: Biomass production was stimulated by molasses, suggesting that this industrial by-product could be used as a low-cost supplement for the growth of Spirulina platensis.

TL;DR: There is a great potential for using quite high inclusions of plant proteins in cod diets, provided that the plant ingredients are of high quality.

TL;DR: An overview of the gastrointestinal tract of larvae and fry from an electron microscopical perspective focussing on factors affecting translocation of bacteria (transcellular and paracellular), cellular damage and pathogenesis is provided.

TL;DR: It is obvious from the results from both of the present studies that taurine supplementation does have a significant impact on growth and feed efficiency of juvenile cobia when they are fed diets containing high levels of plant-based proteins as well as other biological indices.

TL;DR: Rearing techniques for the O. vulgaris paralarvae used by the different research participant teams are described, with regard to tank systems, feeding environment, and diets (Artemia, crustacean zoeae, sandeel flakes, copepods, etc.).

TL;DR: The elevation of whole-body cortisol in zebrafish suggested that the visual contact of the predator may elicit a stress response in prey fish, which has a strong practical application concerning the species distribution in ornamental fish markets in which prey species should not be allowed to see predator species.

TL;DR: Current standards for organic salmon aquaculture, which stipulate the use of organic crop ingredients and fisheries by-product meals and oils, fail to reduce the environmental impacts of feed production for the suite of impact categories considered in this study.

TL;DR: The data provided demonstrate the use of PCR–DGGE as an alternative method for studying the intestinal microbiota of fish and compare the results obtained by the cultivation-based and molecular-based techniques.

TL;DR: Dietary taurine inclusion does appear beneficial for trout fed all-plant protein diets, and supplementation of methionine above the requirement does not appear to spare taurin.

TL;DR: The economic analysis indicates that inclusion of soybean meal in the diet reduces feeding costs and flesh quality was very little affected, albeit fish feeding on diets with partial replacement of fish meal tended to be somewhat softer.

TL;DR: It is suggested that L .

TL;DR: These studies revealed cross-talks between some metabolic processes, particularly those concerning vitamin A and polyunsaturated fatty acids, during fish larvae development and unveil the necessity to design a global approach for determining the requirements of some nutrients.

TL;DR: Lean growth rather than body weight gain should be the response parameter to determine Lys requirement in salmon.

TL;DR: A synthesis on physiological characteristics of two selected groups, from families selected for resistance and susceptibility to summer mortality respectively, of the second and third generations of Pacific oysters showed improvement or reduction of survival compared with the control in both field and laboratory trials confirming the high heritability of survival of juveniles b1 year old.

TL;DR: There were significant differences in total serum protein, glucose and triacyglycerol concentrations in fish fed diets with different dietary lysine levels, but hemoglobin and red blood cell count were not significantly affected.

TL;DR: It is demonstrated that vitamin E might have a potentially useful role as an effective antioxidant by regulating osmotic balance and resistance to salinity changes in shrimp.

TL;DR: In an effort to stimulate increased researcher focus into the identification of fish growth genes, the terrestrial livestock and finfish literature is reviewed, and based on positive associations between genes and growth, those genes that should be further targeted as candidate growth genes in aquaculture species are identified.