National Fish Strain Registry, Catfish (NFSR-C) PDF Download
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Author: Harold L. Kincaid
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 108
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Book Description
Author: Harold L. Kincaid
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 108
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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Book Description
Author: Harold L. Kincaid
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 50
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Book Description
Author: Harold L. Kincaid, Leslie J. Mengel, Stephen Brimm
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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Book Description
Author: Harold L. Kincaid
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 108
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Book Description
Author: Danny Hunter
Publisher: Routledge
ISBN: 1317753291
Category : Nature
Languages : en
Pages : 711
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Book Description
The world relies on very few crop and animal species for agriculture and to supply its food needs. In recent decades, there has been increased appreciation of the risk this implies for food security and quality, especially in times of environmental change. As a result, agricultural biodiversity has moved to the top of research and policy agendas. This Handbook presents a comprehensive overview of our current knowledge of agricultural biodiversity in a series of specially commissioned chapters. It draws on multiple disciplines including plant and animal genetics, ecology, crop and animal science, food studies and nutrition, as well as social science subjects which explore the socio-economic, cultural, institutional, legal and policy aspects of agricultural biodiversity. It focuses not only on the core requirements to deliver a sustainable agriculture and food supply, but also highlights the additional ecosystem services provided by a diverse and resilient agricultural landscape and farming practices. The book provides an indispensable reference textbook for a wide range of courses in agriculture, ecology, biodiversity conservation and environmental studies.
Author: C.S. Tucker
Publisher: Elsevier
ISBN: 0080472206
Category : Technology & Engineering
Languages : en
Pages : 686
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Book Description
The history of channel catfish farming in the United States serves as a model for the development of pond-based aquaculture industries worldwide. Channel catfish farming is the largest and economically most important aquaculture industry in the United States. In 2003, over 300,000 metric tons (662 million pounds) of channel catfish were processed, representing about half the total United States aquaculture production. Demand for farm-raised catfish is strong, with record processing years in 2002 and 2003. In 22 chapters written by active scientists in the field, Biology and Culture of Channel Catfish comprehensively synthesizes over 30 years of research on this American icon. Throughout the book, fundamental biological aspects of channel catfish are linked to practical culture techniques. Topics include: • Latest information on reproductive physiology, genetics, and breeding • Comprehensive treatment of catfish nutrition, feeds, and feeding practices • Water quality management and pond dynamics • In-depth review of immunology in channel catfish • Practical information on diseases and health management • Techniques for commercial culture, including innovative techniques such as raceways, recirculating systems, and partitioned aquaculture systems • Catfish economics and marketing • Exploration of environmental concerns, including recommended Best Management Practices
Author:
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 432
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Book Description
Author: National Analysts, inc
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 112
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Book Description
Author: R. Kahler Martinson
Publisher:
ISBN:
Category : Anas carolinensis
Languages : en
Pages : 46
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Book Description
Hunters in 20 States of the Central and Mississippi flyways participated in an experiment 9-day teal hunting season in September 1965. During this special season, hunters were required to obtain a free permit and could shoot four teal a day (blue-winged teal, green-winged teal, and cinnamon teal (Spatula cyanoptera), singly or in the aggregate) and have eight in possession. Data were obtained by means of a mail questionnaire survey, a teal wing collection survey, and a hunter performance (spy-blind) survey. A total of 201,972 hunting permits was issued, 49,359 in the Central Flyway and 152,613 in the Mississippi Flyway. Of the applicants who obtained permit, 55 percent hunted. Hunters bagged 448,060 ducks, including 404,710 blue-winged teal and 39,610 green-winged teal. The harvest of illegal ducks, not recognized as such, was 3,600 (from the wing collection), but the actual illegal kill, based on the hunter performance survey, was estimated to be 33,736. The species most prevalent in the illegal kill were wood ducks (13,000) and mallards (7,088). Percentages of cripples and unretrieved ducks revealed by the hunter performance survey were added to these totals, which together with a projected kill for the regular season, gave a total hunting loss by species. These totals were converted to percentages of the fall populations and compared with proportions of the populations killed in previous years. These data suggest that the experimental teal season in 1965 provided 111,085 hunters 257,180 days of recreation without adversely affecting the continental population of and waterfowl species. Additional data are needed, perhaps from three special teal seasons, in order to establish whether the bagged ducks add to or reduce nonhunting mortality for the teal species involved.
