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CAB eBooks

Ebooks on agriculture and the applied life sciences from CAB International

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CABI Book Chapter Info
Cover for Modelling energy expenditure in pigs.

In pigs, more than 50% of the ingested energy is dissipated as heat. The heat production of animals can be measured using indirect calorimetry, which is based on the concept that heat is produced through oxidation of nutrients. A technique was developed that allows modelling the dynamics of heat...

Author(s)
Milgen, J. van; Noblet, J.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for Evaluation of a representation of the limiting amino acid theory for milk protein synthesis.

A model describing amino acid (AA) metabolism by the mammary glands of the lactating cow has been constructed (Hanigan et al., 2000a). Milk protein production was predicted using a mathematical procedure to determine which among histidine (His), lysine (Lys), methionine (Met), threonine (Thr) and...

Author(s)
Hanigan, M. D.; France, J.; Crompton, L. A.; Bequette, B. J.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for Linear models of nitrogen utilization in dairy cows.

Linear models describing relationships between nitrogen (N) intake and N output were constructed based on N-balance data from experiments conducted at the Centre for Dairy Research (CEDAR). The models were then applied to a second set of data derived from a series of N-balance experiments conducted ...

Author(s)
Kebreab, E.; Allison, R.; Mansbridge, R.; Beever, D. E.; France, J.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for Isotope dilution models for partitioning amino acid uptake by the liver, mammary gland and hindlimb tissues of ruminants.

Isotope dilution models for partitioning leucine uptake by the liver and mammary gland, and tyrosine uptake by the hindlimb of ruminants have been constructed and solved in the steady state. The models require the measurement of plasma flow rate through the tissue beds in combination with...

Author(s)
Crompton, L. A.; France, J.; Bequette, B. J.; Maas, J. A.; Hanigan, M. D.; Lomax, M. A.; Dijkstra, J.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for The utilization of prediction models to optimize farm animal production systems: the case of a growing pig model.

In the last 25 years, mathematical models for growing animals have been developed to predict growth from knowledge on animal biology. The increasing precision of these models allows them to be used to evaluate economic return and/or environmental impact of the simulated production system. It is...

Author(s)
Bailleul, P. J. dit; Bernier, J. F.; Milgen, J. van; Sauvant, D.; Pomar, C.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for Non-linear functions in animal nutrition.

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 examine the current and potential use of these...

Author(s)
López, S.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Interesting simple dynamic growth models.

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, such as analytical models of delayed growth and...

Author(s)
Thornley, J. H. M.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for The dilemma in models of intake regulation: mechanistic or empirical.

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 help devise new means of manipulating intake. The...

Author(s)
Poppi, D. P.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Models to measure and interpret exchange of metabolites across the capillary bed of intact organs.

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 presented.

Author(s)
Cant, J. P.; Qiao, F.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Modelling methane emissions from farm livestock.

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 to date. Some aspects of methanogenesis is also...

Author(s)
Mills, J. A. N.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter

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