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1. Effects of shading, fertilization and snail grazing on the productivity of the water fern Azolla filiculoides for tropical freshwater aquaculture

Author:
Pouil, Simon; Samsudin, Reza; Slembrouck, Jacques; Sihabuddin, Ahmad; Sundari, Gusnia; Khazaidan, Khazaidan; Kristanto, Anang Hari; Pantjara, Brata; Caruso, Domenico
Source:
Aquatic botany 2020 v.160 pp. 103150
ISSN:
0304-3770
Subject:
fish feeds,   etc   ; Azolla filiculoides; Pomacea canaliculata; botany; ferns and fern allies; fertilizers; fish; freshwater aquaculture; grazing; macrophytes; polyethylene; ponds; protein content; shade; snails;     Show all 15 Subjects
Abstract:
... Water ferns (Azolla spp.) are among the main important floating macrophytes used for feeding farmed animals such as fish, because they have high growth potential and high protein content. Nevertheless, their use as feed requires sustainable mass production, which can be difficult to maintain in field conditions. We performed a first experiment to assess the effects of shading and fertilization lev ...
DOI:
10.1016/j.aquabot.2019.103150

2. Levels and human health risk assessments of heavy metals in fish tissue obtained from the agricultural heritage rice-fish-farming system in China

Author:
Wang, Jingxin; Shan, Qi; Liang, Ximei; Guan, Fangling; Zhang, Zhi; Huang, Haomin; Fang, Hansun
Source:
Journal of hazardous materials 2020 v.386 pp. 121627
ISSN:
0304-3894
Subject:
fish feeds,   etc   ; Ctenopharyngodon idella; Monte Carlo method; aquaculture systems; arsenic; benthic organisms; cadmium; carcinogenicity; chromium; fish; fish fillets; health effects assessments; heavy metals; human health; lead; mercury; pollution; rice-fish farming; risk; risk assessment; sediments; China;     Show all 22 Subjects
Abstract:
... China began to practice Rice-fish-farming system (RFFS) 1700 years ago. Nowadays, the widely spread of metals could be potential threats to the quality of RFFS fish. In this study, Pb, Cd, Hg, As and Cr as the top five most toxic heavy metals were determined in six species of RFFS fish meat obtained from 7 provinces in south China. The mean concentrations of metals in RFFS fish followed Pb (36.89  ...
DOI:
10.1016/j.jhazmat.2019.121627

3. Ultrasound assisted combined molecularly imprinted polymer for the selective micro-solid phase extraction and determination of aflatoxins in fish feed using liquid chromatography-tandem mass spectrometry

Author:
Jayasinghe, G.D. Thilini Madurangika; Domínguez-González, Raquel; Bermejo-Barrera, Pilar; Moreda-Piñeiro, Antonio
Source:
Journal of chromatography 2020 v.1609 pp. 460431
ISSN:
0021-9673
Subject:
fish feeds,   etc   ; acetonitrile; adsorbents; aflatoxin B1; aflatoxin B2; aflatoxin G1; aflatoxin G2; detection limit; formic acid; guidelines; high performance liquid chromatography; molecular imprinting; pH; particle size distribution; polymerization; polymers; potassium dihydrogen phosphate; solid phase extraction; solvents; sonication; standard deviation; tandem mass spectrometry; toluene; ultra-performance liquid chromatography; ultrasonic treatment; ultrasonics;     Show all 26 Subjects
Abstract:
... A combined procedure based on using ultrasounds for target isolation followed by porous membrane-protected micro solid phase extraction using a molecularly imprinted polymer as an adsorbent has been developed as a highly selective extraction and clean-up procedure for isolating aflatoxins B1, B2, G1, and G2 from fish feed before ultra-high-performance liquid chromatography tandem mass spectrometry ...
DOI:
10.1016/j.chroma.2019.460431

4. An experimental approach towards increasing mechanical durability of extruded fish feed in the drying process

Author:
Haubjerg, A. F.; Veje, C. T.
Source:
Drying technology 2019 v.37 no.11 pp. 1418-1426
ISSN:
1532-2300
Subject:
fish feeds,   etc   ; aquatic environment; biopolymers; drying; durability; financial economics; glass transition; organic matter; pelleted feeds; viscoelasticity;     Show all 10 Subjects
Abstract:
... Mechanical durability of extruded fish feed must be optimized to lower economic losses as well as emission of organic matter to aquatic environments. The glass transition hypothesis for viscoelastic biopolymers is demonstrated and confirmed experimentally to be valid for extruded fish feed pellets. It is proposed and demonstrated that it is important to avoid early glass transition onset, to optim ...
DOI:
10.1080/07373937.2018.1504061

5. Aquaculture feed technology adoption and smallholder household welfare in Ghana

Author:
Amankwah, Akuffo; Quagrainie, Kwamena K.
Source:
Journal of the World Aquaculture Society 2019 v.50 no.4 pp. 827-841
ISSN:
0893-8849
Subject:
fish feeds,   etc   ; credit; extension education; fish; fish culture; households; income; innovation adoption; models; poverty; prices; Ghana;     Show all 12 Subjects
Abstract:
... This study employs double‐hurdle model and propensity score‐matching techniques to examine the determinants and extent of adoption and the welfare impacts of improved fish feed technology in Ghana using cross‐sectional data of fish‐farming households. The study focuses on the Ashanti, Brong Ahafo, and western regions of Ghana. The results show that the quantity of improved feed used on‐farm is far ...
DOI:
10.1111/jwas.12544

6. Laboratory constraints on feeding behaviours in polymorphic bluegill sunfish (Lepomis macrochirus)

Author:
Moran, Clinton J.; Rzucidlo, Caroline L.; Ellerby, David J.; Gerry, Shannon P.
Source:
Freshwater biology 2019 v.64 no.5 pp. 926-932
ISSN:
0046-5070
Subject:
fish feeds,   etc   ; Artemia; Lepomis macrochirus; cameras; feeding behavior; fish; fish feeding; littoral zone;     Show all 8 Subjects
Abstract:
... Evaluating fish feeding behaviours is imperative to understanding prey resource use in the field. Previous work on fish feeding has taken place almost exclusively in a laboratory setting, which may impose artificial restrictions. Thus, we aimed to evaluate the constraints the captive setting places on fish feeding behaviours. We recorded polymorphic (littoral and pelagic) bluegill sunfish (Lepomis ...
DOI:
10.1111/fwb.13274

7. Intestinal microbiota of salmonids and its changes upon introduction of soy proteins to fish feed

Author:
Kononova, Svetlana V.; Zinchenko, Dmitry V.; Muranova, Tatyana A.; Belova, Nataliya A.; Miroshnikov, Anatoly I.
Source:
Aquaculture international 2019 v.27 no.2 pp. 475-496
ISSN:
0967-6120
Subject:
fish feeds,   etc   ; Salmonidae; aquaculture systems; fish; fishery resources; inflammation; intestinal microorganisms; intestines; rearing; soy protein;     Show all 10 Subjects
Abstract:
... World tendency in partial substitution of fishmeal-based diet in feeding fish reared in aquaculture systems for plant proteins is caused by exhaustion of fishery resources. The use of products of fat-free soy processing in feeds has provoked troubles in salmonid health, in particular the onset of inflammation in the intestine. Numerous investigations devoted to the analysis of reasons for such neg ...
DOI:
10.1007/s10499-019-00341-1

8. Forecasting monthly catfish (Ictalurus punctatus.) pond bank and feed prices

Author:
Hasan, Mohammad R.; Dey, Madan M.; Engle, Carole R.
Source:
Aquaculture economics & management 2019 v.23 no.1 pp. 86-110
ISSN:
1551-8663
Subject:
fish feeds,   etc   ; Ictalurus punctatus; catfish; corn; feed prices; fish culture; fish farms; managers; models; soybeans; uncertainty;     Show all 11 Subjects
Abstract:
... Volatility in catfish pond bank and feed prices lead to profit uncertainty in the catfish industry. Analysis of the factors that affect those prices and development of a forecasting model would provide guidance to catfish farm managers. Error-correction models (ECM) based on cointegrating relationships among variables were specified following development of a single-equation ARIMAX model. Factors ...
DOI:
10.1080/13657305.2018.1466376

9. A novel approach to determine optimal protein texturization conditions - A critical moisture level with increased effect of temperature on viscosity reduction in the rubbery state

Author:
Oterhals, Åge; Ahmad, Rafiq; Samuelsen, Tor Andreas
Source:
Journal of food engineering 2019 v.261 pp. 66-75
ISSN:
0260-8774
Subject:
fish feeds,   etc   ; equations; fish meal; ingredients; phase transition; soy protein concentrate; sunflower meal; temperature; texturization; viscosity; water content; wheat gluten;     Show all 12 Subjects
Abstract:
... The effect of moisture on reduction of the flow starting temperature (Tf; i.e. start of flow through a capillary die at constant pressure conditions) in major protein ingredients used in fish feed has been assessed using a Phase Transition Analyzer. All proteins showed an initial linear reduction in Tf followed by a sharp sigmoidal reduction at higher moisture content. A critical moisture level (M ...
DOI:
10.1016/j.jfoodeng.2019.05.022

10. Impact of fish protein concentrate on apparent viscosity and physical properties of soy protein concentrate subjected to thermomechanical treatment

Author:
Ahmad, Rafiq; Oterhals, Åge; Xue, Ying; Skodvin, Tore; Samuelsen, Tor Andreas
Source:
Journal of food engineering 2019 v.259 pp. 34-43
ISSN:
0260-8774
Subject:
fish feeds,   etc   ; cell walls; extrusion; fish protein concentrates; hardness; micro-computed tomography; microstructure; plasticizers; porosity; rheometers; soy protein concentrate; viscosity;     Show all 12 Subjects
Abstract:
... The aim of this research was to investigate the plasticizing and binding effect of fish protein concentrate (FPC) on soy protein concentrate (SPC) with the use of a capillary rheometer with pre-shearing capabilities. A 3-component mixture design was used to study the effect of the variables SPC, FPC and water. Mixture models with R2 in the range of 0.703–0.998 (P < 0.01) were established for appar ...
DOI:
10.1016/j.jfoodeng.2019.04.014

11. Cage aquaculture production in Zambia: Assessment of opportunities and challenges on Lake Kariba, Siavonga district

Author:
Hasimuna, Oliver J.; Maulu, Sahya; Monde, Concillia; Mweemba, Malawo
Source:
Egyptian Journal of Aquatic Research (Online) 2019 v.45 no.3 pp. 281-285
ISSN:
1687-4285
Subject:
fish feeds,   etc   ; Oreochromis niloticus; business enterprises; cage culture; fish; fish cages; fish production; lakes; manufacturing; raw materials; Zambia;     Show all 11 Subjects
Abstract:
... Cage aquaculture is among the recent innovations that have attracted great attention in fish production in most African countries. In Zambia, cage aquaculture has recorded significant growth to even emerge as the largest contributor to the total national aquaculture production annually. Our study was aimed at assessing cage aquaculture production in Siavonga district of Zambia. We targeted the aqu ...
DOI:
10.1016/j.ejar.2019.06.007

12. Identification of ethoxyquin and its transformation products in salmon after controlled dietary exposure via fish feed

Author:
Merel, Sylvain; Regueiro, Jorge; Berntssen, Marc H.G.; Hannisdal, Rita; Ørnsrud, Robin; Negreira, Noelia
Source:
Food chemistry 2019 v.289 pp. 259-268
ISSN:
0308-8146
Subject:
fish feeds,   etc   ; Salmo salar; acetonitrile; dietary exposure; dimerization; ethoxyquin; fish fillets; food safety; liquid chromatography; mass spectrometry; salmon; tanks;     Show all 12 Subjects
Abstract:
... Ethoxyquin (EQ) is an additive present in fish feed and its fate in fish should be carefully characterized due to food safety concerns regarding this compound. Therefore, the objective of this work was to identify the transformation products (TPs) of EQ in Atlantic salmon. Salmon in independent tanks were given feed containing ethoxyquin concentrations of 0.5 mg/kg, 119 mg/kg or 1173 mg/kg for 90  ...
DOI:
10.1016/j.foodchem.2019.03.054

13. Optimization of sample preparation procedures for evaluation of the mineral composition of fish feeds using ICP-based methods

Author:
Souza, Sidnei O.; Pereira, Talita Reis S.; Ávila, Dayara Virgínia L.; Paixão, Luciane B.; Soares, Sarah Adriana R.; Queiroz, Antônio Fernando S.; Pessoa, Amália Geíza G.; Korn, Maria das Graças A.; Maranhão, Tatiane A.; Araujo, Rennan Geovanny O.
Source:
Food chemistry 2019 v.273 pp. 106-114
ISSN:
0308-8146
Subject:
fish feeds,   etc   ; breeding; cadmium; experimental design; humans; laws and regulations; mineral content; ornamental fish; spectrometers; tea; trace elements;     Show all 11 Subjects
Abstract:
... This work describes the application of an experimental design in optimizing the decomposition and spectrometer operational conditions for analysis of fish feeds. The content of 22 elements (six macroelements, four microelements and eleven trace elements) in feeds for fishes (ornamental and for human consumption) was determined by inductively coupled plasma (ICP)-based methods. Limits of quantifica ...
DOI:
10.1016/j.foodchem.2018.01.178

14. Using genetic methods for analysis of fish meals and feeds employed in Greek mariculture

Author:
Vlachavas, Antonis; Karaiskou, Nikoleta; Kokokiris, Lambros; Zampeta, Foteini‐Izampela; Drosopoulou, Elena; Triantafyllidis, Alexander
Source:
Aquaculture research 2019 v.50 no.1 pp. 312-322
ISSN:
1355-557X
Subject:
fish feeds,   etc   ; Engraulis; farmed animal species; fish meal; mariculture; marine ecosystems; pelagic fish; protein sources; risk; trophic levels; Greece;     Show all 11 Subjects
Abstract:
... Large quantities of high protein fish meals are needed to sustain cultured species and thus the impact to marine ecosystem has been highly discussed. The aim of this study was to apply a PCR‐cloning methodology for a robust insight into the composition of commercial fish meals and feeds for farmed species of the Greek mariculture, assessing the risk posed by aquaculture to marine ecosystems but al ...
DOI:
10.1111/are.13900

15. Effect of rapeseed press cake and peel on the extruder response and physical pellet quality in extruded fish feed

Author:
Martin, Anna; Osen, Raffael; Greiling, Alexander; Karbstein, Heike Petra; Emin, Azad
Source:
Aquaculture 2019 v.512 pp. 734316
ISSN:
0044-8486
Subject:
fish feeds,   etc   ; Oncorhynchus mykiss; aquaculture industry; bulk density; durability; extrusion; feed formulation; fish meal; hardness; pelleted feeds; pellets; protein sources; rapeseed; rapeseed cake; temperature; torque;     Show all 16 Subjects
Abstract:
... Alternative protein sources are required to meet the demand for fishmeal-free feed in the aquaculture industry. We assessed rapeseed press cake (RPC) as fishmeal replacement, including the effect of rapeseed peel (RP), by testing its effect on extruder response and the physical quality of feed pellets. Eight rainbow trout (Oncorhynchus mykiss W.) feed formulations were extruded containing 0, 8, 16 ...
DOI:
10.1016/j.aquaculture.2019.734316

16. Natural and anthropogenic radionuclides in Norwegian farmed Atlantic salmon (Salmo salar)

Author:
Heldal, Hilde Elise; Volynkin, Andrey; Komperød, Mari; Hannisdal, Rita; Skjerdal, Hilde; Rudjord, Anne Liv
Source:
Journal of environmental radioactivity 2019 v.205-206 pp. 42-47
ISSN:
0265-931X
Subject:
fish feeds,   etc   ; Salmo salar; adults; arithmetics; cesium; farmed fish; lead; plutonium; polonium; radioactivity; radionuclides; radium; risk; salmon; seafoods; strontium; surveys; toddlers; Atlantic Ocean; Norway;     Show all 20 Subjects
Abstract:
... Norway is one of the main producers of farmed fish and the world's second-largest exporter of seafood. Farmed Atlantic salmon (Salmo salar) represents the most exported species. This is the first comprehensive survey of anthropogenic (137Cs, 90Sr, 238Pu, 239,240Pu and 241Am) and natural (40K, 226Ra, 228Ra, 210Pb, 210Po) radionuclides in farmed salmon and manufactured fish feed from Norway. The onl ...
DOI:
10.1016/j.jenvrad.2019.05.002

17. Utilization of the earthworm, Eisenia fetida (Savigny, 1826) as an alternative protein source in fish feeds processing: A review

Author:
Musyoka, Sonnia Nzilani; Liti, David Mbeva; Ogello, Erick; Waidbacher, Herwig
Source:
Aquaculture research 2019 v.50 no.9 pp. 2301-2315
ISSN:
1355-557X
Subject:
fish feeds,   etc   ; Eisenia fetida; amino acid composition; aquaculture; earthworms; economic sustainability; fish meal; mortality; processing technology; production technology; protein content; protein sources; reproduction;     Show all 13 Subjects
Abstract:
... Use of fish meal in aquaculture is gradually becoming unsustainable due to competition, cost and ecological challenges hence the need to expand the alternative protein sources. The earthworm, Eisenia fetida is among the non‐conventional protein sources, which have been tested with relatively promising results, thanks to its high protein levels, proper amino acid profile, high reproduction rate, lo ...
DOI:
10.1111/are.14091

18. Aquaculture perceptions in the Barcelona metropolitan area from fish and seafood wholesalers, fishmongers, and consumers

Author:
Reig, L.; Escobar, C.; Carrassón, M.; Constenla, M.; Gil, J.M.; Padrós, F.; Piferrer, F.; Flos, R.
Source:
Aquaculture 2019 v.510 pp. 256-266
ISSN:
0044-8486
Subject:
fish feeds,   etc   ; animal welfare; aquaculture; environmental impact; experts; fish; markets; metropolitan areas; optimal nutrition; prices; public opinion; qualitative analysis; questionnaires; seafoods; sensory properties; stakeholders; supply chain; surveys;     Show all 18 Subjects
Abstract:
... Aquaculture provides more than half of the global seafood production and offers a wide diversity of high-quality products. However, its social acceptability is still not well established. The goal of this study was to determine the perceptions of aquaculture by different stakeholders along the seafood value chain in the Barcelona metropolitan area. The methodology used was based on a two-phase qua ...
DOI:
10.1016/j.aquaculture.2019.05.066

19. Evaluation of post-consumer food waste as partial replacement of commercial feed in marbled rabbitfish, Siganus rivulatus aquaculture

Author:
Nasser, N.; Babikian, J.; Hatem, M. G.; Saoud, I. P.; Abiad, M. G.
Source:
International journal of environmental science and technology 2019 v.16 no.8 pp. 4059-4068
ISSN:
1735-1472
Subject:
fish feeds,   etc   ; Siganus rivulatus; aquaculture; developing countries; feed conversion; feed supplements; fish; food waste; hematologic tests; landfills; lipid content; mortality; pellets; restaurants; rural areas;     Show all 15 Subjects
Abstract:
... Food waste remains as one of the most serious environmental challenges facing the world today, with sizable quantities generated and disposed of in landfills. Accordingly, exploring solutions to mitigate the detrimental impacts of such waste becomes vital. Aquaculture, a rapidly growing industry in rural areas of developing nations, offers the potential of using this waste productively to partiall ...
DOI:
10.1007/s13762-018-2051-x

20. Gene expression, enzyme activity and performance of Nile tilapia larvae fed with diets of different CP levels

Author:
Silva, W. S.; Costa, L. S.; López-Olmeda, J. F.; Costa, N. C. S.; Santos, W. M.; Ribeiro, P. A. P.; Luz, R. K.
Source:
Animal 2019 v.13 no.7 pp. 1376-1384
ISSN:
1751-732X
Subject:
fish feeds,   etc   ; Oreochromis niloticus; air; enzyme activity; experimental diets; fish culture; fish larvae; gene expression; pepsin; pepsinogen; protein requirement; stress response; stress tolerance;     Show all 13 Subjects
Abstract:
... Protein is the most costly nutrient in fish feed, and while diets offered in the early stages of development typically have high levels of CP, they do not always correspond to the real requirements of the animals. Thus, research that seeks to learn the true nutritional requirements of fish is fundamental to improving commercial fish culture. The present study evaluated the protein requirements of ...
DOI:
10.1017/S175173111800318X