نتایج جستجو برای: livestock production activities
تعداد نتایج: 970045 فیلتر نتایج به سال:
This paper addresses the context of decisions about the application of biotechnology in livestock agriculture. It specifically addresses the role of transgenic livestock in agriculture. Key innovations in livestock genetics and reproductive technology in the last century have laid the foundations upon which genetic engineering can be applied to livestock in the post-genomics era. Transgenesis i...
This paper explores resource allocation decisions in Kenyan rangelands. We analyse choice decision of the producer to enter or not to enter livestock production, and the optimal herd size that is expected to yield maximum benefits to the herder. We apply the Heckman two-stage estimation procedure to correct for selectivity bias in the livestock production, optimal income and optimal herd size p...
In a recent survey by the United States Department of Agriculture (1961) it was estimated that the animal-protein shortage in the deficit countries, in terms of non-fat milk solids, was the equivalent of 1.8 million metric tons or roughly one-third of the U.S. annual milk production. The most critical shortages were noted to be in the Far East, followed by communist Asia, Africa and Latin Ameri...
Photos on front cover and page 3: All photos are from the FAO Mediabase. The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authoriti...
BACKGROUND European studies suggest that living near high-density livestock production increases the risk of sequence type (ST) 398 methicillin-resistant Staphylococcus aureus (MRSA) colonization. To our knowledge, no studies have evaluated associations between livestock production and human infection by other strain types. OBJECTIVES We evaluated associations between MRSA molecular subgroups...
The problem of food security during the last few decades has acquired a global character. Population growth, reduction of farmland suitable for agriculture and ecological factors has led to a sharp increase in food demand. In such conditions, the role of countries which are able to increase the export of agricultural production in short-term periods is rising. Ukraine has great opportunities fo...
The Food and Agriculture Organization of the United Nations predicts that the projected massive global increase in demand for livestock products will continue for several decades. According to Delgado et al. (1999), it is appropriate to term the course of these events a " Livestock Revolution, " which, as opposed to the Green Revolution, is driven by demand. While more precise production techno...
Angiosperms diversification was primarily driven by pollinator agents, but non-pollinator agents also promoted floral evolution. Gentiana lutea shows pollinator driven flower color variation in NW Spain. We test whether insect herbivores and livestock, which frequently feed in G.lutea, play a role in G. lutea flower color variation, by answering the following questions: (i) Do insect herbivores...
The Sacramento (northern Central) Valley of California (CA) has a hot Mediterranean climate and a diverse ecological landscape that is impacted extensively by human activities, which include the intensive farming of crops and livestock. Waste-water ponds, marshes, and irrigated fields associated with these agricultural activities provide abundant larval habitats for C. sonorensis midges, in add...
Arid and semi arid areas of Balochistan are characterized by low and erratic rainfall and are prone to drought conditions which normally occur every three to four years. Th e prevailing drought is one of the most severe in its magnitude as annual rain (60-150 mm) has been well below average for a continuous period of four to fi ve years in most parts of highland Balochistan. Results from a long...
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