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Contents

Metabolism and Energetic Definitions 57 Glycogenesis, Gluconeogenesis, and Production of ATP 60 Glycolysis 67 Glycolysis 61 Lipogenesis and Lipolysis 70 The Cori Cycle 64 Interconversions and Catabolism of Proteins 78 The Krebs Cycle 64 Structure and Function of DNA and RNA 79 Intermediary Metabolism: Processing and Protein Synthesis 80 Pathways 67 Chapter Summary 82

While our focus is physiology, as we have already seen, understanding physiological function requires an appreciation of various aspects of chemistry, biochem­istry, physics, and other disciplines.

The purpose of this chapter is to introduce you to some of the basics of how cells carry out essential steps to obtain the energy needed for various activities and to generate the build­ing blocks required for growth and development. Please appreciate that in many respects our discussions are rudimentary. However, this foundation will give you the tools and concepts to understand the roles and actions of each physiological system, and to excel in advanced courses in nutrition, reproduction, lactation, or other biological and animal-oriented courses.

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Source: Akers R. Michael, Denbow D. Michael. Anatomy and Physiology of Domestic Animals. 2nd edition. — Wiley-Blackwell,2013. — 685 p.. 2013
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