A5074537653- Aquaculture Nutrition and Growth
- Aquaculture disease management and microbiota
- Reproductive biology and impacts on aquatic species
- Marine Bivalve and Aquaculture Studies
- Fish Biology and Ecology Studies
- Marine and fisheries research
- Animal Nutrition and Physiology
- Aquatic Invertebrate Ecology and Behavior
- Aquatic life and conservation
- Fish Ecology and Management Studies
- Physiological and biochemical adaptations
- Marine and coastal plant biology
- Algal biology and biofuel production
- Echinoderm biology and ecology
- Food Industry and Aquatic Biology
- Water Quality Monitoring Technologies
- Calcium Carbonate Crystallization and Inhibition
- Subterranean biodiversity and taxonomy
- Proteins in Food Systems
- Agricultural Systems and Practices
- Parasite Biology and Host Interactions
- Protein Hydrolysis and Bioactive Peptides
- Ocean Acidification Effects and Responses
- Crustacean biology and ecology
- Fish biology, ecology, and behavior
AB Agri
2018-2022
Swansea University
2008-2015
Wageningen University & Research
2009
Israel Oceanographic and Limnological Research
1996-2005
Hebrew University of Jerusalem
2003
Kibbutzim College of Education, Technology and the Arts
2003
Soy and rapeseed protein concentrates (SPC RPC) were evaluated as fish meal substitutes in gilthead seabream Sparus aurata L. diets. The used to replace 30%, 60% 100% meal, effects on feed intake, weight gain ratio determined a 56-day growth trial. Some groups then grown beyond 56 days, until all reached an average of 50 g. A comparison body composition at g showed no significant differences ash content among fish, while lipid energy contents different. RPC SPC replacement diets had lower...
ABSTRACT Marine aquaculture relies on coastal habitats that will be affected by climate change. This review assesses current knowledge of the threats and opportunities change for in UK Ireland, focusing most commonly farmed species, blue mussels ( Mytilus edulis ) Atlantic salmon Salmo salar ). There is sparse evidence to indicate affecting Ireland. Impacts date have been difficult discern from natural environmental variability, pace technological development overshadows effects climatic...
A model to estimate the waste production from sea cage culture was established. Using known feed inputs of nitrogen, phosphorus and organic matter, quantifies discharge seabream culture. Daily intake growth in Sparus aurata fed a commercial diet with composition were measured found be dependent on fish weight water temperature. Digestibility using chromic oxide as marker collection feces by stripping. The proximate at different sizes determined nitrogen content average 28.5 7.2 g·kg −1 body...
Apparent digestibility of crude protein, amino acids, lipid, carbohydrate and energy was measured for a range feed ingredients fed to gilthead seabream, Sparus aurata L. — fish meal, poultry meat blood squid extracted soyabean wheat flour. Chromic oxide used as non-absorbed reference substance faeces were collected by stripping. Diets compounded from mixtures these then examine the possibility predicting formulated diets. protein ranged 79% 90%, lipids 83% 95% 72% 88% in different...
Diets formulated with increasing digestible energy (10–22 DE MJ kg−1) contents and decreasing crude protein (DCP)/DE ratios (34–15 g MJ−1) were fed to triplicate groups of Sparus aurata in three consecutive trials. Fish hand-fed apparent satiation voluntary feed intake was found be dependent upon dietary content. Daily growth regulated both by reached its maximum at high levels. Growth composition showed narrow limits regarding gain (157–190 g kg−1) a wider range lipid (55–210 g kg−1)...
Factorial determinations of energy and protein requirements in growing Sparus aurata were carried out at 23–24°C. The content the whole fish was dependent on weight ranged from 5 to 11 MJ kg−1 body mass for 1–250 g fish, whereas remained constant 179 kg−1. During starvation lost 42.5 kJ (BW) (kg)−0.83 day−1 0.42 BW (kg)−0.70 day−1. maintenance requirement calculated be 55.8 0.86 Utilization digestible crude below determined as 0.72 0.51, respectively. growth above 0.46 0.28, These values...
Apparent digestibility of crude protein (CP), lipid, carbohydrate, energy and fatty acids was measured in various feed ingredients fed to hybrid tilapia (Oreochromis niloticus×Oreochromis aureus) including fish poultry meals, corn gluten, soybean meal, rapeseed sunflower seed wheat, corn, sorghum, barley wheat bran. Chromic oxide used as a non-absorbed marker. A diet compounded from mixture these then examine the possibility predicting formulated diets. In addition, effect pelleting or...
Probiotic use in aquaculture settings can be an approach for disease control and dietary supplementation. We assessed the antagonistic effect of culture supernatants lactic acid bacteria on growth known shrimp pathogens, Vibrio ( Listonella ) anguillarum , alginolyticus V. harveyi using a quantitative microplate bioassay. Supernatants from Lactobacillus curvatus subsp. curvatus, L. plantarum Pediococcus acidolactici significantly inhibited these vibrios. The active component(s) were heat...
Protein and energy are two of the main limiting factors for sea urchin growth. However, requirement daily protein to maximize gonadal production is still unknown. Paracentrotus lividus were fed three experimental diets: Ulva lactuca, Gracilaria conferta a prepared diet 2 months in fall 1999 spring 2000. Sea urchins from laboratory-cultured population equal age, weight test diameter used. Apparent digestibility coefficients (ADC%) energy, using acid-insoluble ash as marker, measured all...
Energy and protein requirements of growing fish can be quantified as the sum amounts energy retained growth plus simultaneously lost from body. The requirement for dietary gross calculated using respective effi- ciencies utilization. Growth gilthead seabream a function body weight tempera- ture was predicted by equation: y = 0.024 x BW0.514 exp0.060T (where daily gain in g/fish, BW g T temperature °C). determined ranging 1-470 g. content depended on rose 4.7 to 11.0 kJ/g mass grew whereas...
Soy protein concentrate, wheat gluten, and corn gluten meal were evaluated in combination as sole dietary sources diets for gilthead seabream. A growth trial digestibility determinations demonstrated the effectiveness of these plant proteins alternatives to fish- meal. Digestibility trials indicated superior soy (92%), (96%), (90%) comparison with fishmeal (86%), while energy was higher than (84%) only (91%; it 75% 72% gluten). For trial, eight isonitrogenous isoenergetic (as-fed basis)...
This study examined the microscopic structure of small intestine and digestion absorption in hybrid tilapia, Oreochromis niloticus×Oreochromis aureus. The was lined on luminal face with villi, which were narrower more dense proximal became wider sparser distally. columnar epithelial cells lining villi predominantly enterocytes containing a brush border, interspersed mucus goblet approximately every 4–6 cells. These mucus-secreting contained both acid basic mucins increased density distal...
A field study was carried out to assess the use of bottom-feeding grey mullet (Mugil cephalus) within benthic enclosures as a means reduce impacts net cage fish farm in Gulf Aqaba, Red Sea. Five experimental 1-m3 net-cage were stocked with 12 mullets each (fish weights 50, 70 or 144 g). The had no bottom and access enclosed organically enriched sediments particulate matter (PM) falling from overlying cages. Sediment traps used quantify qualify PM sea floor. Simultaneously, feeding trial...