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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309096545
Category : Technology & Engineering
Languages : en
Pages : 510
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Book Description
Excess minerals in the diet and water of animals can have an adverse effect on animal health, consumers, and the environment. Preventing unsafe mineral exposure is a fundamental part of animal nutrition and management. At the request of the Food and Drug Administration, the National Academies convened a committee to make recommendations on animal tolerances and toxic dietary levels, updating a 1980 report on mineral tolerance in domestic animals. Based on a review of current scientific data and information, the report sets a "maximum tolerable level" (MTL) for each mineral as it applies to the diets of farm animals, poultry, and fish. The report includes an analysis of the effects of toxic levels in animal diets, and it identifies elements that pose potential human health concerns. The report recommends research that includes a better characterization of animal exposure to minerals through feedstuffs; a better understanding of the relationship between mineral concentrations in feed and water and the levels in consumer products such as meat, milk, and eggs; and more research on the maximum tolerable level of minerals for aquatic and companion animals.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309096545
Category : Technology & Engineering
Languages : en
Pages : 510
Get Book Here
Book Description
Excess minerals in the diet and water of animals can have an adverse effect on animal health, consumers, and the environment. Preventing unsafe mineral exposure is a fundamental part of animal nutrition and management. At the request of the Food and Drug Administration, the National Academies convened a committee to make recommendations on animal tolerances and toxic dietary levels, updating a 1980 report on mineral tolerance in domestic animals. Based on a review of current scientific data and information, the report sets a "maximum tolerable level" (MTL) for each mineral as it applies to the diets of farm animals, poultry, and fish. The report includes an analysis of the effects of toxic levels in animal diets, and it identifies elements that pose potential human health concerns. The report recommends research that includes a better characterization of animal exposure to minerals through feedstuffs; a better understanding of the relationship between mineral concentrations in feed and water and the levels in consumer products such as meat, milk, and eggs; and more research on the maximum tolerable level of minerals for aquatic and companion animals.
Author: Harry H. Posey
Publisher: Colorado Geological Survey Department of Natural Resources
ISBN:
Category : Science
Languages : en
Pages : 406
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Book Description
Summitville is a mine site located at 11,500 feet elevation in the San Juan Mountains of Colorado, USA. Mined intermittently for gold & cooper from 1870, the mine was abandoned due to bankruptcy in 1992. Remaining was a 10 million ton heap leach pad fully loaded with cyanide, 15 million tons of sulfide-rich waste rock, a draining mine adit & 550 acres of disturbed earth. Releases of acidic, metal-laden drainage prior to the bankruptcy are blamed for damage to a trout fishery downstream. Today the mine is a Superfund site being managed by the US Environmental Protection Agency. THE PROCEEDINGS range in content from geochemistry to agriculture. Its diverse studies include water chemistry, metal uptake by soils, plants, livestock & wetlands, airborne imaging spectroscopy, ore deposit geology, sediment-water metal flux, mine engineering, groundwater hydrology, water treatment technologies including biotreatment & legal assessments of the Superfund process. The volume should be useful to scientists & engineers in earth, environmental & mining sciences & to attorneys & public policy analysts. The studies, all original, were conducted mainly by the US Geological Survey, US Environmental Protection Agency & Colorado State University. This book would serve well as an environmental science text or case study for an upper level undergraduate or graduate level course.
Author: University of California Agricultural Extension Service
Publisher:
ISBN:
Category : Agricultural extension work
Languages : en
Pages : 448
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 584
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Book Description
Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1340
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Book Description
Author: George C. Fahey
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 1032
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Book Description
Provides a historical foundation as well as a review of the state-of- the-art in forage science, detailing 25 years of progress in forage quality, evaluation, and utilization, along with the latest developments and new directions for future research. The volume is divided into six sections: overview of forage science; identification and quantitative measurement of forage quality components; intake as a critical element of forest quality; role of digestion and metabolism in determining forage quality; integrating concepts affecting changes in forage quality; and improving forage quality and evaluation. No index. Member price, $36. Annotation copyright by Book News, Inc., Portland, OR
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1732
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Book Description
Author: University of California (System). Salinity/Drainage Research Program
Publisher:
ISBN:
Category : Agricultural pollution
Languages : en
Pages : 522
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Book Description
Author: American Veterinary Medical Association
Publisher:
ISBN:
Category : Veterinary medicine
Languages : en
Pages : 1082
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309051266
Category : Science
Languages : en
Pages : 188
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Book Description
In the years since the third edition of this indispensable reference was published, a great deal has been learned about the nutritional requirements of common laboratory species: rat, mouse, guinea pig, hamster, gerbil, and vole. The Fourth Revised Edition presents the current expert understanding of the lipid, carbohydrate, protein, mineral, vitamin, and other nutritional needs of these animals. The extensive use of tables provides easy access to a wealth of comprehensive data and resource information. The volume also provides an expanded background discussion of general dietary considerations. In addition to a more user-friendly organization, new features in this edition include: A significantly expanded section on dietary requirements for rats, reporting substantial new findings. A new section on nutrients that are not required but that may produce beneficial results. New information on growth and reproductive performance among the most commonly used strains of rats and mice and on several hamster species. An expanded discussion of diet formulation and preparationâ€"including sample diets of both purified and natural ingredients. New information on mineral deficiency and toxicity, including warning signs. This authoritative resource will be important to researchers, laboratory technicians, and manufacturers of laboratory animal feed.
