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Author: E.F. Thomson Publisher: Springer Science & Business Media ISBN: 9400913176 Category : Medical Languages : en Pages : 287
Book Description
Proceedings of a workshop held at the International Center for Agricultural Research in the Dry Areas, Aleppo, Syria, November 30 to December 3, 1987
Author: E.F. Thomson Publisher: Springer Science & Business Media ISBN: 9400913176 Category : Medical Languages : en Pages : 287
Book Description
Proceedings of a workshop held at the International Center for Agricultural Research in the Dry Areas, Aleppo, Syria, November 30 to December 3, 1987
Author: Winrock International Livestock Research and Training Center Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 144
Book Description
The objectives of this study are to assess the role of small ruminants (sheep and goats) in the food production systems of developing countries, examine their advantages and disadvantages, analyze the constraints limiting their further contribution to the welfare of small farm/low income rural producers, prescribe measures for overcoming these constraints, and make recommendations related to potential donor involvement in support of the development of sheep and goat production. Small ruminants are viewed as an integral, but not dominant component of complex agricultural systems. Particular emphasis is placed on sheep and goats in mixed herds grazing dry rangelands and in small mixed farm systems in medium to high rainfall areas. An analysis of major constraints -- ecological, biological, policy, and socio-economic -- leads to recommendations on the need for a balanced production system approach for research, training and development programs, and for a combination of support activities such as herd health programs, and formulation of favorable credit, marketing and pricing policies for small ruminants and their products.
Author: R. Bouche Publisher: Springer Science & Business Media ISBN: 908686726X Category : Science Languages : en Pages : 329
Book Description
The Mediterranean area shows a great diversity of livestock systems, depending on local resources and traditions, but also on the networking space where informational resources are available for producers. During the last decades, a lot of innovations have been conceived or introduced in the Mediterranean area, allowing livestock systems to remain competitive. The book looks at two main issues: firstly, it gives an updated review on the main innovations that significantly changed the activities of livestock production in the Mediterranean area in the recent past. Secondly, the focus lies on the extent to which these innovations improve the efficiency, ensure the socio-cultural basis or reduce the environmental impact of livestock systems. One major finding is a new vision of innovating systems based on the distinction between regulated innovation (when aims are fixed) and innovative design (when aims are questioned). Innovations reported in the book are dealing with a set of concerns. They concern the production techniques, the work organization, the equipment and infrastructures, the collective features for selection, reproduction, feeding or sanitary devices. They also concern the local organization such as product labelling, new dynamics around local breeds, collective rules for supply basin or approaches of new products for new markets. More recently, some innovations focus on environmental impacts of livestock production, due to an increasing consciousness of those kinds of problems. In the final part of the book, a round table copes with a crucial question: are traditions in Mediterranean livestock activities to be considered an obstacle or a source of innovation? This book provides a set of updated information and knowledge useful for researchers, students, extension services and policy-makers in the field of animal science.
Author: P.M.A Tigerstedt Publisher: Springer Science & Business Media ISBN: 9401588066 Category : Science Languages : en Pages : 299
Book Description
Plant adaptation is a fundamental process in plant breeding. It was the first criterion in the initial domestication of plants thousands of years ago. Adaptedness is generally a quantitative complex feature of the plant, involving many traits, many of which are quantitative. Adaptation to stresses like cold, drought or diseases are among the most central problems in a world grappling with global food security. Modern plant breeding, based on mendelian genetics, has made plant improvement more effective and more precise and selective. Molecular genetics and genetic engineering has considerably increased this selectivity down to single genes affecting single traits. The time has come when plant breeding efficiency may cause loss of genetic resources and adaptation. In these proceedings an effort is made to merge modern plant breeding efficiency with ecological aspects of plant breeding, reflected in adaptation. It is hoped that this merger results in more sustainable use of genetic resources and physical environments. The book is based on 10 keynotes addressing a wide spectrum of themes related to adaptation. In addition each subject is further elaborated in up to three case studies on particular plant species or groups of plants. The keynotes do in fact overlap to some degree and there are articles in this volume that seemingly contradict each other, a common aspect in advanced fields of research. The keen reader may conclude that, in a world where climates and environments are under continuous change and where human society is more and more polarized into a developed and a developing part, adaptation of our cultivated plants has different constraints on yields depending on ecology, and indeed economy.
Author: M.A.K. Khalil Publisher: Springer Science & Business Media ISBN: 364284605X Category : Science Languages : en Pages : 570
Book Description
Methane plays many important roles in the earth's environment. It is a potent "greenhouse gas" that warms the earth; controls the oxidizing capacity of the atmosphere (OH) indirectly affecting the cycles and abundances of many atmospheric trace gases; provides water vapor to the stratosphere; scavenges chlorine atoms from the stratosphere, terminating the catalytic ozone destruction by chlorine atoms, including the chlorine released from the man-made chlorofluorocarbons; produces ozone, CO, and CO2 in the troposphere; and it is an index of life on earth and so is present in greater quantities during warm interglacial epochs and dwindles to low levels during the cold of ice ages. By all measures, methane is the second only to CO2 in causing future global warming. The book presents a comprehensive account of the current understanding of atmospheric methane, and it is an end point for summarizing more than a decade of intensive research on the global sources, sinks, concentrations, and environmental role of methane.
Author: Peter Oram Publisher: World Bank Publications ISBN: 9780821334331 Category : Technology & Engineering Languages : en Pages : 196
Book Description
This report describes the results of a survey of 1,000 multinational corporations undertaken in 1992 which asked about the importance of environmental issues in investment decisions. The survey shows that most large corporations look systematically at environmental questions when they decide where to invest. Environmental problems appear to have discouraged a number of investments across different industries and the question of liability for past pollution problems at industrial sites was the greatest concern for investors.
Author: E.F. Thomson
Author: E.F. Thomson
Author: E. F. Thomson
Author: Winrock International Livestock Research and Training Center
Author: National Library of Medicine (U.S.)
Author: R. Bouche
Author: 
Author: Hendrickx, S.C.J.
Author: P.M.A Tigerstedt
Author: M.A.K. Khalil
Author: Peter Oram