Foreword
Chapter 1. Introduction: Factors in the Efficiency Complex
1.1 - Efficiency and profit, immediate and long range
1.2 - Growth, form, and function
1.3 - Organizational energy or the energy expended for the “work” of growth and morphogenesis
1.4 - Basal metabolism, maintenance cost, and efficiency
1.5 - Nutritional categories
1.6 - Organismic and atomistic viewpoints
1.7 - Appendix
Chapter 2. Energetics, Energy Units, and Dietary-Energy Categories
2.1 - Energetics
2.2 - Energy units and energetic equivalents
2.3 - Feed and nutrient energy categories
2.4 - Summary and appendix
Chapter 3. Energetic Efficiencies of Growth and Work Processes
3.1 - Energetic efficiency of muscular work and the maintenance complication
3.2 - Energetic efficiency of growth and the maintenance complication
3.3 - Energetic efficiency of milk and egg production
3.4 - Relation between the net energy category of feed and the efficiency of productive processes
3.5 - Summary
Chapter 4. Specific Dynamic Action and Efficiency of Productive Processes
4.1 - Specific dynamic action, basal metabolism, and endogenous nitrogen excretion
4.2 - Plane of nutrition and SDA
4.3 - Nutrient unbalance and SDA
4.4 - Agricultural implications
4.5 - Summary
Chapter 5. Plane of Nutrition, the Principle of Diminishing Increments, and Efficiency
5.1 - The principle of diminishing increments
5.2 - The principle of diminishing increments and the net energy values of cattle and rabbit feeds
5.3 - The principle of diminishing increments and food consumption during growth
5.4 - The principle of diminishing increments and milk production
5.5 - The principle of diminishing increments and egg production efficiency
5.6 - The principle of diminishing increments and muscular-work efficiency
Chapter 6. Metabolic Catalysts in the Efficiency Complex: Enzymes, Minerals and Vitamins in Biologic Oxidations
6.1 - Introduction
6.2 - Aerobic and anaerobic oxidations with special reference to intense muscular work
6.3 - Oxidation-reduction potentials and biologic oxidation
6.4 - Interrelations between minerals, vitamins, enzymes, and hormones in biologic oxidations: an illustration of unity in diversity
6.5 - Note on biologic synthesis with special reference to CO2 assimilation in hetertrophs
6.6 - Summary and appendix
I. B vitamins or bios
II. Ascorbic acid
III. Fat-soluble vitamins
IV. Mineral groups in oxidoreductions
V. General definitions
Chapter 7. Metabolic Catalysts in the Efficiency Complex: Hormones
7.1 - Orientation
7.2 - Hormones in reproduction and lactation
7.3 - Energy-metabolism hormones, thyroid and adrenal-medulla
7.4 - Adrenal cortex
7.5 - Calcium-phosphorus-metabolism hormones, the parathyroids
7.6 - Carbohydrate-fat metabolism hormones
7.7 - Anterior-pituitary and growth hormones
7.8 - Notes on miscellaneous hormones
7.9 - Summary
Chapter 8. Metabolic Catalysts in the Efficiency Complex: Seasonal Rhythms
8.1 - Introduction
8.2 - Historic notes
8.3 - Mechanism of seasonal sex periodicity
8.4 - Seasonal food supply rhythms in relation to seasonal sex activity
8.5 - Seasonal periodicity in relation to efficiency with special reference to egg and milk production
8.6 - Seasonal growth and metabolic rhythms
8.7 - Summary
Chapter 9. Metabolic Catalysts in the Efficiency Complex: Diurnal Rhythms
9.1 - Introduction
9.2 - The literature
9.3 - Diurnal metabolic rhythm in the rat, its control and effect on the apparent SDA
9.4 - Summary
Chapter 10. Homeostasis and Organismic Theory
10.1 - Introduction
10.2 - Body-weight regulation
10.3 - Body-water regulation
10.4 - Carbohydrate-level regulation
10.5 - Calcium-level regulation
10.6 - Fat-level regulation
10.7 - Oxygen and acid level regulation
10.8 - Neuro-endocrine homeostasis
10.9 - Social homeostasis
10.10 - Notes on organismic or field theory and on research methods
10.11 - Summary
Chapter 11. Homeothermy, Temperature in Life Processes, and Productive Efficiency
11.1 - Introduction
11.2 - Relative productivities and efficiencies of homeotherms and poikilotherms
11.3 - Temperature coefficients and the van’t Hoff-Arrhenius equation in life processes
11.4 - Age changes in homeothermy
11.5 - Homeothermic mechanisms
11.6 - Applications
11.7 - Summary
Chapter 12. Methods in Animal Calorimetry
12.1 - Principles
12.2 - Methods of indirect calorimetry
12.3 - Food calorimetry
12.4 - Historic comments
12.5 - Summary and general comments
Chapter 13. Basal Energy and Protein Metabolism in Relation to Body Weight in Mature Animals of Different Species
13.1 - Definitions
13.2 - Basal metabolism and the “surface law”
13.3 - Metabolically-effective body size vs. surface area
13.4 - Properties of equations relating surface area or metabolism to body size
13.5 - Relation of basal energy metabolism to body weight in mature animals of different species
13.6 - Relation of endogenous nitrogen, creatinine, and neutral sulfur excretion to body weight in mature animals of different species
13.7 - Summary
13.8 - Appendix
Chapter 14. Metabolism and Pulmonary Ventilation in Relation to Body Weight During Growth
14.1 - Definitions
14.2 - Metabolism in relation to body weight in the white rat, with notes on cerebral metabolism
14.3 - Resting metabolism and pulmonary ventilation in dairy cattle
14.4 - Resting metabolism in goats
14.5 - Resting metabolism and pulmonary ventilation in horses
14.6 - Metabolism in man
14.7 - Prenatal heat production in relation to birth weight
14.8 - Estimating the heat increment of gestation and total prenatal heat production
14.9 - Endogenous nitrogen excretion during growth
14.10 - Metabolism per unit weight as a function of weight and of age during rapid growth
14.11 - Summary and conclusions
Chapter 15. Maintenance Needs in Relation to Basal Metabolism, Body Size, and Productive Efficiency
Chapter 16. Time relations of Growth and Individuals and Populations
16.1 - Introduction and definitions
16.2 - The shape of the age curve of growth of individuals and populations
16.3 - Definitions and quantitative respresentations of growth rates
16.4 - The principle of mass action and the self-accelerating phase of growth
16.5 - Extension of the principle of mass action to the self-inhibiting phase of growth
16.6 - Genetic growth constants
16.7 - Note on the relation between average and individual growth curves
16.8 - Growth of the human population in the United States
16.9 - Comparison of our growth equations with some others
16.10 - Summary
16.11 - Appendix
Chapter 17. Linear Growth, Form, and Function
17.1 - Introduction and definitions
17.2 - Notes on dimensional analysis
17.3 - Equations relating part to whole
17.4 - Relation between organ weight and total body weight
17.5 - Linear growth and form
17.6 - Estimating weight of cattle from chest girth
17.7 - Estimating nutritive condition of cattle from height at withers
17.8 - Note on the relation of weight to height in humans
17.9 - Estimating the amount of wool or feathers from body weight
17.10 - Summary
17.11 - Appendix
Chapter 18. Aging in Relation to Growth and Efficiency with Special Reference to Milk and Egg Production
18.1 - Physicochemical theory of aging
18.2 - Control of aging
18.3 - Criteria of aging and the prime of life
18.4 - Quantitative analysis of aging data
18.5 - Summary and appendix
Chapter 19. Time relations of Growth and Individuals and Populations
19.1 - Physical versus physiological clocks
19.2 - Post-pubertal equivalence in weight growth
19.3 - Age equivalence based on the proportionality between two biologically equivalent points
19.4 - Pre-pubertal equivalence in weight growth
19.5 - Senescence equivalence
19.6 - Summary
Chapter 20. Nutritional Aspects in the Efficiency Complex
20.1 - Introduction: Species and individual differences in dependence on food for vitamins and animo acids
20.2 - “Nutritional wisdom”
20.3 - The ad libitum and paired-feeding methods for the nutritional evaluation of foods
20.4 - Balance between nutrients
20.5 - General vitamin relations in nutrition
20.6 - Vitamins in relation to the neuro-endocrine and neuro-muscular systems
20.7 - Amino acid relations in nutrition
20.8 - Notes on mineral relations in nutrition
20.9 - Note on energy relations in nutrition
20.10 - Summary and appendix
Chapter 21. Milk: Nutritional, Social, and Physiological Aspects
21.1 - Introduction
21.2 - Nutritional importance of milk
21.3 - Composition of milk
21.4 - Physico-chemical aspects of lactation
21.5 - The heat increment of lactation during feeding and fasting
21.6 - Energetic efficiency of milk production
21.7 - Summary
21.8 - Appendix
Chapter 22. The Monetary Economy of Milk Production
22.1 - “Dairy merit”: quantitative definition
22.2 - Lactationally effective body size: quantitative definition
22.3 - Evaluation of dairy merit
22.4 - The influence of dairy merit on profit in animals of equal body weight
22.5 - The influence of body weight on profit in animals of equal dairy merit
22.6 - The influence of plane of nutrition on profit
22.7 - Summary
Chapter 23. Egg Production: Nutritional and Energetic Efficiency Aspects
23.1 - Similarities and differences between egg and milk
23.2 - Energetic efficiency of egg production
23.3 - Influence of live weight on gross efficiency of egg production
23.4 - Influence of production level on gross efficiency of egg production
23.5 - Feeding standard for poultry
23.6 - Interrelation between profit, gross efficiency of egg production, body size, and egg size
23.7 - Summary
23.8 - Appendix
Chapter 24. Energetic Efficiency of Muscular Work and Indices of Work-Reserve Capacity
24.1 - Introduction
24.2 - Work performance and its energetic efficiency
24.3 - Relative metabolism in steady, maximum, and brief peak effort
24.4 - Mechanisms limiting work capacity
24.5 - Measuring work capacity
24.6 - Relative economy of horse and tractor
24.7 - Summary
24.8 - Appendix
Chapter 25. Summary and Integrating Discussion
25.1 - Summary
25.2 - Integrating discussion
25.3 - Summary of summary
Conversion Factors
Author’s Index
Subject Index
Initial Genome-Wide Association Study of Feed Intake Related Traits in Beef Cattle
National Program for Genetic Improvement of Feed Efficiency in Beef Cattle Update
Feed Efficiency Terms Defined
Watch for more information available from
Iowa State University Beef Center