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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 production and portal appearance of volatile fatty acids in dairy cows.

Values of stoichiometric coefficients were estimated to describe the production of volatile fatty acids (VFA) from fermented substrate in the rumen of lactating cows. Coefficient estimates were derived by regression of in vivo data of rumen digestion to a stoichiometric model with non-linear...

Author(s)
Bannink, A.; Kogut, J.; Dijkstra, J.; France, J.; Tamminga, S.; Vuuren, A. M. van
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
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 Linear models for determining digestibility.

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 studied variables in quantitative animal nutrition.

Author(s)
Dhanoa, M. S.; López, S.; France, J.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Modelling protozoal metabolism and volatile fatty acid production in the rumen.

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 rumen.

Author(s)
Dijkstra, J.; Kebreab, E.; France, J.; Bannink, A.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Supporting measurements required for evaluation of greenhouse gas emission models for enteric fermentation and stored animal manure.

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. Supporting measurements and reporting standards for GHG ...

Author(s)
Wagner-Riddle, C.; Kebreab, E.; France, J.; Rapai, J.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Data capture: development of a mobile open-circuit ventilated hood system for measuring real-time gaseous emissions in cattle.

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, CO2 and CH4 contents, measurements of air flow, absolute pressure, temperature and...

Author(s)
Odongo, N. E.; Al-Zahal, O.; Las, J. E.; Kramer, A.; Kerrigan, B.; Kebreab, E.; France, J.; McBride, B. W.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Compartmental models of protein turnover to resolve isotope dilution data.

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 an individual organ or tissue (or whole organism)....

Author(s)
Crompton, L. A.; France, J.; Dias, R. S.; Kebreab, E.; Hanigan, M. D.
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 Modelling phosphorus metabolism.

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 ruminants and monogastric animals described in this...

Author(s)
Kebreab, E.; Vitti, D. M. S. S.; Odongo, N. E.; Dias, R. S.; Crompton, L. A.; France, J.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter

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