Download or read book Rearing Temperature s Effect on the Growth Performance Nutrient Utilization and Immune Response of Growth Hormone Transgenic Female Triploid Atlantic Salmon Salmo Salar written by Eric Ignatz and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis examined the effect of rearing temperature on AquAdvantage Salmon (AAS; growth hormone transgenic female triploid Atlantic salmon) reared at 10.5°C, 13.5°C, 16.5°C from first feed to 1500 g. Fish reared at 16.5°C reached 1500 g in the shortest amount of time, however, thermal-unit growth coefficient (TGC) results showed that salmon reared at 10.5°C exhibited higher growth rates for most of the trial. Through analysis of whole-body and fillet samples at various growth stages, it was determined that rearing temperature significantly influenced composition, deposition rates and retention efficiencies of numerous nutrients. For example, AAS reared at 16.5°C diverted lipid storage away from muscle tissue into their viscera and were less efficient at retaining important nutrients, such as omega-3 fatty acids. By assessing the antiviral immune gene expression response of fish injected with polyriboinosinic polyribocytidylic acid (pIC), it was concluded that temperature significantly influenced immune responses of AAS. Based on transcript expression responses, as measured by real-time quantitative polymerase chain reaction (qPCR) analysis, it appeared that a more robust immune response was mounted by fish reared at 10.5°C compared to 16.5°C. Collectively, these results help establish foundational knowledge that can guide future research to optimize commercial rearing of AquAdvantage Salmon.
Download or read book Potential for Ecological Effects and Gene Flow Resulting from Growth Hormone Transgenic Atlantic Salmon salmo Salar Interactions with Wild Conspecifics written by Darek Thomas Rhẻal Moreau and published by . This book was released on 2011 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Family specific Differences in Growth Rate and Hepatic Gene Expression in Triploid Growth Hormone GH Transgenic Atlantic Salmon Salmo Salar L written by Qingheng Xu and published by . This book was released on 2012 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hematology and Metabolic Rate of Diploid and Triploid Growth Hormone Transgenic Atlantic Salmon Salmo Salar microform written by Andrew Timothy Cogswell and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2001 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Responses of Myogenesis and Metabolism to Temperature and Growth Factors in Fish written by Haude M. Levesque and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish are becoming more important in the human diet as they represent a high protein source and a source of essential free fatty acids. Fish production from aquaculture has been improved by the selection of faster growing individuals, but fish continue to remain an expensive nutrient source. A better understanding of fish growth mechanisms and regulation will help to further improve aquaculture techniques. Moreover, studying those factors that stimulate cells implicated in fish muscle growth could provide useful knowledge and possible applications in mammalian muscle illness. In contrast to mammals and birds, fish growth is generally indeterminate and most fish grow throughout their life by the formation of new muscle cells (hyperplasia) and/or by increasing muscle cell volume (hypertrophy). Proliferation and differentiation of muscle cells are regulated by transcription factors called myogenic regulatory factors (MRF). MyoD and myogenin are MRF involved in cell proliferation and differentiation in vertebrates. Many factors affect fish growth including external factors such as temperature and food availability, and internal factors, principally hormones. The effects of temperature on fish growth and metabolism were assessed in Atlantic cod (Gadus morhua) and rainbow trout (Oncorhynchus mykiss ), and the effects of hormones were investigated using Atlantic salmon (Salmo salar) made transgenic for growth hormone (GH) and rainbow trout fed beta-agonists. In order to understand the mechanisms and regulation of myogenesis, morphometric parameters were recorded, metabolic enzymes were assayed in liver and skeletal muscle and myogenesis was measured in white and red muscles in each experiment. Moreover, several growth factors and hormones were tested in vitro on myosatellite cell proliferation and differentiation. The results demonstrate that metabolism and myogenesis are not affected by the same factors, and an increase in growth is not absolutely accompanied by an effect on tissue metabolism. High and constant water temperatures increased juvenile cod growth though there were no significant alterations in liver and white muscle metabolism. In contrast, factors such as photoperiod and internal cycles appear to be more important in the control of cod tissue metabolism. However, myogenesis was significantly decreased and metabolism increased in rainbow trout exposed to cold compared with high temperatures. Growth hormone, insulin-like-growth factor I (IGF-1) and fibroblast growth factor (FGF) were found to increase in vitro myosatellite cell proliferation in salmonids. My results also show that proliferation and differentiation of salmon muscle does not happen simultaneously but may alternate in red and white muscles. These results taken together contribute to a better understanding offish muscle growth and metabolism and will be used in future studies to optimize fish growth in aquaculture.
Download or read book Selective Breeding in Aquaculture an Introduction written by Trygve Gjedrem and published by Springer Science & Business Media. This book was released on 2010-03-17 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The foundation of quantitative genetics theory was developed during the last century and facilitated many successful breeding programs for cultivated plants and t- restrial livestock. The results have been almost universally impressive, and today nearly all agricultural production utilises genetically improved seed and animals. The aquaculture industry can learn a great deal from these experiences, because the basic theory behind selective breeding is the same for all species. The ?rst published selection experiments in aquaculture started in 1920 s to improve disease resistance in ?sh, but it was not before the 1970 s that the ?rst family based breeding program was initiated for Atlantic salmon in Norway by AKVAFORSK. Unfortunately, the subsequent implementation of selective breeding on a wider scale in aquaculture has been slow, and despite the dramatic gains that have been demonstrated in a number of species, less than 10% of world aquaculture production is currently based on improved stocks. For the long-term sustainability of aquaculture production, there is an urgent need to develop and implement e- cient breeding programs for all species under commercial production. The ability for aquaculture to successfully meet the demands of an ever increasing human p- ulation, will rely on genetically improved stocks that utilise feed, water and land resources in an ef?cient way. Technological advances like genome sequences of aquaculture species, and advanced molecular methods means that there are new and exciting prospects for building on these well-established methods into the future.
Download or read book The Hematology and Metabolic Rate of Diploid and Triploid Growth Hormone Transgenic Atlantic Salmon Salmo Salar written by Andrew Timothy Cogswell and published by . This book was released on 2001 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cardiorespiratory Modifications and Limitations in Growth Hormone Transgenic Atlantic Salmon Salmo Salar written by Eric Deitch and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Potential for Ecological Effects and Gene Flow Resulting from Growth Hormone Transgenic Atlantic Salmon salmo Salar Interactions with Wild Conspecifics written by Darek Thomas Rhẻal Moreau and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquaculture and Fisheries Biotechnology written by Rex A. Dunham and published by CABI. This book was released on 2023-02-28 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: The genetic improvement of fish for aquaculture and related fisheries has seen huge advances over recent years. Building upon the previous two editions of Aquaculture and Fisheries Biotechnology: Genetic Approaches, this 3rd edition offers a presentation of traditional selective breeding, modern genetic biotechnology, genomics, gene transfer and gene editing, and the latest developments in genetic biotechnology such as epigenetics, xenogenesis and genome-wide association study coupled with commercial application, the impact of government regulation and expectations for the future. It provides a firm grounding in relevant aspects of classical genetics, before focusing on particular aspects such as sex reversal and breeding as applied in aquaculture and fisheries. It also explores how more recent molecular genetics, genomics and biotechnology techniques can be used and combined in improvement programmes for fish and aquaculture species. A glossary explains the latest terminology used in biotechnology and genetics. This book will be useful for research scientists and students in marine biotechnology, aquaculture biotechnology, and fish genetics and breeding.
Download or read book Sex Control in Aquaculture written by Hanping Wang and published by John Wiley & Sons. This book was released on 2018-11-08 with total page 1810 pages. Available in PDF, EPUB and Kindle. Book excerpt: Awarded Bookauthority's "Best Aquaculture Books of all Time" A comprehensive resource that covers all the aspects of sex control in aquaculture written by internationally-acclaimed scientists Comprehensive in scope, Sex Control in Aquaculture first explains the concepts and rationale for sex control in aquaculture, which serves different purposes. The most important are: to produce monosex stocks to rear only the fastest-growing sex in some species, to prevent precocious or uncontrolled reproduction in other species and to aid in broodstock management. The application of sex ratio manipulation for population control and invasive species management is also included. Next, this book provides detailed and updated information on the underlying genetic, epigenetic, endocrine and environmental mechanisms responsible for the establishment of the sexes, and explains chromosome set manipulation techniques, hybridization and the latest gene knockout approaches. Furthermore, the book offers detailed protocols and key summarizing information on how sex control is practiced worldwide in 35 major aquaculture species or groups, including fish and crustaceans, and puts the focus on its application in the aquaculture industry. With contributions from an international panel of leading scientists, Sex Control in Aquaculture will appeal to a large audience: aquaculture/fisheries professionals and students, scientists or biologists working with basic aspects of fish/shrimp biology, growth and reproductive endocrinology, genetics, molecular biology, evolutionary biology, and R&D managers and administrators. This text explores sex control technologies and monosex production of commercially-farmed fish and crustacean species that are highly in demand for aquaculture, to improve feed utilization efficiency, reduce energy consumption for reproduction and eliminate a series of problems caused by mixed sex rearing. Thus, this book: Contains contributions from an international panel of leading scientists and professionals in the field Provides comprehensive coverage of both established and new technologies to control sex ratios that are becoming more necessary to increase productivity in aquaculture Includes detailed coverage of the most effective sex control techniques used in the world's most important commercially-farmed species Sex Control in Aquaculture is the comprehensive resource for understanding the biological rationale, scientific principles and real-world practices in this exciting and expanding field.
Download or read book The State of the World s Aquatic Genetic Resources for Food and Agriculture written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-07-24 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conservation, sustainable use and development of aquatic genetic resources (AqGR) is critical to the future supply of fish. The State of the World’s Aquatic Genetic Resources for Food and Agriculture is the first ever global assessment of these resources, with the scope of this first Report being limited to cultured AqGR and their wild relatives, within national jurisdiction. The Report draws on 92 reports from FAO member countries and five specially commissioned thematic background studies. The reporting countries are responsible for 96 percent of global aquaculture production. The Report sets the context with a review of the state of world’s aquaculture and fisheries and includes overviews of the uses and exchanges of AqGR, the drivers and trends impacting AqGR and the extent of ex situ and in situ conservation efforts. The Report also investigates the roles of stakeholders in AqGR and the levels of activity in research, education, training and extension, and reviews national policies and the levels of regional and international cooperation on AqGR. Finally, needs and challenges are assessed in the context of the findings from the data collected from the countries. The Report represents a snapshot of the present status of AqGR and forms a valuable technical reference document, particularly where it presents standardized key terminology and concepts.
Download or read book Bioenergetics of Growth Enhanced Transgenic Atlantic Salmon Salmo Salar Reared Under Simulated Aquaculture Conditions written by J. Todd Cook and published by . This book was released on 1999 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Extended Day Length on Early Sexual Maturation and Growth in Atlantic Salmon Salmo Salar Reared in Sea Cages written by and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two year-classes of Atlantic salmon, represented by a line selected for growth performance and a control line in one year-class and an unselected control line from a similar gene pool in a second year-class, were reared in sea cages. The fish were used to evaluate the effects of extended day length, using artificial light from fluorescent tubes, on growth and sexual maturity as grilse (maturation after one sea-year).
Download or read book An Investigation of Growth and Survival of Juvenile Triploid Atlantic Salmon Salmo Salar During Freshwater Rearing and the Determination of Ploidy Status Using Flow Cytometry written by Sorcha Wheatley and published by . This book was released on 1991 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioenergetics of Growth Enhanced Transgenic Atlantic Salmon Salmo Salar Reared Under Simulated Aquaculture Conditions written by J. Todd Cook and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
