The Voluntary Food Intake of Farm Animals

The Voluntary Food Intake of Farm Animals

1st Edition - March 20, 1986

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  • Author: J. M. Forbes
  • eBook ISBN: 9781483161839

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Description

The Voluntary Food Intake of Farm Animals offers a wide discussion on food intake among farm animals. The book presents various studies, facts, details, and theories that are relevant to the subject. The first chapter begins by explaining the basic definition and significance of voluntary food intake. This topic is followed by discussions on meal patterns, the main features of eating, and the similarities between species. The next chapter explores theories about the food intake control, which are divided into two types: single-factor theories and multiple-factor theories. In Chapter 3, the discussion is on the food’s pathway, including elaborations on the various receptors. Chapter 4 considers the central nervous system’s involvement in the voluntary food intake and the energy balance regulation. The next couple of chapters highlight the possible reasons that affect food intake; among them are pregnancy, fattening, physical growths, and the environment. In the book’s remaining chapters, the discussion revolves around grass intake and the prediction and manipulation of voluntary food intake. The book serves as a valuable reference for undergraduates and postgraduates of biology and its related fields.

Table of Contents


  • 1 Introduction

    Significance of Voluntary Food Intake

    Main Features of Eating

    Methods of Measuring Food Intake

    Analysis of Meal Patterns

    Similarities and Differences between Species

    Summary

    2 Review of Theories of Food Intake Control

    Single-Factor Theories

    Multiple-Factor Theories

    Summary

    3 Negative Feedback Pathways

    Oropharyngeal Receptors

    Mechanoreceptors in Stomach and Intestines

    Chemoreceptors in Stomach and Intestines

    Osmoreceptors

    Liver Receptors

    Temperature Receptors

    Blood-Borne Factors in the General Circulation

    Summary

    4 Central Nervous Control

    Lesioning Studies

    Electrical Stimulation

    Chemical Stimulation

    Physiological Responses of the Brain to Feeding

    Brain Temperature

    Energy Status of the Brain

    Summary

    5 Effects of Physiological State and Animal Productivity

    Growth

    Fattening

    Estrus

    Pregnancy

    Lactation

    The Laying Hen

    Summary

    6 Dietary Factors Affecting Intake

    Digestibility and Energy Concentration

    Protein

    Amino Acid Deficiency and Imbalance

    Deficiencies and Excesses of other Dietary Constituents

    Specific Appetites

    Water Deprivation

    Fasting

    Frequency of Feeding

    Sensory Factors

    Water Intake

    Summary

    7 Environmental Factors Affecting Intake

    Environmental Temperature

    Photoperiod

    Social Factors

    Housing

    Other Environmental Factors

    Disease

    Summary

    8 Intake of Fresh and Conserved Grass

    Measurement of Intake at Pasture

    Herbage Intake

    Conserved Forages

    Summary

    9 Prediction of Voluntary Intake

    Pigs

    Poultry

    Ruminants

    Summary

    10 Manipulation of Voluntary Intake

    Pigs

    Poultry

    Ruminants

    Summary

    References

    Index


Product details

  • No. of pages: 216
  • Language: English
  • Copyright: © Butterworth-Heinemann 1986
  • Published: March 20, 1986
  • Imprint: Butterworth-Heinemann
  • eBook ISBN: 9781483161839

About the Author

J. M. Forbes

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