A Theory of Feeding and Growth of Animals
(Sprache: Englisch)
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...
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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 feeding and growth of animals meets both of the above criteria. The author's knowledge of the literature of animal science and the seriousness of his attempt to incorporate 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.
Inhaltsverzeichnis zu „A Theory of Feeding and Growth of Animals “
1 Introduction.- 1.1 Phenomenology and Etiology.- 1.2 Growth Data and the Growth Equation.- 1.3 Present Mathematical Models of Growth in Perspective.- 1.4 Animals as White Boxes with Output Only.- 1.5 Animals as Black Boxes with Input and Output.- 1.6 Conclusions.- References.- 2 Ad Libitum Feeding and Growth Functions.- 2.1 Live Weight as a Function of Cumulative Food Consumed.- 2.2 The Ad Libitum Feeding Function.- 2.3 The Differential Equations of Ad Libitum Feeding and Growth 33.- References.- 3 A Stochastic Model of Animal Growth.- 3.1 Growth in the Food Consumed Domain as a Markov Process.- 3.2 The Markov Probability Transition Matrix.- 3.3 The Matrix Differential Equation of Animal Growth.- 3.4 Growth as the Solution of the Differential Equation.- 3.5 The Inherent Error ?(W) of Growth.- 3.6 Role of Food Intake.- 3.7 Solving the Differential Equation.- References.- 4 Treatment of Ad Libitum Feeding and Growth Data.- 4.1 Nonlinear Regression - Method and Results by Class of Data.-4.2 Summary and Discussion of the Growth Parameters Across Species and Within Breeds Fed Ad Libitum.- 4.3 The Experimental Error s(W).- References.- 5 The Geometry of Ad Libitum Growth Curves.- 5.1 Ad Libitum Growth as a Trajectory in a Three Dimensional Euclidean Space.- 5.2 The Trace.- 5.3 The Growth Phase Plane.- 5.4 The Ad Libitum Feeding and Growth Discriminant (?).- 5.5 The Z Function.- 5.6 Comparing Ad Libitum Feeding and Growth Across Species Excepting Man.- References.- 6 Growth Response to Controlled Feeding.- 6.1 Controlled Feeding of Cattle.- 6.2 Controlled Feeding of Sheep.- 6.3 Controlled Feeding of Chickens.- 6.4 Complete and Partial Starvation.- 6.5 The Growth Phase Plane and the Taylor Diagonal.- 6.6 The Controlled Feeding and Growth Differential Equation.- 6.7 The Differential Equation of Controlled Feeding and Growth.- References.- 7 The Theory.- 7.1 The Theory as a Set of Differential Equations.- 7.2 The Plan and Execution of Experiment BG 54.- 7.3 The Results of
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Experiment and Their Analysis.- 7.4 Theory Versus the Results of the Experiment.- 7.5 Alternative Ad Libitum Feeding and Growth Functions.- 7.6 Rehabilitation from Controlled Feeding Stress.- 7.7 The Ad Libitum Growth Curve as an Optimum.- 7.8 Determination of Fraps' Productive Energy (PE) of a Foodstuff; a Critical Evaluation.- 7.9 Some Concluding Remarks.- References.- 8 A General Euclidean Vector Representation of Mixtures.- 8.1 Transformation of Mixture (xi) to Vector [yj].- 8.2 Geometric Representation of [yi] in a Euclidean Space.- 8.3 Some Useful Geometric Properties of the Mixture Space.- 8.4 Proteins as Mixtures of Amino Acids.- 8.5 Musculature of Animals as a Mixture of Specific Muscle Masses.- References.- 9 The Effects of Diet Composition on the Growth Parameters.- 9.1 Diet as a Mixture.- 9.2 Nutrient Composition of a Food as a Point in the Nutrition Space.- 9.3 Nutrition Space and Response Surfaces of Monogastrics.- 9.4 Metabolisable Energy as a Plane Response Surface.- 9.5Dietary Energy and Growth Parameters.- 9.6 Dietary Protein and the Growth Parameters.- 9.7 Growth Promoting Ability of Proteins.- 9.8 Effect of Single Amino Acids on the Growth Parameters.- 9.9 Requirement.- References.- 10 The Growth Parameters and the Genetics of Growth and Feeding.- 10.1 Involvement of Growth Functions.- 10.2 An Economic Problem and the Feeding and Growth Parameters.- References.- 11 Energy, Feeding, and Growth.- 11.1 The Power Balance Equation.- 11.2 The Specific Whole Body Combustion Energy, ?.- 11.3 Power Balance and Work.- References.- Appendices.- A. Feeding and Growth Data.- B. Standard Deviation of Live Weight Data.- C. Partial and Complete Starvation Data.- D. Whole Body Combustion Data.- Glossary of Mathematical Symbols.- Glossary of Words and Phrases.
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Bibliographische Angaben
- Autor: John R Parks
- 2012, Softcover reprint of the original 1st ed. 1982, XVI, 324 Seiten, 123 Abbildungen, Maße: 24,4 cm, Kartoniert (TB), Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3642683320
- ISBN-13: 9783642683329
Sprache:
Englisch
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