Grassland and Animal Production
نویسندگان
چکیده
منابع مشابه
Fao Animal Production and Health
Many local livestock breeds and minor species are in decline and may be lost because they cannot compete with high-yielding exotic breeds. Conserving these breeds is important: many have unique traits, such as hardiness and disease resistance, that are vital for future livestock production. One way to help ensure their survival may be to sell products from these breeds to high-value, specialist...
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Knowledge of the relationship between stocking rate or grazing intensity and plant production is fundamental to the sustainable management of rangelands. The general management paradigm is that plant production declines as stocking rate increases. Our objective was to determine the impact of stocking rate on herbaceous production of a sand sagebrush (Artemisia filifolia Torr.)grassland. Stockin...
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Charles E. Mitchell Department of Ecology, Evolution, and Behavior, University of Minnesota, St Paul, MN 55108, USA Correspondence and present address: C. E. Mitchell, Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14850, USA E-mail: [email protected] Abstract Current theories of trophic regulation of ecosystem net primary production and plant biomass incorporate...
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Weather and climate influence both farm animal production and agronomic production. There are many differences, some obvious and some subtle, in the way animals and plants respond directly and indirectly to given environments, however. Chapter 9 focuses principally on the applications of meteorology to agronomic agriculture. This chapter is biometeorologically oriented: it explores the applicat...
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Introduction What is the impact of food animal production in the world? What role does it play in human activity, who benefits from it, who pays costs associated with it and how should it proceed in the future? The majority of this account concerns the relationships between efforts to improve animal production efficiency and acceptability of aspects of the systems which have been developed. How...
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ژورنال
عنوان ژورنال: Nature
سال: 1947
ISSN: 0028-0836,1476-4687
DOI: 10.1038/160249a0