Showing papers in "Aquaculture in 2000"

TL;DR: Crustacean haemocytes play important roles in the host immune response including recognition, phagocytosis, melanization, cytotoxicity and cell-cell communication.

TL;DR: This paper attempts to review and evaluate existing information about the effects of environmental changes on the immune response in Crustacea, and focuses on natural environment variations, chemical contaminants and physico-chemical changes, especially with regard to reared shrimp.

TL;DR: Bacillus S11 provided disease protection by activating both cellular and humoral immune defenses, as well as presumably providing competitive exclusion in the shrimp's gut.

TL;DR: Most of the work reviewed in this article describes commercial hatchery experiments rather than rigorous laboratory investigations and the focus is principally shrimp larviculture.

TL;DR: This paper reviews what is known so far about crustacean defence mechanisms, particularly of penaeid shrimp, with special emphasis on the proPO and the clotting system.

TL;DR: Feeding salmonids with diets containing the probiotic revealed that the isolate remained viable in the gastrointestinal tract, and challenge by cohabitation indicated effectiveness at reducing disease caused by A. salmonicida, V. ordalii and Y. ruckeri but not V. anguillarum.

TL;DR: Both species developed enteritis in the distal intestine when fed the soybean meal diet, and within each species, the digestibility of nitrogen was similar for both diets.

TL;DR: A spectrophotometric nitroblue tetrazolium NBT reduction assay was used to demonstrate the production of superoxide anions O by haemocytes of the white shrimp Penaeus Oannamei, and it was shown that it is indeed theProduction of O y that was measured.

TL;DR: The weight gain and feed efficiency ratio data showed that soybean meal and pea protein concentrate had the best potential for replacing at least 33% of the fish meal protein in extruded salmon feeds and that lupin protein concentrate was less well utilised at the higher inclusion level.

TL;DR: This paper reviews and discusses, from an ecological perspective, the causes behind the development and spreading of pathogens in shrimp aquaculture.

TL;DR: The composition of the intestinal microflora showed high variation among three investigated fish farms and also at different time points within one fish farm.

TL;DR: The development of strategies for prophylaxis and control of shrimp diseases could be aided by the establishment of a collaborative network to contribute to progress in basic knowledge of penaeid immunity and to improve efficiency, it appears essential to open this network to complementary research areas related to shrimp pathology, physiology, genetics and environment.

TL;DR: Silver perch were capable of digesting protein very effectively in almost all ingredients tested, and provided a useful starting point for least-cost formulation of diets for silver perch.

TL;DR: Extruded lupin was found to be a promising substitute for fish meal in the diets of trout and turbot, with an acceptable digestibility of its dry matter and its protein and its energy.

TL;DR: A multivariate regression model was fitted to the data to describe the combined effects of temperature and DO on FI and will assist in optimization of feeding practices in channel catfish aquaculture.

TL;DR: An integrated system for the intensive land-based culture of abalone, seaweed and fish was established using an integrated design to achieve nutrient recycling, reduced water use, reduced nutrient discharge and high yields.

TL;DR: The results indicate that muscle fibre cellularity is an important factor in several key flesh quality traits and the potential for manipulating muscle cellularity to produce desirable flesh quality characteristics is briefly discussed.

TL;DR: Studies into the value of cellular and humoral parameters as indicators of shrimp condition are being carried out, with the intention of developing criteria for sanitary surveys, immunomodulation studies and selection programs for shrimp with high resis- tance to pathogens.

TL;DR: These products can be used to reduce the fish-meal content of practical diets from 30 to 6 g/100 g dry wt.

TL;DR: An overview of the history of Artemia cyst provision worldwide since the 1950s allows a better assessment of the current situation, characterized by poor yields from the main harvest site, the Great Salt Lake in Utah, USA, and to make prognoses about future supplies and demands.

TL;DR: The results suggest that the first four regions of the intestinal tract play the most important role in both digestion and absorption of nutrients in Nile tilapia.

TL;DR: It can be deduced that cephalopod paralarvae and juveniles must require a food rich in polyunsaturated fatty acids (PUFA), phospholipids and cholesterol and with a moderate content in neutral lipids.

TL;DR: The hypothesis that the highest digestive enzyme activities in yolk-sac larvae are reached by 230–276 dd, i.e., near the end of the age interval recommended for first feeding, is supported.

TL;DR: Beta glucan binding protein stimulates cellular function only after its reaction with LPS or β-glucans, resembling the secondary activities of vertebrate antibodies.

TL;DR: It is concluded that the use of a number of microsatellite markers represents a realistic and cost-effective alternative to physical tagging in a family selection program.

TL;DR: The results from this study show that feather meal and meat and bone meal have good potential for use in rainbow trout diets.

TL;DR: Measurement of OC variations is proposed as a convenient and reliable way to monitor the physiological condition and the effect of stressors in crustaceans.

TL;DR: The transgenic experimental subjects used throughout the present study possessed the physio- logical plasticity necessary to accommodate an acceleration in growth well beyond the normal, and transgenic salmon relative to control fish exhibited a 10% improvement in gross feed conversion efficiency.

TL;DR: Results from this study show that a significant part of FM can be replaced by soy proteins for low-pollution diets, without compromising weight gain or feed efficiency in large rainbow trout fed practical diets.

TL;DR: No significant differences were found in digestibility, feed efficiency or protein and energy retention efficiency between the deprived and control fish during refeeding, suggesting that hyperphagia was the mechanism responsible for increased growth rates during compensatory growth.