A Theory of Feeding and Growth of Animals

Readers of John Parks' book will be left in no doubt that his theory of the feeding and growth of animals meets both of the above criteria.

Author: John R. Parks

Publisher: Springer Science & Business Media

ISBN: 9783642683305

Category: Technology & Engineering

Page: 324

View: 850

Download →

Geoffrey R. Dolby, PhD One of the principal characteristics of a scientific theory is that it be falsifiable. It must contain predictions about the real world which can be put to experimental test. Another very important characteristic of a good theory is that it should take full cognisance of the literature of the discipline in which it is embedded, and that it should be able to explain, at least as well as its competitors, those experimental results which workers in the discipline accept without dispute. Readers of John Parks' book will be left in no doubt that his theory of the feed ing and growth of animals meets both of the above criteria. The author's knowl edge of the literature of animal science and the seriousness of his attempt to incor porate the results of much previous work into the framework of the present theory result in a rich and imaginative integration of diverse material concerned with the growth and feeding of animals through time, a theory which is made more precise through the judicious use of mathematics. The presentation is such that the key concepts are introduced gradually and readers not accustomed to a mathematical treatment will find that they can appreciate the ideas without undue trauma. The key concepts are clearly illustrated by means of a generous set of figures. The crux of the theory comprises three differential Eqs. (7. 1-7.
Posted in:

Resource Allocation Theory Applied to Farm Animal Production

Brody, S. and Procter, R.C. (1932) Growth and development XXIII. ... Proceedings of the 3rd World Congress on Genetics Applied to Livestock Production. IX. ... Parks, J.R. (1982) A Theory of Feeding and Growth of Animals, 1st edn.

Author: Wendy M. Rauw

Publisher: CABI

ISBN: 9781845933944

Category: Medical

Page: 335

View: 995

Download →

This book is about resource allocation matters with the aim to further development thoughts and models on resource allocation applied to livestock production. It contains 18 chapters divided into 4 parts which discuss resources and resource allocation patterns, trade-offs, metabolic constraints to resource allocation and the process of homeorhesis with a special emphasis to homeorhesis during heat stress; the relationship between food intake and resources allocated to body maintenance, growth, reproduction and the immune response; the consequences of high production efficiency in pigs, poultry and dairy cattle and the consequences of improved production by means of biological engineering and options to include resource allocation matters in the breeding objective, animal welfare and in resource allocation modelling.
Posted in:

Precision livestock farming

The mean relative error (MRE) between the previously target growth trajectories and the realized growth trajectories ranged from 3.7% up to 5.3%. ... A theory of feeding and growth of animals., Springer-Verlag, Berlin.

Author: Sidney Cox

Publisher: Wageningen Academic Publishers

ISBN: 9789086865154

Category: Livestock systems

Page: 184

View: 425

Download →

Precision Livestock presents the latest scientific results from worldwide research, field studies and practical application. The book contains peer-reviewed papers that were presented at the 1st European Conference on Precision Livestock Farming. The papers focus on physiological identification and monitoring of animals, on farm and in transit, and on the operation of automatic milking systems. Major objectives are secure methods of animal identification for traceability; animal welfare and hygiene. The economic and health effects of implementing precision livestock husbandry are featured in many of them. This first conference was held in parallel with the 4th European Conference on Precision Agriculture - the links between both technologies were drawn and the possible interactions between them were shown for the first time. The potential is to integrate both technologies to encompass the whole farm. Peer-reviewed papers from the Precision Agriculture conference are presented in a companion proceedings, Precision Agriculture.
Posted in:

The Weaner Pig

NRC ( 1987 ) Predicting Feed Intake of Food - producing Animals . ... Parks , J.R. ( 1982 ) A Theory of Feeding and Growth in Animals . ... Rerat , A. ( 1972 ) Protein nutrition and metabolism in the growing pig .

Author: M. A. Varley

Publisher: CABI

ISBN: 0851998887

Category: Technology & Engineering

Page: 352

View: 264

Download →

This book is developed from a British Society of Animal Science occasional meeting, held in September 2000. It brings together all of the scientific disciplines involved in the pre- and post-weaning biology of the piglet, concentrating on growth/development, nutrition, immunology/health, ethology and the physical environment.
Posted in:

Mechanistic Modelling in Pig and Poultry Production

Kyriazakis, I. and Emmans, G.C. (1995) The voluntary feed intake of pigs given feeds based on wheatbran, ... Basic Principles and Implications for Animal Welfare. ... Parks, J.R. (1982) A Theory of Feeding and Growth of Animals.

Author: R. Gous

Publisher: CABI

ISBN: 9781845930707

Category: Medical

Page: 331

View: 146

Download →

These proceedings contain 15 papers on the recent advances in pig and poultry mechanistic modelling. Notable among the papers is the consideration of new components of the animal production process, such as social stressors and disease. Understanding of some new systems such as the physiological control of egg production in hens by modelling is the given focus in one paper. The topics covered in the other papers include the following: introduction to modelling in the animal sciences, different approaches to modelling animal systems; basic concepts describing animal growth and feed intake; modelling populations for purposes of optimization; advancements in empirical models for prediction and prescription; nutrient flow models, energy transactions and energy feed systems; evaluation of animal genotypes through model inversion; considerations for representing microenvironmental conditions in simulation models for broiler chickens; use of physiological models to define environmental control strategies; comparison of pig growth models from the genetic point of view; model of metabolism in the sow; and place of models in the new technologies of production systems.
Posted in:

Fats in Animal Nutrition

The influence of dietary energy and amino acid levels on abdominal fat pad development of the broiler chicken. Poultry Science 60, 151–159 MARCH, ... A Theory of Feeding and Growth of Animals. Advanced Series in Agricultural Sciences, ...

Author: J. Wiseman

Publisher: Elsevier

ISBN: 9781483100357

Category: Technology & Engineering

Page: 536

View: 251

Download →

Fats in Animal Nutrition provides a useful text containing information from many diverse disciplines that discuss the nutritional utilization of lipids of domesticated animals. The book is divided into seven parts. Part I covers the chemistry and biochemistry of animal and plant fats and their nutritional importance; Part II discusses the general principles involved in the transport and absorption of fats and how this process is facilitated in ruminant and non-ruminant animals. The book also deals with the role of essential fats in the nutrition of different animals, as well as the protective functions of fat-soluble vitamins . Part IV discusses the use of fats as an energy source for animals; Part V deals with the inclusion of fats in animal feeds and their uses. The deposition of fat in different meats and the practical applications of fat utilization in animals are covered as well. The text is recommended for agriculturists, veterinarians, and zoologists who would like to know more about the importance of the inclusion of fats in animal diets.
Posted in:

Mathematical Modelling in Animal Nutrition

Papajcsik, I.A. and Bodero, J. (1988) Modelling lactation curves of Friesian cows in a sub-tropical climate. Animal Production 47, 201–207. Parks, J.R. (1982) A Theory of Feeding and Growth of Animals. Springer-Verlag, Berlin.

Author: J. France

Publisher: CABI

ISBN: 9781845933548

Category: Technology & Engineering

Page: 574

View: 609

Download →

The primary purpose of each of the subsequent chapters of this book is to promulgate quantitative approaches concerned with elucidating mechanisms in a particular area of the nutrition of ruminants, pigs, poultry, fish or pets. Given the diverse scientific backgrounds of the contributors of each chapter (the chapters in the book are arranged according to subject area), the imposition of a rigid format for presenting mathematical material has been eschewed, though basic mathematical conventions are adhered to.
Posted in:

Nutrient Digestion and Utilization in Farm Animals

Parks, J.R. (1982) A Theory of Feeding and Growth of Animals. Springer-Verlag, Berlin. Petzold, L.R. (1983) Automatic selection of methods for solving stiff and nonstiff systems of ordinary differential equations.

Author: E. Kebreab

Publisher: CABI

ISBN: 9781845930059

Category: Technology & Engineering

Page: 447

View: 369

Download →

This book contains 34 chapters on nutrition physiology and presents scientific research in modelling nutrient digestion and utilization in domestic animals, including cattle, sheep, pigs, poultry and fishes. It is divided into 6 parts that cover fermentation, absorption and passage; growth and development; mineral metabolism; methodology and model development; environmental impacts and animal production and feed evaluation models. Deterministic, stochastic, empirical and mechanistic modelling approaches are also described. This book will be of significant interest to researchers and students of animal science, especially those concerned with nutrition modelling.
Posted in:

Biology of Domestic Animals

A Theory of Feeding and Growth in Animals. Springer-Verlag, New York. Perrin, N., and R.M. Sibly. 1993. Dynamic models of energy allocation and investment. Annu. Rev. Ecol. Syst. 24: 379–410. Popova, N.K., N.N. Voitenko, A.V. Kulikov, ...

Author: Colin G. Scanes

Publisher: CRC Press

ISBN: 9781498747875

Category: Nature

Page: 370

View: 180

Download →

There is increasing interest in the biology of domestic animals ranging from genomics, transcriptomics, metabolomics, nutritional physiology, and systems biology. This book touches on all of these, with a particular focus on topics such as domestic animals as comparative models to humans, molecular regulation of growth, metabolic efficiency, reproduction, and the impact of stress on growth and development. The book concludes with a discussion on the current and future directions for researchers.
Posted in:

Total Nutrition

Following the success of Nutricines, the author considers the practical implications and implementation of the theories laid out therein.

Author: Clifford A. Adams

Publisher: Iowa State Press

ISBN: WISC:89084131903

Category: Business & Economics

Page: 244

View: 691

Download →

Following the success of Nutricines, the author considers the practical implications and implementation of the theories laid out therein. The strategic use of a wide variety of disease avoidance and health maintenance measures will contribute the an improved and more acceptable system of animal production without the use of antibiotic growth promoters.
Posted in:

Hormonal Regulation of Farm Animal Growth

Thus , the development of fatness in animals and obesity in humans is due to the evolutionary advantages of excess food ... the ventromedial hypothalamus ( VMH ) and the lateral hypothalamus ( LH ) , regulate feeding and satiety .

Author: K. L. Hossner

Publisher: CABI

ISBN: 1845930908

Category: Medical

Page: 223

View: 316

Download →

This book describes the cellular and molecular mechanisms that control farm animal growth, includingdevelopment and body composition. The emphasis is on circulating hormones, local growth factors andgene transcription factors which regulate growth and differentiation of skeletal muscle, bone andadipose tissue. Overall, this book will be an important resource for students that have a limitedbackground in cell, molecular and developmental biology and the effect of endocrine and growthfactors on the growth process.
Posted in:

Boophilus microplus

Theory. of. Feeding. and. Growth. of. Animals. 1982. 123 figures. XVI, 322 pages. (Advanced Series in Agricultural ... Growth Response to Controlled Feeding. – The Theory. - A General Euclidean Vector Representation of Mixtures.

Author: J.L. Nunez

Publisher: Springer Science & Business Media

ISBN: 9783642702563

Category: Science

Page: 204

View: 714

Download →

A detailed tracing, from acceptable sources, of archaeological and paleontologi cal discoveries made up to the present time leads us to suppose that approximate ly in 8000 y B. C., in Southern Turkestan, man succeeded in domesticating the first cattle, which he later took with him as he migrated from this remote region of Central Asia. Step by step, Europe and Asia have been gradually inhabited by domesticated cattle which have been incorporated into man's economy, both as a source of food and work. The same happened in America and Australasia, continents where cattle were taken by the European colonizing groups during the course of the 16th to the 18th centuries. Possibly the common cattle tick also reached these continents at the same time, accompanying its most frequent host. The cattle tick, Boophilus microplus, parasitizes Asiatic cattle races (with spe cial reference to the zebu, Bos indicus), but generally the level of infestation is not high, only a few engorged females being detected, generally no more than ten. When cattle of European races are infested by Boophilus microplus, how ever, the level of parasitism is higher, sometimes reaching limits incompatible with the life of the host.
Posted in:

Animal Growth Regulation

... feeding in ruminant animals. The glucostatic theory of food intake control will be discussed later. 2.2. Growing Animals In growing animals where there is a high demand for nutrients for tissue deposition, food intake is increased.

Author: Dennis R. Campion

Publisher: Springer Science & Business Media

ISBN: 9781468488722

Category: Science

Page: 424

View: 174

Download →

The biotechnological advances of recent years have put us on the brink of unprecedented gains in animal productivity. Manipulation of animal growth rate and composition of gain is now possible by a variety of techniques. Ex amples include ingestion of beta-adrenergic agonists, injection of somatotropin, castration, immunization, and gene insertion. Animal Growth Regulation ad dresses modem concepts of growth regulation with an emphasis on agricul turally important animals. This emphasis is not exclusive, as many situations exist in which the only information available was generated in other species, and this information has been included for the sake of clarity and completeness. However, because of the overall orientation of this volume, particular attention has been given to the regulation of skeletal muscle, adipose tissue, and bone growth. Certain hormones and growth factors have a profound influence on growth regulation and this basic physiological knowledge is being harnessed to maniplilate growth. Thus, considerable emphasis has been given to growth hor mone-somatomedinlinsulinlike growth factor regulation of cell and tissue growth. The involvement of peptides coded by protooncogenes and of negative growth regulators, such as transforming growth factor-l3, represents an emerging area of molecular biology wherein basic knowledge offers potential exploitation for growth manipulation. Opportunities also exist for regulation of protein turn over, especially from the standpoint of protein degradation. Therefore, a place was reserved for these topics in order to provide relevant basic knowledge.
Posted in:

International Sheep and Wool Handbook

In fact, females can account for as much as 72% of total feed costs in a sheep meat enterprise (Large, 1976). Furthermore, simple theories of feeding and growth predict that the larger type of animal is no more efficient at producing ...

Author: D. J. Cottle

Publisher: Nottingham University Press

ISBN: 9781904761860

Category: Business & Economics

Page: 450

View: 136

Download →

Covering a broad range of topics relevant to the sheep and wool industry, this newly expanded edition—containing 11 new chapters and a more international scope—discusses future developments in all areas and provides an in-depth review of the meat aspects of the market. Separated into five distinct sections, the comprehensive survey summarizes the major world sheep and wool industries, biological principles, management, production systems, and the preparation, processing, and marketing of meat and wool. References and web links at the end of each chapter present further sources of information. From paddock to plate and farm to fabric, this overview is a must-have for all those involved in the trade, including producers, brokers, exporters, and processors.
Posted in:

Modelling Nutrient Utilization in Farm Animals

Overseas Development Institute , London , pp . ... Dean , W.R.J. and Macdonald , I.A.W. ( 1994 ) Historical changes in stocking rates of domestic livestock as a ... Parks , J.R. ( 1982 ) A Theory of Feeding and Growth of Animals .

Author: J. P. McNamara

Publisher: CABI

ISBN: 0851999379

Category: Technology & Engineering

Page: 418

View: 712

Download →

This book describes current research in modelling nutrient use in farm animals, from cellular to ecosystem level. The chapters are developed from papers presented at a satellite meeting of the 9th International Symposium on Ruminant Physiology, held in South Africa in October 1999.Excellent papers from a top list of contributorsEditors of great reputationCovers the current topics of interest
Posted in:

Animal De liberation

In this book, Jan Deckers addresses the most crucial question that people must deliberate in relation to how we should treat other animals: whether we should eat animal products.

Author: Jan Deckers

Publisher: Ubiquity Press

ISBN: 9781909188853

Category: Technology & Engineering

Page: 246

View: 935

Download →

In this book, Jan Deckers addresses the most crucial question that people must deliberate in relation to how we should treat other animals: whether we should eat animal products. Many people object to the consumption of animal products from the conviction that it inflicts pain, suffering, and death upon animals. This book argues that a convincing ethical theory cannot be based on these important concerns: rather, it must focus on our interest in human health. Tending to this interest demands not only that we extend speciesism—the attribution of special significance to members of our own species merely because they belong to the same species as ourself—towards nonhuman animals, but also that we safeguard the integrity of nature. In this light, projects that aim to engineer the genetic material of animals to reduce their capacities to feel pain and to suffer are morally suspect. The same applies to projects that aim to develop in-vitro flesh, even if the production of such flesh should be welcomed on other grounds. The theory proposed in this book is accompanied by a political goal, the ‘vegan project’, which strives for a qualified ban on the consumption of animal products. Deckers also provides empirical evidence that some support for this goal exists already, and his analysis of the views of others—including those of slaughterhouse workers—reveals that the vegan project stands firm in spite of public opposition. Many charges have been pressed against vegan diets, including: that they alienate human beings from nature; that they increase human food security concerns; and that they are unsustainable. Deckers argues that these charges are legitimate in some cases, but that, in many situations, vegan diets are actually superior. For those who remain doubtful, the book also contains an appendix that considers whether vegan diets might actually be nutritionally adequate.
Posted in:

Modelling of Livestock Production Systems

The problems of predicting the growth rate , body composition and feed intake of an animal can be approached by considering the animal to be a purposive system and to ask : ( i ) what is is trying to do ? ( ii ) what does it need to be ...

Author: S. Korver

Publisher: Springer Science & Business Media

ISBN: 0898383730

Category: Medical

Page: 215

View: 785

Download →

A seminar in the Community Programme for the Coordination of Agricultural Research, held in Brussels, Belgium, April 7-9, 1987
Posted in:

Journal of Mathematical Biology

Springer - Verlag Berlin Heidelberg New York J.R. Parks A Theory of Feeding and Growth of Animals production technology . eleven finally relates the theory of the energy balance all animals as open systems must obey , making this book a ...

Author:

Publisher:

ISBN: UCAL:B4933429

Category: Biological models

Page:

View: 480

Download →

Posted in:

Encyclopedia of Ecology

A list of these patterns, which are all related to feeding, assimilation, respiration, growth, development, reproduction and changes in the chemical composition of animals, is provided in Table 1. Subsequently DEB theory provides a set ...

Author: Brian D. Fath

Publisher: Elsevier

ISBN: 9780444641304

Category: Science

Page: 2780

View: 407

Download →

Encyclopedia of Ecology, Second Edition continues the acclaimed work of the previous edition published in 2008. It covers all scales of biological organization, from organisms, to populations, to communities and ecosystems. Laboratory, field, simulation modelling, and theoretical approaches are presented to show how living systems sustain structure and function in space and time. New areas of focus include micro- and macro scales, molecular and genetic ecology, and global ecology (e.g., climate change, earth transformations, ecosystem services, and the food-water-energy nexus) are included. In addition, new, international experts in ecology contribute on a variety of topics. Offers the most broad-ranging and comprehensive resource available in the field of ecology Provides foundational content and suggests further reading Incorporates the expertise of over 500 outstanding investigators in the field of ecology, including top young scientists with both research and teaching experience Includes multimedia resources, such as an Interactive Map Viewer and links to a CSDMS (Community Surface Dynamics Modeling System), an open-source platform for modelers to share and link models dealing with earth system processes
Posted in:

Revue roumaine de biochimie

R. PARKS , A Theory of Feeding and Growth of Animals , Springer - Verlag , Berlin berg New York , 1982 , 322 pages , 123 figures This book represents a peak in the mechanistic interpretation of physiological processes referring to ...

Author:

Publisher:

ISBN: UCAL:B4356826

Category: Biochemistry

Page:

View: 421

Download →

Posted in: