Modelling Nutrient Utilization in Farm Animals

by J. P. McNamara; J. France; D. E. Beever

• ISBN13: 9780851994499
• ISBN10: 0851994490
• Format: Hardcover
• Copyright: 2000-11-30
• Publisher: Cab Intl

Summary

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 ninth International Symposium on Ruminant Physiology, held in South Africa in October 1999.

Table of Contents

Contributors	ix
Preface	xiii
Introduction: History and Future of Modelling Nutrient Utilization in Farm Animals	1	(10)
R.L. Baldwin
Session 1: Ruminal Metabolism
D.E. Beever
J. France
J. P. McNamara
The Role of Thermodynamic in Controlling Rumen Metabolism	11	(14)
R.A. Kohn
R.C. Boston
Modelling Lipid Metabolism in the Rumen	25	(12)
J. Dijkstra
W.J.J. Gerrits
A. Bannink
J. France
Towards a More Accurate Representation of Fermentation in Mathematical Models of the Rumen	37	(12)
B.N. Nagorcka
G.L.R. Gordon
R.A. Dynes
Simple Allometric Models to Predict Rumen Feed Passage Rate in Domestic Ruminants	49	(14)
A. Cannas
P.J. Van Soest
Ruminal Metabolism of Buffer-soluble Proteins, Peptides and Amino Acids In Vitro	63	(10)
P. Uden
Session 2: Absorption and Metabolism
R.A. Kohn
Models to Interpret Degradation Profiles Obtained from In Vitro and In Situ Incubation of Ruminant Feeds	73	(14)
S. Lopez
J. France
J. Dijkstra
M.S. Dhanoa
Modelling Production and Portal Appearance of Volatile Fatty Acids in Dairy Cows	87	(16)
A. Bannink
J. Kogut
J. Dijkstra
J. France
S. Tamminga
A.M. van Vuuren
Modelling Energy Expenditure in Pigs	103	(12)
J. van Milgen
J. Noblet
Aspects of Modelling Kidney Dynamics	115	(12)
B. Robson
M. Vlieg
Evaluation of a Representation of the Limiting Amino Acid Theory for Milk Protein Synthesis	127	(18)
M.D. Hanigan
J. France
L.A. Crompton
B.J. Bequette
Multiple-entry Urea Kinetic Model: Effects of Incomplete Data Collection	145	(18)
G. Zuur
K. Russell
G.E. Lobley
Session 3: Growth and Development
D. Sauvant
Evaluation of a Growth Model of Preruminant Calves and Modifications to Simulate Short-term Responses to Changes in Protein Intake	163	(12)
W.J.J. Gerrits
P.L. van der Togt
J. Dijkstra
J. France
Simulation of the Development of Adipose Tissue in Beef Cattle	175	(8)
R.D. Sainz
E. Hasting
A Simple Nutrient-based Production Model for the Growing Pig	183	(14)
S. Boisen
Second-generation Dynamic Cattle Growth and Composition Models	197	(14)
J.W. Oltjen
A.B. Pleasants
T.K. Soboleva
V. H. Oddy
Modelling Interactions Between Cow Milk Yield and Growth of its Suckling Calf	211	(16)
F. Blanc
J. Agabriel
P. Sabatier
A Mechanistic Dynamic Model of Beef Cattle Growth	227	(14)
T. Hoch
J. Agabriel
Session 4: Ruminant Production in Various Situations
R.C. Boston
Modelling Nutrient Utilization in Growing Cattle Subjected to Short or Long Periods of Moderate to Severe Undernutrition	241	(12)
G.Q. Witten
F.D. Richardson
An Integrated Cattle and Crop Production Model to Develop Whole-farm Nutrient Management Plans	253	(10)
T.P. Tylutki
D.G. Fox
Modelling Nutrient Utilization by Livestock Grazing Semiarid Rangeland	263	(18)
F.D. Richardson
B.D. Hahn
S.J. Schoeman
Using the Cornell Net Carbohydrate and Protein System Model to Evaluate the Effects of Variation in Maize Silage Quality on a Dairy Farm	281	(8)
T.P. Tylutki
D.G. Fox
M. McMahon
P. McMahon
Session 5: Nutrient Metabolism
J. Dijkstra
Challenge and Improvement of a Model of Post-absorptive Metabolism in Dairy Cattle	289	(14)
J.P. McNamara
G.J. Phillips
A Rodent Model of Protein Turnover to Determine Protein Synthesis, Amino Acid Channelling and Recycling Rates in Tissues	303	(14)
H.A. Johnson
R.L. Baldwin
C.C. Calvert
Modelling Relationships Between Homoeorhetic and Homoeostatic Control of Metabolism: Application to Growing Pigs	317	(12)
D. Sauvant
P.A. Lovatto
Model for the Interpretation of the Energy Metabolism in Farm Animals	329	(18)
A. Chudy
Linear Models of Nitrogen Utilization in Dairy Cows	347	(6)
E. Kebreab
R. Allison
R. Mansbridge
D.E. Beever
J. France
Isotope Dilution Models for Partitioning Amino Acid Uptake by the Liver, Mammary Gland and Hindlimb Tissues of Ruminants	353	(8)
L.A. Crompton
J. France
B.J. Bequette
J.A. Maas
M.D. Hanigan
M.A. Lomax
J. Dijkstra
Session 6: Production and Evaluation Models
J.P. McNamara
The Conversion of a Scientific Model Describing Dairy Cow Nutrition and Production to an Industry Tool: the CPM Dairy Project	361	(18)
R.C. Boston
D.G. Fox
C. Sniffen
E. Janczewski
R. Munson
W. Chalupa
The Utilization of Prediction Models to Optimize Farm Animal Production Systems: the Case of a Growing Pig Model	379	(14)
P. Jean dit Bailleul
J.F. Bernier
J. van Milgen
D. Sauvant
C. Pomar
A Pig Model for Feed Evaluation	393	(16)
A. Danfoer
Index	409