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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 Evaluation of a growth model of preruminant calves and modifications to simulate shortterm responses to changes in protein intake.

Recently, a mechanistic simulation model was developed which integrates protein and energy metabolism of preruminant calves of 80 to 240 kg live-weight (LW). The model can be used to predict the rate of gain of weight, protein and fat from nutrient input. A serial slaughter experiment was conducted ...

Author(s)
Gerrits, W. J. J.; Togt, P. L. van der; Dijkstra, J.; France, J.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for Mathematical modelling in animal nutrition - introduction.

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 presented.

Author(s)
France, J.; Kebreab, E.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Mathematical representation of the partitioning of retained energy in the growing pig.

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, Pd is not limited by the animals' upper limit to Pd ...

Author(s)
Lange, C. F. M. de; Morel, P. C. H.; Birkett, S. H.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Growth functions.

This chapter surveys a variety of growth equations, including commonly encountered ones such as the monomolecular, logistic, Gompertz and Richards, amongst others. These exhibit a range of shapes, encompassing diminishing returns and sigmoidal behaviour. Some of the equations can be derived from a...

Author(s)
Thornley, J. H. M.; France, J.
ISBN
2007 CABI (H ISBN 9780851990101)
Type
Book chapter
CABI Book Chapter Info
Cover for Simple dynamic growth models.

This chapter extends the previous chapter by presenting several models some of which are obtained by modification of the simplest growth functions, but are often not analytically soluble. First, ways in which simple exponential growth can be limited are considered. Then the representation of delays ...

Author(s)
Thornley, J. H. M.; France, J.
ISBN
2007 CABI (H ISBN 9780851990101)
Type
Book chapter
CABI Book Info
Cover for Nutrient digestion and utilization in farm animals: modelling approaches.

This book contains 34 chapters on nutrition physiology and presents scientific research in modelling nutrient digestion and utilization in domestic animals, including cattle, sheep, pigs, poultry and fishes. It is divided into 6 parts that cover fermentation, absorption and passage; growth and...

Author(s)
Kebreab, E.; Dijkstra, J.; Bannink, A.; Gerrits, W. J. J.; France, J.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book; Conference proceedings
CABI Book Info
Cover for Quantitative aspects of ruminant digestion and metabolism.

This book aims to bring together the quantitative approaches concerned with elucidating mechanisms used in the study of ruminant digestion, metabolism and related areas from different contributing practitioners, experts and scientists. A great deal of research had been carried out on the digestive...

Author(s)
Dijkstra, J.; Forbes, J. M.; France, J.
ISBN
2005 CABI Publishing (H ISBN 9780851998145)
Type
Book
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 Efficiency of amino acid utilization in simple-stomached animals and humans - a modelling approach.

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 one hand, models reduce complex systems down into...

Author(s)
Moughan, P. J.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Aspects of energy metabolism and energy partitioning in broiler chickens.

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 presented.

Author(s)
Lopez, G.; Leeson, S.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter

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