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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 A composite model of growth, pregnancy and lactation.

Mathematical models of pre- and postnatal growth, pregnancy and lactation were combined and implemented using object-orientated computer code to form an energy-based model of a dairy cow. Each simulated cow 'grows', can have a computer pregnancy with multiple offspring, growing its fetuses to term, ...

Author(s)
Vetharaniam, I.; Davis, S. R.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for A kinetic model of phosphorus metabolism in growing sheep.

Research in Brazil has been carried out to study phosphorus (P) metabolism in ruminants, by using the isotope dilution technique. The purpose of this study was to use data from balance and kinetic experiments to solve a kinetic model of P metabolism in growing sheep fed with different diets. During ...

Author(s)
Dias, R. S.; Roque, A. R.; Nascimento Filho, V. F.; Vitti, D. M. S. S.; Bueno, I. C. S.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for A mechanistic dynamic model of beef cattle growth.

This chapter presents a mechanistic dynamic model that aims to predict variations of protein and lipid contents of beef cattle carcass. Proteins and lipids in carcass and non-carcass tissues have been distinguished to account for the different energy metabolism of these two components of the body....

Author(s)
Hoch, T.; Agabriel, J.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for A model to evaluate beef cow efficiency.

The beef cattle seed stock industry in the USA is searching for ways to select for improved beef cow efficiency. Most selection indexes for efficiency have a goal of using less resource while obtaining the same outcome in a sustainable environment. However, the inputs required to determine...

Author(s)
Tedeschi, L. O.; Fox, D. G.; Baker, M. J.; Long, K. L.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for A model to simulate the effects of different dietary strategies on the sustainability of a dairy farm system.

A new model is being developed to study the main elements that affect sustainability within a dairy farm by using multiple goal programming. In this work, we describe the main characteristics of this modelling approach and we evaluate, via optimization, the effect of different dietary strategies...

Author(s)
Prado, A. del; Scholefield, D.; Brown, L.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for A pig model for feed evaluation.

This chapter describes a dynamic, semi-mechanistic model of growing pigs. The purpose of the model is to predict growth rate and growth composition from given feed inputs and thereby serve as a basis for a new, nutrient-based feed evaluation system for slaughter pigs. The model consists of two...

Author(s)
Danfær, A.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for A rodent model of protein turnover to determine protein synthesis, amino acid channelling and recycling rates in tissues.

Amino acids for protein synthesis can arise from extracellular (Ec), plasma (Pls) or intracellular (Ic) sources or protein degradation through recycling. Experimentally, the amino acid sources sampled may not represent these specific pools and therefore not represent true sources of amino acids...

Author(s)
Johnson, H. A.; Baldwin, R. L.; Calvert, C. C.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for A simple nutrient-based production model for the growing pig.

The basic principles for a simple nutrient partitioning model for the growing pig are outlined. The proposed model is meant for practical feed evaluation and is based on input data for the actual feed, the actual pig and the actual feeding situation. The system is composed of four steps, including: ...

Author(s)
Boisen, S.
ISBN
2000 CABI (H ISBN 9780851994499)
Type
Book chapter
CABI Book Chapter Info
Cover for A three-compartment model of transmembrane fluxes of valine across the tissues of the hindquarters of growing lambs infected with <i xmlns="http://www.w3.org/1999/xhtml">Trichostrongylus colubriformis</i>.

This review outlines the assumptions of a three-compartment model that describes amino acid (AA) kinetics in the tissues of the hindlimb or hindquarters. As well as determining the appearance and disappearance of AAs, this model predicts the transport of AAs into and out of the intracellular pool...

Author(s)
Roy, N. C.; Bermingham, E. N.; McNabb, W. C.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for Advantages of a dynamical approach to rumen function to help to resolve environmental issues.

Simulation studies demonstrated the difference between current practice (static representation) and a dynamic representation of rumen function. Where current feed evaluation indicated absent or linear responses to changes in dry matter intake (DMI) and exchange of grass and maize silage, simulated...

Author(s)
Bannink, A.; Dijkstra, J.; Kebreab, E.; France, J.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper

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