The Voluntary Food Intake of Farm Animals - 1st Edition - ISBN: 9780408111546, 9781483161839

The Voluntary Food Intake of Farm Animals

1st Edition

Authors: J. M. Forbes
eBook ISBN: 9781483161839
Imprint: Butterworth-Heinemann
Published Date: 20th March 1986
Page Count: 216
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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


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© Butterworth-Heinemann 1986
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About the Author

J. M. Forbes

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