scholarly journals Perspectives on Salmon Aquaculture: Current Status, Challenges and Genetic Improvement for Future Growth

2022 ◽  
Author(s):  
James E. Barasa ◽  
Purity Nasimiyu Mukhongo ◽  
Cynthia Chepkemoi Ngetich
Keyword(s):  
Food Resource ◽  
Current Status ◽  
Feed Formulation ◽  
Infectious Salmon Anemia ◽  
Environmental Footprints ◽  
Genome Sequencing Effort ◽  
Market Trends ◽  
Infectious Pancreatic Necrosis ◽  
Feed Costs ◽  
Production Industry

With an estimated global value of US$15.6 billion, farmed salmonids represent a precious food resource, which is also the fastest increasing food producing industry with annual growth of 7% in production. A total average of 3,594,000 metric tonnes was produced in 2020, behind Chinese and Indian carps, tilapias and catfishes. Lead producers of farmed salmonids are Norway, Chile, Faroe, Canada and Scotland, stimulated by increasing global demand and market. However, over the last 2 years, production has been declining, occasioned by effects of diseases as well as rising feed costs. Over the last year, production has declined sharply due to effects of covid-19. This chapter reviews the species in culture, systems of culture, environmental footprints of salmon culture, and market trends in salmon culture. Burden of diseases, especially Infectious pancreatic Necrosis, Infectious salmon anemia and furunculosis, as well as high cost of feed formulation, key challenges curtailing growth of the salmon production industry, are discussed. A review is made of the international salmon genome sequencing effort, selective breeding for disease resistance, and the use of genomics to mitigate challenges of diseases that stifle higher production of salmonids globally.

PERSPECTIVE DEVELOPMENT OF WORLD PRODUCTION OF FEEDS FOR AQUACULTURE: ALTERNATIVE SOURCES OF RAW MATERIALS

2017 ◽  
pp. 67-78
Author(s):  
Lina Yurievna Lagutkina
Keyword(s):  
Raw Materials ◽  
Limiting Factors ◽  
Current Status ◽  
Feed Production ◽  
The World ◽  
Market Trends ◽  
Alternative Sources ◽  
World Industry ◽  
First Time ◽  
A Current

The author of the article discloses the prospects of development of the world feed production for aquaculture based on the analysis of key innovative technological and market trends. The author specifies that shortage, high cost, low ecological compatibility of traditional raw materials - fish flour - are among major limiting factors in the development of production of feeds for aquaculture. This fact, in turn, limits sustainable development of aquaculture both in Russia, and in the world in general. The article presents the overview of a current status of the world industry of feed production in aquaculture, where the regional situation is studied, as well. For the first time, there is given the outlook of innovative technologies in feed production based on the alternative sources of protein (on the example of projects of leading aquabiotechnological companies) which will determine industry’s objectives for the mid-term perspective.

scholarly journals Nonlinear Feed Formulation For Broiler: Modeling And Optimzation

2020 ◽  
Vol 8 (12) ◽  
pp. 262-275
Author(s):  
Marcel Alessandro de Almeida ◽  
Manoel Garcia Neto ◽  
Leda Gobbo de Freitas Bueno ◽  
Max José De Araujo Faria Junior ◽  
Marcos Franke Pinto
Keyword(s):  
Broiler Chickens ◽  
Minimum Cost ◽  
Economic Factor ◽  
Profit Margin ◽  
Feed Consumption ◽  
Total Energy Consumption ◽  
Price Variation ◽  
Feed Formulation ◽  
Current Scenario ◽  
Feed Costs

The current scenario requires the application of new computational tools for the feed formulation strategy that uses mathematical modeling in decision making. Noteworthy is the nonlinear programming, which aims not only to formulate a diet that meets the needs of the animal, but also the minimum cost and the maximum profit margin. Thus, the work aimed to validate the use of the nonlinear model (NLM), with maximization of the economic return, through estimates of animal performance and feed costs, according to the price variation of the kg of the broiler (price historical average of 2009 and 2010), the phases of creation and sex. For this purpose, 480 broiler broiler chickens, 240 males and 240 females of the same strain (Cobb 500) were used, from 1 to 56 days of age. The experimental design was entirely randomized, totaling 6 treatments (increasing or decreasing the average historical price of live chicken by 25% or 50%), with 4 replicates and 10 broiler chickens per experimental plot. Performance (weight gain and feed consumption), total energy consumption and profit margin were evaluated. Regarding the formulation principle (Linear and Nonlinear), the performance was very similar in relation to the studied parameters. However, when simulated values of 50% below the historical average, performance was significantly impaired in this specific condition. However, due to the profit margin, it demonstrated that the principle of nonlinear formulation allows to significantly reduce losses (P <0.05), mainly in unfavorable conditions of the price of chicken in the market. It is concluded that the nonlinear principle is more appropriate, since the requirements of all nutrients are automatically adjusted by the mathematical model and with the premise of increasing profitability, different from the linear one, which is to achieve maximum performance and not is directly related to the economic factor.

scholarly journals A Review of Landfill Leachate Treatment by Microalgae: Current Status and Future Directions

Processes ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 384 ◽  
Author(s):  
Tabish Nawaz ◽  
Ashiqur Rahman ◽  
Shanglei Pan ◽  
Kyleigh Dixon ◽  
Burgandy Petri ◽  
...  
Keyword(s):  
Solid Waste ◽  
Landfill Leachate ◽  
Scale Up ◽  
Resource Recovery ◽  
Current Status ◽  
Future Research ◽  
Potential Candidate ◽  
Leachate Treatment ◽  
Treatment Scenario ◽  
Environmental Footprints

Solid waste generation has been projected to increase worldwide. Presently, the most applied methodology to dispose of solid waste is landfilling. However, these landfill sites, over time release a significant quantity of leachate, which can pose serious environmental issues, including contamination of water resources. There exist many physicochemical and biological landfill leachate treatment schemes with varying degrees of success. With an increasing focus on sustainability, there has been a demand for developing eco-friendly, green treatment schemes for landfill leachates with viable resource recovery and minimum environmental footprints. Microalgae-based techniques can be a potential candidate for such a treatment scenario. In this article, research on microalgae-based landfill leachate treatments reported in the last 15 years have been summarized and critically reviewed. The scale-up aspect of microalgae technology has been discussed, and the related critical factors have been elucidated. The article also analyzes the resource recovery potential for microalgal techniques with respect to leachate treatment and explores possible methodologies to minimize the environmental footprints of the microalgae-based treatment process. The future research potential in the area has been identified and discussed.

scholarly journals Factors Affecting Compulsory Purchase of Land for Public Needs in Ukraine

2020 ◽  
Vol 12 ◽  
Author(s):  
Alina Lizunova
Keyword(s):  
Transport Infrastructure ◽  
Current Status ◽  
The Sustainable Development ◽  
Factors Affecting ◽  
Analysis Technique ◽  
Market Trends ◽  
Development Concept ◽  
Compulsory Purchase ◽  
Privately Owned ◽  
Current Stage

At the current stage of adapting the goals of the Sustainable Development Concept, compulsory purchase of land to meet public needs may be an effective tool. Public needs may require privately owned land, but it is sometimes only possible to negotiate with the owners through the land compulsory purchase mechanism. When implementing such projects it is necessary to take into account certain factors that have an impact on this process at each stage of the execution of works. To determine these factors is necessary to make some analysis that will identify primary and secondary factors determine their importance and divide them into certain groups. To determine the main groups of factors should be used PEST analysis technique that is often used to assess key market trends. The results of PEST analysis can be used to determine the list of threats and opportunities for the implementation of projects for the construction of linear objects of transport infrastructure, it is advisable to supplement the basic elements of PEST analysis, such as Politic (P), Economic (E), Social (S) and Technical (T), with the following indicators: P (Planning) Е (Environmental), L (Legal). Through PEST analysis is necessary to determine each factor and not just describe the current status, and predict its change over the next 3-5 years. The most important and the most difficult are to determine the balance between the factors and to account for their interaction.

scholarly journals Current Status of the Algae Production Industry in Europe: An Emerging Sector of the Blue Bioeconomy

2021 ◽  
Vol 7 ◽  
Author(s):  
Rita Araújo ◽  
Fatima Vázquez Calderón ◽  
Javier Sánchez López ◽  
Isabel Costa Azevedo ◽  
Annette Bruhn ◽  
...  
Keyword(s):  
Value Chain ◽  
Sustainable Growth ◽  
Current Status ◽  
Detailed Characterization ◽  
Algae Biomass ◽  
Important Addition ◽  
Production Industry ◽  
The Eu ◽  
Comprehensive Mapping

The EU Bioeconomy Strategy aims to support the sustainable growth and development of the EU bio-based sectors while creating jobs, innovation and services. Despite the recognized potential of the algae biomass value chain, significant knowledge gaps still exist regarding the dimension, capability, organization and structure of the algae production in Europe. This study presents and analyses the results of a comprehensive mapping and detailed characterization of the algae production at the European scale, encompassing macroalgae, microalgae, and the cyanobacteria Spirulina. This work mapped 447 algae and Spirulina production units spread between 23 countries, which represents an important addition to the reported number of algae producing countries. More than 50% of these companies produce microalgae and/or Spirulina. Macroalgae production is still depending on harvesting from wild stocks (68% of the macroalgae producing units) but macroalgae aquaculture (land-based and at sea) is developing in several countries in Europe currently representing 32% of the macroalgae production units. France, Ireland, and Spain are the top 3 countries in number of macroalgae production units while Germany, Spain, and Italy stand for the top 3 for microalgae. Spirulina producers are predominantly located in France, Italy, Germany, and Spain. Algae and Spirulina biomass is directed primarily for food and food-related applications including the extraction of high-value products for food supplements and nutraceuticals. Algae production in Europe remains limited by a series of technological, regulatory and market-related barriers. Yet, the results of this study emphasize that the European algae sector has a considerable potential for sustainable development as long as the acknowledged economic, social and environmental challenges are addressed.

Evolution, Current Status and Prospects of Phyto-Repellents against Mosquitoes

2017 ◽  
Vol 8 ◽  
pp. 54-73
Author(s):  
Sumangala K. Bhat ◽  
Ganessin Aravind
Keyword(s):  
Product Development ◽  
Viral Disease ◽  
Market Analysis ◽  
Current Status ◽  
Plant Origin ◽  
Wide Geographical Distribution ◽  
Increasing Trend ◽  
Innovative Products ◽  
Mosquito Repellents ◽  
Market Trends

Mosquitoes enjoy wide geographical distribution and act as vectors for diverse pathogenic organisms from viruses to protozoans. Mosquito-borne diseases have a long history with some of them like Malaria dominating the scene for centuries. New diseases like Dengue fever, Zika viral disease etc. get added to the list from time to time. Vector control is an effective and widely accepted strategy in the management of mosquito-borne diseases. Mosquito repellents are an important product range extensively used for the management of mosquito-borne diseases. The research and development activities on mosquito repellents of plant origin have been reviewed in this article and classified into three categories like research reports, patents and commercial products, based on their outcomes. The relevance of plant-based mosquito repellents is discussed with reference to current societal and market trends. The review has revealed an increasing trend among researchers towards product development and entry of effective and innovative products into the market. The market analysis reports also confirm competitive advantage for herbal repellents in the coming years.

scholarly journals Fish feeds and feed management practices in the Kenyan aquaculture sector: Challenges and opportunities

2021 ◽  
Vol 24 (1) ◽  
pp. 82-89
Author(s):  
Jonathan Munguti ◽  
Hannington Odame ◽  
James Kirimi ◽  
Kevin Obiero ◽  
Erick Ogello ◽  
...  
Keyword(s):  
Management Practices ◽  
Cost Effective ◽  
Current Status ◽  
Fish Feed ◽  
High Quality ◽  
Fish Food ◽  
Feed Formulation ◽  
Feed Industry ◽  
Feed Management ◽  
Fish Feeds

Abstract Feeds and feed management practices are key to the development of the aquaculture sector. To achieve high levels of aquaculture production, fish farmers need nutritionally adequate and cost-effective feeds, which are coupled with good feed management practices. Access to high quality and cost-effective feeds is one of the prerequisites to successful fish farming. This paper reviews the current status of the Kenyan fish feed industry and feed management practices. The review includes constraints and opportunities in fish feeds from a farmer’s perspective. The review shows that the fish feed industry has been boosted by the development of fish feed standards, which has ensured access to high-quality fish feeds by all farmers. Feed management practices considerably impact on the economic performance in fish production. Thus, adopting appropriate feed management technologies and feeding strategies is instrumental in maximizing aquaculture productivity. Some of the major challenges faced by fish farmers in the feed sector including limited access to finance, lack of appropriate technical innovations, limited knowledge in feed formulation and processing and poor feed handling and storage are discussed. These challenges pose limitation in investment opportunities for a viable and sustainable fish feed processing and manufacturing to meet the rising demand occasioned by increased demand for fish food in Kenya. There is a huge potential to develop public-private partnerships with farmer groups to improve access to training and information dissemination on feeds availability and quality. Training fish farmers on feed formulation using locally available feed ingredients provide an opportunity to reduce feed costs, increase feeding efficiency and improve profitability. This paper reviews the current status of the Kenyan fish feed industry and feed management practices including constraints and opportunities from a farmer’s perspective.

Sign in / Sign up

Export Citation Format

Share Document