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Biochemical and physiological determinants of feed efficiency in dairy cattle

Code: 9781838791650
John McNamara, Washington State University, USA

Chapter synopsis: The energetic, physiological or metabolic efficiency of an animal depends on various factors, including the ingredients and physical form of the animal’s diet; the bacterial population in their digestive tract; and the interactions between their hormones, receptors, organs and metabolism patterns. In this chapter, we give a brief review of the physiology and biochemistry of the cow, and then offer an overview of the development of the biology of lactation as a research field, with particular emphasis on the growing role of genetics. Section 4 then discusses a case study on the biochemical determinants of feed efficiency in dairy cows, and finally Section 5 explores the effects of genetic variation on metabolism.

DOI: 10.19103/AS.2016.0006.09
Table of contents 1 Introduction 2 The physiological and biochemical makeup of a dairy animal 3 Development of the research field: a brief overview 4 A case study on the biochemical determinants of feed efficiency 5 Mechanisms and effects of simple genetic variation 6 Summary and conclusions 7 Future trends in research 8 Where to look for further information 9 References

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