Download or read book Modelling Nutrient Digestion and Utilisation in Farm Animals written by D. Sauvant and published by Springer Science & Business Media. This book was released on 2011-05-02 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 30 years, modelling has been an important method for integrating, in a flexible, comprehensive and widely applicable way, basic knowledge and biological concepts on digestion and metabolism in farm animals. The purpose of this book is to present the 'state of art' in this area. The chapters are written by leading teams and researchers in this field of study, mainly from Europe, North America and Australasia. Considerable progress has been made in topics dealing with: modelling methods, feeding behaviour, digestion and metabolic processes in ruminants and monogastric animals. This progress is clearly illustrated by the emergence of a new paradigm in animal nutrition, which has moved from the aim to cover the requirements of the animal to explaining and predicting the responses of the animals to diets (e.g., productivity and efficiency, impact on quality of products, environmental aspects, health and well-being). In this book several chapters illustrate that through empirical models, meta-analysis is an efficient tool to synthesize information gathered over recent decades. In addition, compared with other books on modelling farm animal nutrition, two new aspects received particular attention: expanding knowledge of the individual animal to understanding the functioning and management of herds, and the consideration of the environmental impact of animal production. This book is a valuable source of information for researchers, nutritionists, advisors, and graduate students who want to have up-to-date and concise information on mathematical modelling applied to farm animals.
Download or read book Devenir du phosphore apport sur les sols et risques de contamination des eaux de surface written by Hugues Vanden Bossche and published by . This book was released on 1999 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE ETUDE PORTE SUR LE DEVENIR DU PHOSPHORE (P) DES BOUES RESIDUAIRES DE STATION D'EPURATION EPANDUES SUR LES SURFACES AGRICOLES ET LES RISQUES DE CONTAMINATION DES EAUX DE SURFACES. LES CARACTERISTIQUES CHIMIQUES DES BOUES ET LES FORMES DU P ONT ETE DETERMINEES PAR DES ANALYSES ELEMENTAIRES EN FRX, ICP-SEA ET ICP-SM ; PAR DES EXTRACTIONS CHIMIQUES ; PAR DES INVESTIGATIONS AU MEB ET DE LA MICROANALYSE X ET PAR L'ETUDE DE LA DRX. LA MOBILITE ET LA BIO-DISPONIBILITE DU P DES BOUES ONT ETE ESTIMEES PAR L'ETUDE D'ISOTHERMES DE DESORPTION, DE LA CINETIQUE DE DILUTION ISOTOPIQUE DE 3 2P (EN CONDITIONS OXYDANTES OU REDUCTRICES) ET DES ESSAIS DE CULTURE DE POIREAUX (AVEC ET SANS MYCORHIZES). LE TRANSFERT DU P A ETE MESURE DANS LES EAUX DE RUISSELLEMENT A LA SURFACE DE PARCELLES AGRICOLES AMENDEES AVEC DES BOUES, LORS DE PLUIES NATURELLES OU SIMULEES. LES BOUES ISSUES DE STATIONS EQUIPEES D'UNE DEPHOSPHATATION BIOLOGIQUE COMPORTENT UNE FRACTION DE P TRES MOBILE, ASSIMILABLE PAR LES PLANTES. L'ADJONCTION DE SELS DE FER IMMOBILISE UNE PART DU P SOUS FORME DE PHOSPHATES DE FER, LA MOBILITE DU P EST ALORS CONTROLEE PAR LA SORPTION SUR DES OXY(-HYDRO)XYDES DE FER. L'APPARITION DE CONDITIONS REDUCTRICES A LA FAVEUR DE L'ACTIVITE BIOLOGIQUE CONCOURT A LA LIBERATION PARTIELLE DU P. LA DESHYDRATATION ET LE SECHAGE DES BOUES CONTRIBUENT A ACCROITRE LA PART IMMOBILISEE. LE CHAULAGE FAVORISE LA PRECIPITATION D'APATITE QUI REND LE P INACCESSIBLE AUX PLANTES. LES BOUES DESHYDRATEES FORMENT DES AGREGATS A LA SURFACE DU SOL. LE P EST ALORS TRANSFERE AU SOL PAR LIXIVIATION. SELON LA BOUE, LA PERTE DE P ATTEINT 25 A 60% DANS LES DEUX MOIS QUI SUIVENT L'EPANDAGE. CE PHENOMENE EST INSUFFISANT POUR AFFECTER LA QUALITE DES EAUX DE RUISSELLEMENT DONT LE P, SURTOUT PARTICULAIRE, PROVIENT DU SOL. LES BOUES LIQUIDES PROVOQUENT UNE AUGMENTATION DE LA TENEUR EN P SOLUBLE DANS L'EAU, LORS DE PLUIES INTENSES. MAIS, ELLES PRESERVENT LA STRUCTURE DE LA SURFACE DU SOL CE QUI REDUIT L'EROSION ET LES PERTES DE P TOTAL.
Download or read book Compendium of Sanitation Systems and Technologies written by Elizabeth Tilley and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tropical Plant Breeding written by A. Charrier and published by Editions Quae. This book was released on 2001 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Important advances in tropical plant breeding achieved by French research teams of Cirad, Inra and Ird, in collaboration with counterpart staff in tropical countries, are reviewed in the present publication. All 24 chapters focus on different plants, and include: in-depth analysis of trait diversity in cultivated forms and links with related wild species; overviews of breeding techniques and biotechnological innovations utilized by breeders; assessment of genetic progress, based on examples from varietal improvement and extension programmes.
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book UNESCO General History of Africa Vol I Abridged Edition written by Jacqueline Ki-Zerbo and published by Univ of California Press. This book was released on 1990 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description
Download or read book Agroclimatology written by Jerry L. Hatfield and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Can we unlock resilience to climate stress by better understanding linkages between the environment and biological systems? Agroclimatology allows us to explore how different processes determine plant response to climate and how climate drives the distribution of crops and their productivity. Editors Jerry L. Hatfield, Mannava V.K. Sivakumar, and John H. Prueger have taken a comprehensive view of agroclimatology to assist and challenge researchers in this important area of study. Major themes include: principles of energy exchange and climatology, understanding climate change and agriculture, linkages of specific biological systems to climatology, the context of pests and diseases, methods of agroclimatology, and the application of agroclimatic principles to problem-solving in agriculture.
Download or read book Basic Technics in Ecological Farming Techniques de Base en Agriculture Biologique Grunds tzliche Verfahren der kologischen Landwirtschaft Le Maintien de la Fertilit des Sols The Maintenance of Soil Fertility Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anthropology Art and Aesthetics written by Jeremy Coote and published by Oxford University Press. This book was released on 1992 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthropology of art is a fast-developing area of intellectual debate and academic study. This beautifully illustrated volume is a unique survey of the current state of anthropological thinking on art and aesthetics. The distinguished contributors draw on contemporary anthropological theory and on classic anthropological topics such as myth and ritual to deepen our understanding of particular aesthetic traditions in their socio-cultural and historical contexts. Many of the essays present new findings based on recent field research in Australia, New Guinea, Indonesia, and Mexico; while others draw on classical anthropological accounts of the Trobriand Islanders of Melanesia and the Nuer of the Southern Sudan to form new arguments and conclusions. The introductory overview of the history of the anthropology of art, by Sir Raymond Firth, makes this volume especially useful for those interested in learning what anthropology has to contribute to our understanding of art and aesthetics in general.
Download or read book Characterization Treatment and Use of Sewage Sludge written by P. L'Hermite and published by Springer. This book was released on 1981-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Second European Symposium held in Vienna, Austria, 21-23 October, 1980
Download or read book The Ecology of Even aged Forest Plantations written by International Union of Forestry Research Organizations. Division I--Site and Silviculture and published by . This book was released on 1979 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cropping Systems Land Tenure and Social Diversity in Wenchi Ghana written by Samuel Adjei-Nsiah and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, there is still considerable scope for further development of these self-organised innovations.
Download or read book African Small Ruminant Research and Development written by R. T. Wilson and published by ILRI (aka ILCA and ILRAD). This book was released on 1989-01-01 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains 44 papers and 2 abstracts from a international conference on African small ruminants research and development. eleven papers and 1 abstract deal with the importance of small ruminant production systems and economics. Another 11 describe and analyse feed resources and feeding systems and there are 6 papers on reproductive problems and their solutions. Seven papers and 1 abstract review the prevalent health problems under various management systems and present the solutions to these production constraints. The last 9 papers deal with breeds, breeding systems and breed improvement.
Download or read book Bananas and Food Security written by Claudine Picq and published by Bioversity International. This book was released on 1999 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: Importance de la banane sur les plans economique et alimentaire; Diversite et dynamique des filieres; Organisation des marches et commercialisation; Systemes de productions/production systems.
Download or read book Cosmos and Society in Oceania written by Daniel de Coppet and published by Taylor & Francis. This book was released on 2024-11-01 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current anthropology uses expressions such as 'society as a whole', 'socio-cosmic relations', 'spatiotemporal extension', 'global ideology', and 'cosmomorphy' to establish that the clear-cut Western dichotomy between society and cosmos is not always to be found in the communities it studies. In fact, many elements that the West would at first undoubtedly classify as belonging either to the cosmos or to the society appear very often in Melanesia as belonging to neither one of these domains, but to a realm which combines the attributes of both. Focusing on different examples drawn from diverse Melanesian societies, this thought-provoking volume by eminent specialists re-examines the relationship between society and cosmos and, in the process, opens new directions for research.
Download or read book Ecology of Fresh Waters written by Brian R. Moss and published by John Wiley & Sons. This book was released on 2009-07-15 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: This established textbook continues to provide a comprehensive andstimulating introduction to rivers, lakes and wetlands, and waswritten as the basis for a complete course on freshwater ecology.Designed for undergraduate and early postgraduate students who wishto gain an overall view of this vast subject area, this accessibleguide to freshwater ecosystems and man's activities will also beinvaluable to anyone interested in the integrated management offreshwaters. The author maintains the tradition of clarity andconciseness set by previous editions, and the text is extensivelyillustrated with photographs and diagrams. Examples are drawn fromthe author's experience in many parts of the world. In this edition, the scientific content of the text has beenfully revised and updated. Emphasis has been placed on humanimpacts, and a completely new chapter has been added on the futureof freshwaters. Balanced and stimulating introduction to limnology. Successfully combines fundamental and applied aspects ofintegrated management of freshwaters, with strong emphasis on humanlinks. Completely revised and rewritten with a threefold increase inthe number of illustrations. New chapter on the future of freshwaters. Of interest to undergraduates, beginning postgraduates and anylimnologically interested reader.
Download or read book Forest Decline and Atmospheric Deposition Effects in the French Mountains written by M. Kaennel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest decline became a matter of public and scientific concern in France in 1983 when conifers in the Vosges mountains were found to exhibit unusual crown deterioration. An impassioned controversy on a supposedly large scale forest health problem was then in full swing in Central Europe. A co-ordinated research programme entitled DEFORPA ("Deperissement des For~ts et Pollution AtmospMrique") was launched in 1984. This programme ran from 1984 to 1991 and a number of projects are still in progress. The Programme was sponsored by three French ministries (Enviroument, Agriculture and Forestry, Research and Technologyl), several state agencies, various regional authorities and the Commission of the European Communities (DO xn and DG VI). Initially, emphasis was solely laid on the understanding of forest decline in the mountainous areas - because damage was most obvious there - in relation to natural and man-made factors. Air pollution was given high but not overwhelming priority. Thus, the DEFORPA Programme was not in its essence a nation-wide assessment of air pollution effects, unlike a number of national acidification research programmes in Europe and North America. During. the programme, however, the areas of concern expanded. In particular, research into water acidification in the Vosges mountains was developed in parallel with the DEFORPA Programme, and possible eutrophication of the ground flora in northeastern France became the subject of new research.
