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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 Simulation of rumen particle dynamics using a non-steady state model of rumen digestion and nutrient availability in dairy cows fed sugarcane.

An extant dynamic model of digestion and absorption of nutrients in cattle fed sugarcane was adapted for non-steady state feeding conditions. This modified model includes mechanisms of particle size reduction and delay in availability of particles and intracellular contents for microbial...

Author(s)
Collao-Saenz, E. A.; Bannink, A.; Kebreab, E.; France, J.; Dijkstra, J.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for Production efficiency of ruminants: feed, nitrogen and methane.

This chapter discusses the production efficiency of ruminants, particularly cattle, in relation to feeds, nitrogen excretion and methane emission. Focus is given on the production efficiency of cattle, primarily that of dairy cattle, at the animal level. Improvements in production efficiency are...

Author(s)
Dijkstra, J.; France, J.; Ellis, J. L.; Strathe, A. B.; Kebreab, E.; Bannink, A.
ISBN
2013 CABI (H ISBN 9781780640426)
Type
Book chapter
CABI Book Chapter Info
Cover for Simple allometric models to predict rumen feed passage rate in domestic ruminants.

A database was developed from the literature (36 publications) to explore the mechanisms controlling rumen feed passage rate (Kp) and to predict it. The database included the results of 157 different dietary treatments and passage rate measurements with 45 treatments on dry sheep or wethers, 42 on...

Author(s)
Cannas, A.; Soest, P. J. van
ISBN
2000 CABI (H ISBN 9780851994499)
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 Methodological considerations for measuring phosphorus utilization in pigs.

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 ingredients for formulating pig diets and...

Author(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.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Factors regulating feed efficiency and nutrient utilization in beef cattle.

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 utilization in beef cattle are described and discussed.

Author(s)
Swanson, K.; Miller, S.
ISBN
2008 CABI (H ISBN 9781845933548)
Type
Book chapter
CABI Book Chapter Info
Cover for Investigating daily changes in food intake by ruminants.

Trajectories of food intake for 12 sets of animals (weekly average intakes of four individual growing sheep, mean daily intakes of four pens of three growing cattle, and the mean daily intakes of four groups of six pregnant fallow does) were examined. The raw data exhibited expected seasonal...

Author(s)
Dryden, G. M.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for The role of rumen fill in terminating grazing bouts of dairy cows under continuous stocking.

This experiment was aimed at studying the role of rumen fill in signalling the termination of grazing bouts of dairy cows using a combination of experimental and modelling approaches. The day was divided into three main periods (06:00-12:00 h, 12:00-18:00 h and 18:00-24:00 h) during which the three ...

Author(s)
Taweel, H. Z.; Tas, B. M.; Tamminga, S.; Dijkstra, J.
ISBN
2006 CABI Publishing (H ISBN 9781845930059)
Type
Book chapter; Conference paper
CABI Book Chapter Info
Cover for Growth.

Author(s)
Murdoch, G. K.; Okine, E. K.; Dixon, W. T.; Nkrumah, J. D.; Basarab, J. A.; Christopherson, R. J.
ISBN
2005 CABI Publishing (H ISBN 9780851998145)
Type
Book chapter

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