Regulation Et Prevision De Lingestion Des Chevres Laitieres Au Paturage

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Régulation et prévision de l'ingestion des chèvres laitières au pâturage

Author : Alexia Charpentier
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Régulation et prévision de l'ingestion des chèvres laitières au pâturage by : Alexia Charpentier

Download or read book Régulation et prévision de l'ingestion des chèvres laitières au pâturage written by Alexia Charpentier and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans un contexte de fluctuation des prix des intrants et d'une demande croissante en produits à base de lait de chèvre issus de pratiques respectueuses de l'environnement et des animaux, le pâturage peut retrouver une place plus importante dans l'alimentation des chèvres laitières. D'après la synthèse bibliographique, les facteurs de variation de l'ingestion et des performances au pâturage ont été très peu étudiés chez les chèvres laitières en conditions tempérées. L'objectif de la thèse a été de comprendre quelle est l'influence des pratiques de gestion du pâturage (disponibilité en herbe et en temps pour pâturer) sur la régulation de l'ingestion et les performances des chèvres laitières, dans le but d'affiner les recommandations aux éleveurs et d'élaborer les bases d'un modèle de prévision de l'ingestion. D'après les 6 essais réalisés : (1) les chèvres recevant entre 0,6 et 1,0 kg/j de compléments s'adaptent à des restrictions de temps d'accès de 11 à 6 h/j, en augmentant leur vitesse d'ingestion et surtout le pourcentage du temps passé à pâturer jusqu'à 95 % du temps d'accès, (2) les chèvres recevant 0,6 kg de concentrés et un temps d'accès d'au moins 11 h/j peuvent s'adapter à une restriction de quantité d'herbe offerte jusqu'à 2,3-2,6 kg MS/chèvre/j, (3), le poids vif et la production laitière sont des paramètres déterminant de la quantité d'herbe ingérée alors que la parité et le stade de lactation n'ont pas montré d'effet significatif. Ce travail a permis d'établir les premières lois de réponse d'ingestion, de production laitière et d'adaptation comportementale des chèvres laitières à des variations de temps d'accès et de quantité d'herbe offerte au pâturage.

Validation par mesures à l'auge des méthodes d'estimation de l'ingestion des régimes à base d'herbe chez la chèvre laitière

Author : Nina Belarbre
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Validation par mesures à l'auge des méthodes d'estimation de l'ingestion des régimes à base d'herbe chez la chèvre laitière by : Nina Belarbre

Download or read book Validation par mesures à l'auge des méthodes d'estimation de l'ingestion des régimes à base d'herbe chez la chèvre laitière written by Nina Belarbre and published by . This book was released on 2017 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le renouveau de l'intérêt pour le pâturage des chèvres laitières s'accompagne d'interrogations concernant l'ingestion d'herbe. Deux méthodes d'estimation de l'ingestion, Alcanes et Ytterbium, sont étudiées lors de six essais à l'auge sur six chèvres en box de digestibilité. L'objectif de ces essais est de valider les méthodes d'estimation de l'ingestion de l'herbe chez la chèvre laitière en vue de leur application au pâturage. Quatre facteurs de variations de l'ingestion sont testés : l'apport de concentré, l'apport de luzerne déshydratée, le niveau d'alimentation et l'âge de repousse de l'herbe. La méthode des alcanes prédit bien les variations relatives d'ingestion entre traitements. Par contre, les valeurs absolues ne sont bien estimées que dans 50 % des essais, en raison de différences de récupérations fécales entre les alcanes interne et externe. La méthode ytterbium estime correctement les valeurs absolues et les variations relatives d'ingestion, d'excrétion et de digestibilité pour tous les effets étudiés sauf pour l'effet de l'apport de luzerne déshydratée. Dans ce cas, c'est l'équation de prévision de la digestibilité qui n'est pas assez précise. En conclusion, la méthode ytterbium est la meilleure des deux méthodes pour estimer l'ingestion des chèvres laitières sur des régimes à base d'herbe, à condition de préciser l'équation de digestibilité avant son application au pâturage.

New trends for innovation in the Mediterranean animal production

Author : R. Bouche
Publisher : Springer Science & Business Media
ISBN 13 : 908686726X
Total Pages : 329 pages
Book Rating : 4.0/5 (868 download)

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Book Synopsis New trends for innovation in the Mediterranean animal production by : R. Bouche

Download or read book New trends for innovation in the Mediterranean animal production written by R. Bouche and published by Springer Science & Business Media. This book was released on 2012-03-26 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Dromadaires et chameaux, animaux laitiers

Author : Pascal Bonnet
Publisher : Editions Quae
ISBN 13 : 2876143070
Total Pages : 318 pages
Book Rating : 4.8/5 (761 download)

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Book Synopsis Dromadaires et chameaux, animaux laitiers by : Pascal Bonnet

Download or read book Dromadaires et chameaux, animaux laitiers written by Pascal Bonnet and published by Editions Quae. This book was released on 1998 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Prediction and Improved Estimation in Linear Models

Author : John Bibby
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Prediction and Improved Estimation in Linear Models by : John Bibby

Download or read book Prediction and Improved Estimation in Linear Models written by John Bibby and published by John Wiley & Sons. This book was released on 1977 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.

Dairy Goats Feeding and Nutrition

Author : Antonello Cannas
Publisher : CABI
ISBN 13 : 1845933486
Total Pages : 307 pages
Book Rating : 4.8/5 (459 download)

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Book Synopsis Dairy Goats Feeding and Nutrition by : Antonello Cannas

Download or read book Dairy Goats Feeding and Nutrition written by Antonello Cannas and published by CABI. This book was released on 2008 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dairy goats have long been considered an important source of income for rural populations, providing the opportunity for profitable and sustainable diversity for small farms. Their importance is also increasing in intensive feeding systems and in large farms. They are highly adaptable due to their unique feeding habits and have become popular livestock animals in a range of environments, from temperate grasslands to subtropical, semi-arid and mountainous areas. Moreover, goat milk products are finding a growing acceptance in the world market and research has increased in feeding strategies for improved productivity and quality. Examining all aspects of dairy goat feeding and nutrition, this book represents a long awaited review of recent scientific research and updated techniques. Chapters discuss aspects such as the modelling and production of goat's milk as well as the estimation of nutrient requirements and food intake of goats.

Livestock Policy Analysis

Author : International Livestock Research Institute
Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 : 9789291460038
Total Pages : 268 pages
Book Rating : 4.4/5 (6 download)

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Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute

Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.

Dairy Sheep Nutrition

Author : Giuseppe Pulina
Publisher : Cabi
ISBN 13 : 9780851996813
Total Pages : 222 pages
Book Rating : 4.9/5 (968 download)

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Book Synopsis Dairy Sheep Nutrition by : Giuseppe Pulina

Download or read book Dairy Sheep Nutrition written by Giuseppe Pulina and published by Cabi. This book was released on 2004 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an essential guide to all aspects of dairy sheep nutrition including milk production, protein, energy, mineral and vitamin nutrition, feed intake, nutrition and milk quality, grazing and stocking rate management and nutrition and milk quality. Originally published in Italian in 2001 this book will be the only text in English to cover this growing subject.

Grazing and Conservation Management

Author : Michiel F. WallisDe Vries
Publisher : Springer Science & Business Media
ISBN 13 : 9401143919
Total Pages : 402 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Grazing and Conservation Management by : Michiel F. WallisDe Vries

Download or read book Grazing and Conservation Management written by Michiel F. WallisDe Vries and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grazing animals enjoy an ambiguous reputation in the field of nature conservation. Livestock are often treated as a scourge, yet native large herbivores form the prime attraction of many a reserve. This book gives the first comprehensive overview of the use of grazing as a tool in conservation management. Considering in turn the ecological and historical background, the impact of grazing on community structure, management applications and future prospects, this book examines issues such as the role of herbivores as keystone species, the assessment of habitat quality and the function of scientific models in advancing grazing management. Large herbivores are shown to be potentially powerful allies in the management of nature reserves, particularly in the maintenance, enhancement or restoration of biodiversity. Grazing and Conservation Management will appeal to conservation biologists and rangeland managers, providing them with a clearer understanding of grazing and conservation management.

Sheep and Goat Production

Author : I. E. Coop
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Sheep and Goat Production by : I. E. Coop

Download or read book Sheep and Goat Production written by I. E. Coop and published by Elsevier Science & Technology. This book was released on 1982 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecology and distribution; Breeding; Reproduction; Maintenance and growth; Pregnancy; Lactation of suckling ewes and does; Nutritional diseases; Infectious diseases of sheep and goats; Internal parasites of sheep and goats; External parasites of sheep and goats; Growth and characteristics of wool and hair; Wiik grading and marketing; Livestock and meat marketing and grading; Carcase and meat qualities; Milk production in sheep and goats; Systems, biological and economic efficiencies; Very extensive systems; Extensive grazing systems; Intensive grassland systems; Intensive arable systems; Very intensive systems; Government controlled systems; Migratory (Transhumance) systems; Nomadic systems; Village and smallholder systems; List of contributors.

Saints of the Atlas

Author : Ernest Gellner
Publisher : ACLS History E-Book Project
ISBN 13 : 9781597404631
Total Pages : 0 pages
Book Rating : 4.4/5 (46 download)

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Book Synopsis Saints of the Atlas by : Ernest Gellner

Download or read book Saints of the Atlas written by Ernest Gellner and published by ACLS History E-Book Project. This book was released on 2008-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Role of Phosphorus in Eutrophication

Author : Alfred Frank Bartsch
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Role of Phosphorus in Eutrophication by : Alfred Frank Bartsch

Download or read book Role of Phosphorus in Eutrophication written by Alfred Frank Bartsch and published by . This book was released on 1972 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agricultural English

Author : Georgeta Raţă
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1443839612
Total Pages : 385 pages
Book Rating : 4.4/5 (438 download)

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Book Synopsis Agricultural English by : Georgeta Raţă

Download or read book Agricultural English written by Georgeta Raţă and published by Cambridge Scholars Publishing. This book was released on 2012-04-25 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural English is a collection of essays on the English of Agriculture. The approach is a linguistic one: the different aspects of the English used in the field of agriculture (agricultural practices, agricultural systems) and in some fields related to agriculture (agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, zoology) are analysed from a morphological (combination, derivation), syntactical (nominal phrases, verbal phrases), lexical and lexicographical, semantic (homonymy, semantic fields, synonymy, terminology), pragmatic (academic discourse, idiom, metaphor), etymological (etymon, Latin heritage), and contrastive (English–Croatian, English–French, English–German, English–Romanian, Romanian–English) points of view. The book will appeal to agriculturists, animal breeders, professors, researchers, students, and translators from Croatian-, English-, French-, German-, and Romanian-speaking countries, active in their own countries or abroad. The types of academic readership it would appeal to include academic teaching staff, researchers and students in the fields of agriculture and related fields – agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, and zoology.

One Health, 2nd Edition

Author : Jakob Zinsstag
Publisher : CABI
ISBN 13 : 1789242576
Total Pages : 459 pages
Book Rating : 4.7/5 (892 download)

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Book Synopsis One Health, 2nd Edition by : Jakob Zinsstag

Download or read book One Health, 2nd Edition written by Jakob Zinsstag and published by CABI. This book was released on 2020-09-30 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: One Health, the concept of combined veterinary and human health, has now expanded beyond emerging infectious diseases and zoonoses to incorporate a wider suite of health issues. Retaining its interdisciplinary focus which combines theory with practice, this new edition illustrates the contribution of One Health collaborations to real-world issues such as sanitation, economics, food security and vaccination programmes. It includes more non-infectious disease issues and climate change discussion alongside revised case studies and expanded methodology chapters to draw out implications for practice. Promoting an action-based, solutions-oriented approach, One Health: The Theory and Practice of Integrated Health Approaches highlights the lessons learned for both human and animal health professionals and students.

Philostratus

Author : Philostratus (the Athenian)
Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Philostratus by : Philostratus (the Athenian)

Download or read book Philostratus written by Philostratus (the Athenian) and published by . This book was released on 1912 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agroecology and Strategies for Climate Change

Author : Eric Lichtfouse
Publisher : Springer Science & Business Media
ISBN 13 : 9400719051
Total Pages : 334 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Agroecology and Strategies for Climate Change by : Eric Lichtfouse

Download or read book Agroecology and Strategies for Climate Change written by Eric Lichtfouse and published by Springer Science & Business Media. This book was released on 2011-09-30 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable agriculture is a rapidly growing field aiming at producing food and energy in a sustainable way for our children. This discipline addresses current issues such as climate change, increasing food and fuel prices, starvation, obesity, water pollution, soil erosion, fertility loss, pest control and biodiversity depletion. Novel solutions are proposed based on integrated knowledge from agronomy, soil science, molecular biology, chemistry, toxicology, ecology, economy, philosophy and social sciences. As actual society issues are now intertwined, sustainable agriculture will bring solutions to build a safer world. This book series analyzes current agricultural issues and proposes alternative solutions, consequently helping all scientists, decision-makers, professors, farmers and politicians wishing to build safe agriculture, energy and food systems for future generations.

Sociology, Organic Farming, Climate Change and Soil Science

Author : Eric Lichtfouse
Publisher : Springer Science & Business Media
ISBN 13 : 9048133335
Total Pages : 478 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Sociology, Organic Farming, Climate Change and Soil Science by : Eric Lichtfouse

Download or read book Sociology, Organic Farming, Climate Change and Soil Science written by Eric Lichtfouse and published by Springer Science & Business Media. This book was released on 2009-12-01 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable agriculture is a rapidly growing field aiming at producing food and energy in a sustainable way for humans and their children. Sustainable agriculture is a discipline that addresses current issues such as climate change, increasing food and fuel prices, poor-nation starvation, rich-nation obesity, water pollution, soil erosion, fertility loss, pest control, and biodiversity depletion. Novel, environmentally-friendly solutions are proposed based on integrated knowledge from sciences as diverse as agronomy, soil science, molecular biology, chemistry, toxicology, ecology, economy, and social sciences. Indeed, sustainable agriculture decipher mechanisms of processes that occur from the molecular level to the farming system to the global level at time scales ranging from seconds to centuries. For that, scientists use the system approach that involves studying components and interactions of a whole system to address scientific, economic and social issues. In that respect, sustainable agriculture is not a classical, narrow science. Instead of solving problems using the classical painkiller approach that treats only negative impacts, sustainable agriculture treats problem sources. Because most actual society issues are now intertwined, global, and fast-developing, sustainable agriculture will bring solutions to build a safer world. This book series gathers review articles that analyze current agricultural issues and knowledge, then propose alternative solutions. It will therefore help all scientists, decision-makers, professors, farmers and politicians who wish to build a safe agriculture, energy and food system for future generations.