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Mathematical modelling in animal nutrition.
Mathematical modelling in animal nutrition.

Editors(s): France, J. Kebreab, E.

2008 CABI (H ISBN 9781845933548)

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... More

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Mathematical modelling in animal nutrition - introduction.
Mathematical modelling in animal nutrition - introduction.
Chapter: 1 (Page no: 1)

Authors(s): France, J. Kebreab, E.

2008 CABI

The role and practice of mathematical modelling with regard to animal nutrition and growth are discussed; also, an overview of the different mathematical approaches that may be adopted in this respect is... More

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Linear models for determining digestibility.
Linear models for determining digestibility.
Chapter: 2 (Page no: 12)

Authors(s): Dhanoa, M. S. López, S. France, J.

2008 CABI

A brief overview of linear regression is presented in this chapter, followed by an appraisal examining the use of linear models to estimate digestibility, one of the main components of the nutritive value of feedstuffs, and hence one of the most... More

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Non-linear functions in animal nutrition.
Non-linear functions in animal nutrition.
Chapter: 3 (Page no: 47)

Authors(s): López, S.

2008 CABI

The aims in this chapter are: (1) to introduce briefly some of the basic principles of non-linear regression; (2) to present some of the non-linear functions used in animal nutrition to represent time-dependent processes and events; and (3) to... More

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Interesting simple dynamic growth models.
Interesting simple dynamic growth models.
Chapter: 4 (Page no: 89)

Authors(s): Thornley, J. H. M.

2008 CABI

This paper illustrates the consequences of various biological assumptions in leading to models which may be valuable in phenomenological or semi-empirical nutritional studies in animals. Some of these simple models are extensions of growth models,... More

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The dilemma in models of intake regulation: mechanistic or empirical.
The dilemma in models of intake regulation: mechanistic or empirical.
Chapter: 5 (Page no: 121)

Authors(s): Poppi, D. P.

2008 CABI

In this review, a simple mechanistic model of forage intake, based on the interaction between physical and metabolic mechanisms of intake, is examined as an example of how mechanistic approaches advance the understanding of animal nutrition and... More

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Models to measure and interpret exchange of metabolites across the capillary bed of intact organs.
Models to measure and interpret exchange of metabolites across the capillary bed of intact organs.
Chapter: 6 (Page no: 142)

Authors(s): Cant, J. P. Qiao, F.

2008 CABI

In this chapter, discussions on the main modelling methods on the transport of metabolites in blood, which include both steady-state and non-steady-state models, are... More

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Modelling protozoal metabolism and volatile fatty acid production in the rumen.
Modelling protozoal metabolism and volatile fatty acid production in the rumen.
Chapter: 7 (Page no: 170)

Authors(s): Dijkstra, J. Kebreab, E. France, J. Bannink, A.

2008 CABI

The aim of this chapter is to describe two key aspects in the supply of absorbed nutrients, i.e. the quantitative representation of protozoal metabolism, and the quantitative representation of volatile fatty acid production in the... More

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Modelling methane emissions from farm livestock.
Modelling methane emissions from farm livestock.
Chapter: 8 (Page no: 189)

Authors(s): Mills, J. A. N.

2008 CABI

This chapter reviews how models have been developed to predict methane production from individuals, groups of animals and, more broadly, from farming systems. It discusses the techniques used for model development and summarizes the progress made... More

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Supporting measurements required for evaluation of greenhouse gas emission models for enteric fermentation and stored animal manure.
Supporting measurements required for evaluation of greenhouse gas emission models for enteric fermentation and stored animal manure.
Chapter: 9 (Page no: 204)

Authors(s): Wagner-Riddle, C. Kebreab, E. France, J. Rapai, J.

2008 CABI

This chapter briefly reviews processes and controlling factors involved in greenhouse gases (GHG) production and emission associated with animal production as well as the currently used models that describe GHG emissions for animal production.... More

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Data capture: development of a mobile open-circuit ventilated hood system for measuring real-time gaseous emissions in cattle.
Data capture: development of a mobile open-circuit ventilated hood system for measuring real-time gaseous emissions in cattle.
Chapter: 10 (Page no: 225)

Authors(s): Odongo, N. E. Al-Zahal, O. Las, J. E. Kramer, A. Kerrigan, B. Kebreab, E. France, J. McBride, B. W.

2008 CABI

This chapter describes a mobile, open-circuit ventilated hood system for measuring real-time gaseous exchange in large ruminants at the farm level. It uses improvements in technology for the determination of O2,... More

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Efficiency of amino acid utilization in simple-stomached animals and humans - a modelling approach.
Efficiency of amino acid utilization in simple-stomached animals and humans - a modelling approach.
Chapter: 11 (Page no: 241)

Authors(s): Moughan, P. J.

2008 CABI

The objective of this contribution is to describe how early attempts on modelling dietary nitrogen and amino acid metabolism in simple-stomached animals from a causal perspective led to a systematic approach to protein metabolism research. On the... More

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Compartmental models of protein turnover to resolve isotope dilution data.
Compartmental models of protein turnover to resolve isotope dilution data.
Chapter: 12 (Page no: 254)

Authors(s): Crompton, L. A. France, J. Dias, R. S. Kebreab, E. Hanigan, M. D.

2008 CABI

In this chapter, the applications in the animal sciences of dynamic modelling, based on the rate:state formalism, with Type I solutions are illustrated. This chapter deals with modelling animal processes, i.e. specific components or functions of... More

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Assessment of protein and amino acid requirements in adult mammals, with specific focus on cats, dogs and rabbits.
Assessment of protein and amino acid requirements in adult mammals, with specific focus on cats, dogs and rabbits.
Chapter: 13 (Page no: 295)

Authors(s): Shoveller, A. K. Atkinson, J. L.

2008 CABI

Understanding a comparative approach to protein and amino acid requirements necessitates information on: (1) the animals' natural food preferences; (2) differences in digestive anatomy and physiology; (3) differences in protein and amino acid... More

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Mathematical representation of the partitioning of retained energy in the growing pig.
Mathematical representation of the partitioning of retained energy in the growing pig.
Chapter: 14 (Page no: 316)

Authors(s): Lange, C. F. M. de Morel, P. C. H. Birkett, S. H.

2008 CABI

The focus of this review is the assessment of calculation rules to represent the partitioning of retained energy between body protein deposition (Pd) and lipid deposition (Ld) when Pd is driven by energy intake. During this energy-dependent phase,... More

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Aspects of energy metabolism and energy partitioning in broiler chickens.
Aspects of energy metabolism and energy partitioning in broiler chickens.
Chapter: 15 (Page no: 339)

Authors(s): Lopez, G. Leeson, S.

2008 CABI

Discussions on the energy requirements and metabolism of broilers, and how these affect their body condition and growth are presented. Also, discussions on the implications for modelling energy requirements are... More

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Modelling phosphorus metabolism.
Modelling phosphorus metabolism.
Chapter: 16 (Page no: 353)

Authors(s): Kebreab, E. Vitti, D. M. S. S. Odongo, N. E. Dias, R. S. Crompton, L. A. France, J.

2008 CABI

In this chapter, examples of empirical, kinetic and mechanistic models of phosphorus (P) metabolism in ruminants and monogastric animals, viz. cattle, goats, sheep, horses, pigs and poultry, are discussed. The mechanistic models of P flow in... More

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Methodological considerations for measuring phosphorus utilization in pigs.
Methodological considerations for measuring phosphorus utilization in pigs.
Chapter: 17 (Page no: 370)

Authors(s): Fan, M. Z. Shen, Y. Yin, Y. L. Wang, Z. R. Wang, Z. Y. Li, T. J. Rideout, T. C. Huang, R. L. Archbold, T. Yang, C. B. Wang, J.

2008 CABI

This chapter reviews the major processes of digestive and post-absorptive utilization of dietary P in pigs, examines the methodology for measuring wholebody P utilization and discusses the criteria developed for assessing P bioavailability in feed... More

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The prediction of the consequences of pathogen challenges on the performance of growing pigs.
The prediction of the consequences of pathogen challenges on the performance of growing pigs.
Chapter: 18 (Page no: 398)

Authors(s): Kyriazakis, I. Sandberg, F. B. Brindle, W.

2008 CABI

The purpose of this chapter is to develop a general framework that will enable progress to be made in our ability to predict pig performance in the presence of infectious stressors. Focus is given on subclinical infection, i.e. infection that does... More

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Factors regulating feed efficiency and nutrient utilization in beef cattle.
Factors regulating feed efficiency and nutrient utilization in beef cattle.
Chapter: 19 (Page no: 419)

Authors(s): Swanson, K. Miller, S.

2008 CABI

Approaches used to measure feed efficiency and nutrient utilization in beef cattle are reviewed; also, the potential regulatory factors important in regulating efficiency and the potential approaches to improve the efficiency of nutrient... More

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Models of nutrient utilization by fish and potential applications for fish culture operations.
Models of nutrient utilization by fish and potential applications for fish culture operations.
Chapter: 20 (Page no: 442)

Authors(s): Bureau, D. P. Hua, K.

2008 CABI

This chapter reviews some of the challenges facing fish culture operations and potential model applications. Recent work on the development of practical bioenergetic and elemental mass balance models is reviewed. Limitations of the current... More

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Integrated approaches to evaluate nutritional strategies for dairy cows.
Integrated approaches to evaluate nutritional strategies for dairy cows.
Chapter: 21 (Page no: 462)

Authors(s): Bannink, A. Reijs, J. W. Dijkstra, J.

2008 CABI

This chapter discusses the possibility of applying more integrated approaches when evaluating nutritional strategies for dairy cows, simultaneously in detail and from several aspects. The different levels of aggregation that may be covered by... More

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Modelling lactation potential in an animal model.
Modelling lactation potential in an animal model.
Chapter: 22 (Page no: 485)

Authors(s): Hanigan, M. D. Palliser, C. C. Rius, A. G.

2008 CABI

The efforts that have been undertaken to develop prediction models capable of describing the effects of nutrition and animal factors on milk and milk component yields are reviewed. The general principles behind these prediction models, including... More

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The diary of Molly.
The diary of Molly.
Chapter: 23 (Page no: 507)

Authors(s): Baldwin, R. L.

2008 CABI

A discussion on the development and creation of a predictive model for lactation potential (Molly) which is able to describe the effects of nutrition and animal factors on milk yield and dairy performance in general, is... More

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Modelling sugarcane utilization by dairy cows in the tropics.
Modelling sugarcane utilization by dairy cows in the tropics.
Chapter: 24 (Page no: 526)

Authors(s): Assis, A. G. Campos, O. F. Dijkstra, J. Kebreab, E. France, J.

2008 CABI

Discussions on the use of sugarcane, either as a whole plant or in the form of sugar processing byproduct, as a source of forage for cattle in Brazil are presented. Focus is given on the influence of sugarcane feeding on dairy cattle... More

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Simulation exercises for animal science MSc students: rumen digestion and pig growth.
Simulation exercises for animal science MSc students: rumen digestion and pig growth.
Chapter: 25 (Page no: 544)

Authors(s): Gerritis, W. J. J. Kebreab, E. Kramer, M. R. Dijkstra, J.

2008 CABI

The objective of this chapter is to provide two complete teaching modules for MSc students of animal science (in Wageningen University, The Netherlands) with minimal background in modelling, but knowledge in animal nutrition at the BSc level. In... More

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