Contents

Contributors

Preface

Introduction: History, Appreciation and Future Focus

Session 1: Fermentation, Absorption and Passage

1. The Nordic Dairy Cow Model, Karoline – Development of Volatile Fatty Acid Sub-model

2. A Three-compartment Model of Transmembrane Fluxes of Valine across the Tissues of the Hindquarters of Growing Lambs Infected with Trichostrongylus colubriformis

3. Using Rumen Degradation Model to Evaluate Microbial Protein Yield and Intestinal Digestion of Grains in Cattle

4. Simulation of Rumen Particle Dynamics using a Non-steady State Model of Rumen Digestion and Nutrient Availability in Dairy Cows Fed Sugarcane

5. Modelling Fluxes of Volatile Fatty Acids from Rumen to Portal Blood

6. The Role of Rumen Fill in Terminating Grazing Bouts of Dairy Cows under Continuous Stocking

7. Functions for Microbial Growth

8. Obtaining Information on Gastric Emptying Patterns in Horses from Appearance of an Oral Acetaminophen Dose in Blood Plasma

Session 2: Growth and Development

9. A Model to Evaluate Beef Cow Efficiency

10. Prediction of Energy Requirement for Growing Sheep with the Cornell Net Carbohydrate and Protein System

11. Prediction of Body Weight and Composition from Body Dimension Measurements in Lactating Dairy Cows

12. Relationships between Body Composition and Ultrasonic Measurements in Lactating Dairy Cows

13. Empirical Model of Dairy Cow Body Composition

14. Simulating Chemical and Tissue Composition of Growing Beef Cattle: From the Model to the Tool

15. Representation of Fat and Protein Gain at Low Levels of Growth and Improved Prediction of Variable Maintenance Requirement in a Ruminant Growth and Composition Model

16. Growth Patterns of Nellore vs British Beef Cattle Breeds Assessed Using a Dynamic, Mechanistic Model of Cattle Growth and Composition

Session 3: Mineral Metabolism

17. A Kinetic Model of Phosphorus Metabolism in Growing Sheep

18. Dynamic Simulation of Phosphorus Utilization in Salmonid Fish

19. Development of a Dynamic Model of Calcium and Phosphorus Flows in Layers

20. Estimating the Risk of Hypomagnesaemic Tetany in Dairy Herds

Session 4: Methodology

21. Modelling the Effects of Environmental Stressors on the Performance of Growing Pigs: from Individuals to Populations

22. Empirical Modelling through Meta-analysis vs Mechanistic Modelling

23. Iterative Development, Evaluation and Optimal Parameter Estimation of a Dynamic Simulation Model: a Case Study

24. Segmented, Constrained, Non-linear, Multi-objective, Dynamic Optimization Methodology Applied to the Dairy Cow Ration Formulation Problem

Session 5: Environmental Impact

25. A Model to Simulate the Effects of Different Dietary Strategies on the Sustainability of a Dairy Farm System

26. Advantages of a Dynamical Approach to Rumen Function to Help to Resolve Environmental Issues

27. Evaluation of Models to Predict Methane Emissions from Enteric Fermentation in North American Dairy Cattle

Session 6: Production and Evaluation Models

28. Investigating Daily Changes in Food Intake by Ruminants

29. An Ingredient-based Input Scheme for Molly

30. Metabolic Control: Improvement of a Dynamic Model of Lactational Metabolism in Early Lactation

31. Rostock Feed Evaluation System – an Example of the Transformation of Energy and Nutrient Utilization Models to Practical Application

32. The Nordic Dairy Cow Model, Karoline – Description

33. The Nordic Dairy Cow Model, Karoline – Evaluation

34. A Composite Model of Growth, Pregnancy and Lactation

Index

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B

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E

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H

I

K

L

M

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P

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T

U

V

W