Oil-adjuvanted furunculosis vaccines in commercial fish farms: a preliminary epizootiological investigation

Aquaculture ◽  
2000 ◽  
Vol 190 (1-2) ◽  
pp. 1-9 ◽  
Author(s):  
Pete Smith ◽  
Maura Hiney
Keyword(s):  
Fish Farms ◽  
Commercial Fish

PREVENTIVE MEASURES IN BREEDING FISHING FARMS: ECOLOGICAL AND VETERINARY ADDITIONS

2018 ◽  
Vol 1 (1) ◽  
pp. 84-89
Author(s):  
A. M. Naumova ◽  
◽  
L. A. Rozumnaya ◽  
A. Yu. Naumova ◽  
L. S. Loginov ◽  
...  
Keyword(s):  
Preventive Measures ◽  
Fish Farming ◽  
Fish Health ◽  
Fish Farms ◽  
Scientific Publications ◽  
Commercial Fish ◽  
Fish Products ◽  
Contagious Diseases ◽  
Veterinary Research ◽  
Significant Damage

The influence of ecological, epizootological and technological factors on fish health was studied. It is shown that disregard of environmental, technological and veterinary-sanitary requirements in the reproduction and cultivation of fish leads to the emergence of contagious and non-contagious diseases and causes significant damage to fish farming. The analysis of previously approved veterinary and sanitary rules, instructions, recommendations for breeding and commercial fish farms, as well as patent documentation and scientific publications in the field of ecological and veterinary research in fish farming is carried out. The possibility of using modern ecological and veterinary-sanitary achievements for the protection of fish health is shown. The complex system of preventive measures (organizational, environmental-technological and veterinary-sanitary), supplemented by modern ecological and veterinary achievements, in its implementation will allow to reduce losses of fish products and increase efficiency of production.

scholarly journals Innovative Biotechnology of Artificial Reproduction of Fish Populations

2020 ◽  
Author(s):  
П.Е. Гарлов
Keyword(s):  
Pituitary Gland ◽  
Sea Water ◽  
Natural Populations ◽  
Ecological Factors ◽  
Water Supply Systems ◽  
Artificial Reproduction ◽  
Fish Farms ◽  
Commercial Fish ◽  
Fish Breeding ◽  
Critical Salinity

С целью повышения эффективности искусственного воспроизводства популяций ценных видов рыб разработаны новые методы управления их размножением, выживаемостью и ростом, которые представлены в виде изобретений. Для управления размножением производителей разработаны методы стимуляции и задержки полового созревания производителей осетровых и костистых рыб. Для стимуляции полового созревания были разработаны препараты изолированной передней и изолированной задней долей гипофиза. Их внедрение в осетроводстве позволило повысить степень их рыбоводного использования в среднем на 15% и достичь экономии гипофиза до 40%. Для задержки полового созревания производителей разработан метод их промышленного резервирования в среде критической солёности 4–8‰, причём как в морской воде, так и в растворах поваренной соли. Производственными испытаниями доказана возможность сохранения рыбоводного качества производителей и получения доброкачественного потомства в этой среде при верхних нерестовых температурах в течение производственно необходимых сроков. С целью заводского воспроизводства природных популяций промысловых рыб разработан метод управления их размножением триадой адекватных экологических факторов ‒ «критической» солёностью, температурой и освещённостью при видоспецифических пороговых воздействиях. На этой основе разработан полносистемный метод воспроизводства популяций ценных видов промысловых рыб (севрюги и Балтийского лосося), охватывающий все этапы заводской биотехники. Новый метод осуществляется путём массовой морской заготовки производителей, получения потомства в морских садках и, после заводского речного выращивания молоди до готовности к миграции, конечного доращивания в морских садках крупной жизнестойкой молоди. Для промышленного внедрения всей предложенной биотехники и круглогодичной аквакультуры разработаны системы водоснабжения рыбоводных заводов и рыбоводных хозяйств на основе внесезонного подземного гидрокондиционирования среды выращивания и на природно-промышленных принципах инженерной экологии. In order to increase the efficiency of artificial reproduction of populations of valuable fish species new methods for managing their reproduction, survival and growth have been developed, which are presented in the form of inventions. To control the reproduction of producers methods have been developed to stimulate and delay puberty of sturgeon and bony fish producers. To stimulate puberty preparations for the isolated anterior and isolated posterior lobes of the pituitary gland have been developed. Their introduction in sturgeon breeding made it possible to increase the degree of their fish farming use by an average of 15% and to achieve a pituitary gland economy of up to 40%. To delay the puberty of producers, a method for their industrial reservation in an environment of critical salinity of 4–8‰ has been developed both in sea water and in solutions of sodium chloride. Production tests have proven the possibility of preserving the fish-breeding quality of producers and obtaining benign offspring in this environment at the upper spawning temperatures during the production required periods of time. With the aim of factory reproduction of natural populations of commercial fish a method has been developed to control their reproduction by a triad of adequate ecological factors – “critical” salinity, temperature and illumination under species-specific threshold effects. On this basis a full-system method of reproducing populations of valuable species of commercial fish (stellate sturgeon and Baltic salmon) has been developed covering all stages of factory biotechnology. The new method is carried out by mass marine harvesting of producers obtaining offspring in sea pens and after the factory river rearing of hatchling until ready for migration the final rearing of large viable juveniles in sea pens. For the industrial introduction of all the proposed biotechnics and year-round aquaculture, water supply systems for fish breeding plants and fish farms were developed on the basis of off-season underground hydroconditioning of the growing environment and on the natural and industrial principles of engineering ecology.

scholarly journals Jelly surge in the Mediterranean Sea: threat or opportunity?

2020 ◽  
Vol 21 (1) ◽  
pp. 11 ◽  
Author(s):  
CINZIA GRAVILI
Keyword(s):  
Mediterranean Sea ◽  
Power Plants ◽  
Nutrient Loading ◽  
Coastal Development ◽  
Dark Side ◽  
Mediterranean Ecosystem ◽  
Marine Biota ◽  
Fish Farms ◽  
Commercial Fish ◽  
The Mediterranean

  The rise in water temperature in the Mediterranean Sea, and associated migrations of temperate marine biota, are occurring in the context of a global warming causing an expansion of the tropical jellyfish range, exacerbating jellyfish outbreaks linked to coastal development, nutrient loading, and overfishing. The gelatinous component of plankton is considered as ‘the dark side of ecology’ capable of appearing and disappearing at unpredictable times. In the last decade an increasingly high number of gelatinous plankton blooms are occurring and this makes us wonder if ‘a Mediterranean Sea full of jellyfish is a probable future’. The reasons for rising jellyfish blooms are, probably, manifold. Current studies are aimed to highlight how climatic change is interacting with the Mediterranean ecosystem favouring entrance, abundances and success of alien species and triggering ‘regime shifts’ such as from fish to jellyfish. Jellyfish damage the economic success of power plants, fish farms, tourism, and affect fisheries consuming larvae of commercial fish species. On the other hand, several studies were also taken into account on uses for jellyfish as biofuels and foods but more experimentation is needed to improve the first encouraging results.

Sanitation of fish farms and prevention of fish diseases by pond drying with the use of fish and grass rotation

2016 ◽  
Vol 3 (3) ◽  
pp. 380-384
Author(s):  
Наумова ◽  
A. Naumova ◽  
Наумова ◽  
A. Naumova
Keyword(s):  
Comparative Research ◽  
Silver Carp ◽  
Fish Farm ◽  
Fish Production ◽  
Fish Ponds ◽  
Fish Farms ◽  
Commercial Fish ◽  
Causative Agents ◽  
Annual Frequency ◽  
One Year

Objective of research: to present the actuality and novelty of application of fish and grass “rotation” because this allows to reveal new data on pond drainage planning which is the most effective in sanitation of the fish farm. Materials and methods: to determine the most effective cycle for the summer drying of ponds, we studied ecological and epizootological features of fishing ponds, which had been used after drying within 1 and 5 years. As research object served 8 fish ponds: 4 drained ponds under crop (40 ha), 4 — overflowed (40 ha) and filled with one-year carps (2,5-З thousand ind./ha) and silver carps (1,2-1,4 thousand ind./ha). Results and discussion: The results of comparative research on anti-epizootic efficacy of pond drying at different periodicity of 1 and 5 years with the use of fish and grass “rotation” are provided. Data on decreased invasion of fishes (carp, silver carp) by parasites, absence of causative agents of infection, improved blood indicators, increased fish production at annual pond drying (with the use of fish and grass “rotation”) compared with the pond drying of 5 year periodicity are presented. Advantages of economic efficacy of the annual frequency of pond drying are confirmed: twice increased commercial fish production; reduced expenses for purchase of food (own barley and wheat production), drugs, disinfectants, fertilizers that allow increasing economic revenue and making profit.

scholarly journals Genetic analysis of Atlantic salmon captured in a netting station reveals multiple escapement events from commercial fish farms

2012 ◽  
Vol 20 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Z. Zhang ◽  
K. A. Glover ◽  
V. Wennevik ◽  
T. Svåsand ◽  
A. G. E. Sørvik ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Atlantic Salmon ◽  
Fish Farms ◽  
Commercial Fish

scholarly journals Diversity and characterization of lactic acid bacteria from Common Carp (Cyprinus carpio L.) intestine in winter (Northern Kazakhstan)

2020 ◽  
pp. 34-47
Author(s):  
Maira Urazova ◽  
◽  
Kunsulu Zakarya ◽  
Zinigul Sarmurzina ◽  
Gulmira Bissenova ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Common Carp ◽  
Universal Primers ◽  
Rrna Gene ◽  
Fish Farms ◽  
Commercial Fish ◽  
Freshwater Aquaculture

Currently, in Kazakhstan, chemical agents and antibiotics are widely used for treatment and prevention of fish diseases at fish farms. The use of probiotics as an alternative to antibiotics can help reduce the spread of antibiotic resistance in this area. The aim of the present study was to isolate the intestinal lactic acid bacteria of wintering carps. We assume that such bacteria can have more adaptive properties and can be used as probiotics for growing carp juveniles at fish farms. A probiotic characteristic of 22 lactic acid bacteria isolated from Common carp intestines was studied. Universal primers were used to determine the sequence of 16S rRNA gene fragments of lactic acid bacteria (LAB). Phylogenetic relationships of the isolates were estimated using the neighbor-joining (NJ) method in Mega 6,0. All identified isolates can grow in temperature range from 10° C to 37° C and in presence of bile salt. The isolated bacteria were screened for antibacterial activity, resistance to bile, resistance to antibiotics and growth at low temperatures. All isolates were tested in vitro for their ability to inhibit the growth of Shewanella xiamenensis, Pseudomonas taiwanensis, Ps. aeruginosa and Aeromonas punctata. As a result, 7 isolates with strong antagonistic activity were selected. 16S rDNA gene sequencing identified 4 isolates as Lactobacillus fermentum, 2 - as L. casei/paracasei and 1 - as Pediococcus pentosaceus. Antibiotic resistance profile of selected strains was studied, too. This study is the first attempt for Kazakhstan to isolate and study the representatives of the normal intestinal microflora of commercial fish species. Selective strains could be potential probiotics for freshwater aquaculture practices in Kazakhstan.

scholarly journals Farmers’ perception on quality of fish feed, brood stock and fingerling produced in commercial fish farms of Bangladesh

2020 ◽  
Vol 32 (1) ◽  
pp. 141-147
Author(s):  
MD. SAZEDUR RAHMAN ◽  
HASSAN MAHMUD RIAD ◽  
MD. SAYEM MAHMUD ◽  
MST. KANIZ FATEMA ◽  
MD. SHAHJAHAN
Keyword(s):  
Open Water ◽  
Production Quality ◽  
Fish Feed ◽  
Fish Farms ◽  
Brood Stock ◽  
Commercial Fish ◽  
Commercial Feed ◽  
Selection Of ◽  
Better Than

In Bangladesh, aquaculture has expanded, diversified, intensified and technologicallyadvanced due to the decline in fish production from the open water natural sources. Quality seedsare prime requirements for aquaculture production. Quality of seeds depends on the quality ofbroods used for spawning. Breeding performance depends on the quality of feeds and feedingmanagement during brood stock rearing. The present study focused on the evaluation of qualityof feed used in the fish farms, the performance of brood stock and fingerlings of selected carp,catfish and perch farmed in Bangladesh through a survey. On the basis of top fish productiondistricts, we divided the whole country into four hubs, such as Mymensingh, Jashore, Cumillaand Rajshahi. Data were collected from 300 individual respondents of commercial fish farms, 75from each hub. It has been found that most of the farm owners (91%) used commercial feedinstead of homemade feed, though a considerable number of respondents replied that quality ofhomemade feed was better than commercial feed. Although most of the farm owners collect fryfrom private/own hatcheries (69%), a considerable number of grow out farms owners replied thatthe fry of government hatcheries/brood bank, river and BFRI were better than private hatcheriesin terms of growth performance, disease resistance and survivability. Therefore, for sustainableaquaculture, farm owners should be careful for the selection of feed, brood and fingerling.

scholarly journals FISHING IN DRAINING PONDS OF MODERN FISH FARMS

2020 ◽  
Vol 2020 (4) ◽  
pp. 131-137
Author(s):  
Dmitriy Alekseevich Kostrykin ◽  
Yulia Nikolaevna Grozesku
Keyword(s):  
Mechanical Damage ◽  
Fish Farming ◽  
Fish Ponds ◽  
Fish Farms ◽  
Farmed Fish ◽  
Severe Injuries ◽  
Commercial Fish ◽  
Technological Stage ◽  
Time Frames ◽  
Excessive Accumulation

The article describeы the fishing process as a final technological stage that completes the cycle of fish breeding in the fish ponds. Fishing in the ponds, regardless of their category, is a difficult and energy-intensive process. The safety of farmed fish and the overall results of fish farming depend on the process of fishing. The well-known fishing methods are based on filtering fish when discharging water through fish catchers or other artificial structures. When water is drained from the pond, the fish moves to a fish catcher with the water flow, which contradicts its biological tendency to breast the current and prevents from its getting into the fish catcher or another artificial structure. In addition, the separation of fish from water by a grated water separator leads to the mechanical damage of the fish scales and reduces the number of alive fish. The technology of fish catching in draining ponds used at the small innovative enterprise SRK Sharapovsky (Kamyzyaksky district, Astrakhan region) has been analyzed. The absence of a fish catcher is a specific feature of the technology. Fishing in the ponds is carried out by using a dragnet during the pond drainage, starting the catch when the pond’s area is lowered to 1/3 or 1/4. The disadvantages of this technology include excessive accumulation of fish in a small volume of water, which can cause fish death or severe injuries to the underyearlings reared with commercial fish species. Choosing the optimal fishing gear or a device will allow to clearly plan and coordinate the work of the enterprise, because the fishing period is short and depends on the time frames and the market demands.

Fungal Diseases of Fish: A Review

2018 ◽  
Vol 3 (3) ◽  
pp. 1-5
Author(s):  
Ajay Patel
Keyword(s):  
Microbial Contamination ◽  
Fungal Infections ◽  
Fish Farming ◽  
Freshwater Fishes ◽  
Fish Farms ◽  
Commercial Fish ◽  
Chemical Contaminants ◽  
Ecological Stress ◽  
The World ◽  
Temperate Fish

Now a day, fishes are used for biomedical researches along with use as a food also. Chemical contaminants of marine environments are of momentous concern. Similar to other flora and fauna, fish can also be ill with various types of diseases. Freshwater fishes are an important protein source for people of many countries. Fish farming in various parts of the world has increased many folds in the last decade. Bacterial hemorrhagic septicemia, lernaeasis, saprolegniasis and anoxia are the most frequently occurring fish diseases in pond fishes. Fungal infections are among the most general diseases seen in temperate fish. Water moulds infections cause losses of freshwater fishes and their eggs in both natural and commercial fish farms. Although, infection as a result of microbial contamination does not frequently result in disease but ecological stress may upset the balance between the probable pathogens and their hosts. Prevention is, as always, the best medicine. Most infe ctions can be successfully treated if caught early.

COST EFFECTIVENESS OF BREEDING UNDERYEARLINGS OF COMMON CARP AND HERBIVOROUS FISHES IN THE FISH-BREEDING FARM OF ALMATY REGION OF KAZAKHSTAN

2017 ◽  
pp. 80-88
Author(s):  
Evgeniy Victorovich Fedorov
Keyword(s):  
Silver Carp ◽  
Ctenopharyngodon Idella ◽  
Herbivorous Fish ◽  
Average Weight ◽  
The South ◽  
Fish Farms ◽  
Commercial Fish ◽  
Herbivorous Fishes ◽  
Control Version ◽  
And Control

The article highlights the problem of commercial breeding of carp yearlings ( Cyprinus carpio ) in the fish farms in the south part of Kazakhstan with the purpose of the industrial cycle reduction. There is given a brief description of the experience in growing carp yearlings as a commercial fish product (pilot variant) and fish seeds (control variant) in polyculture with herbivorous fishes (grass carp ( Ctenopharyngodon idella ) and silver carp ( Hypophthalmichthys molitrix )) using various technological schemes, in the fish farms in the Almaty region. There are presented initial data on the stocking of experimental and control ponds by young adults; data on the final harvest of experimental ponds, including the average weight of commercial yearlings of carp and seeds of silver carp in the experimental version, and carp seeds and herbivorous fish in the control version; the fish productivity of ponds according to each polycultural specimen and the costs of artificial feed. Calculations are given on economic efficiency of growing yearlings in pilot and control variants, the profitability of growing commercial carp in the pilot version and the cost of fish seeds for carp and herbivorous fish in the control version. The most economically efficient technological schemes for growing yearlings of carp and herbivorous fish species in fish farms with channel ponds in the south of Kazakhstan have been proposed. The article shows that breeding carp yearlings is well-founded It presents the ways of planning of breeding the fish-seeds of carp and herbivorous fishes in fish-hatcheries and pond farms of Kazakhstan in modern economic conditions.

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