Type: Chapter

The impact of improving feed efficiency on the environmental impact of livestock production

Authors

James K. Drackley

University of Illinois at Urbana-Champaign

Christopher K. Reynolds

University of Reading

Publication date:

19 July 2021

ID: 9781801462419

E-Chapter format

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Description

This chapter examines the impact of improving feed efficiency on the environmental impact of livestock production. It starts by discussing the relation between greenhouse gases and dairy production, highlighting how important it is to the dairy sector to find ways of decreasing greenhouse gas output. The chapter then moves on to discuss the origins of methane and reactive nitrogen excretions in ruminants. A section on improving feed conversion efficiency is also included, which is then followed by a review of the nutritional practices that can be used to enhance feed conversion efficiency and decrease methane excretion. The chapter also examines the nutritional practices that can be used to increase milk protein efficiency and nitrous oxide excretion as well. Discussions on genetics and feed conversion efficiency and postabsorptive metabolism and feed conversion efficiency are also provided.

Table of contents

1 Introduction
2 Greenhouse gases and dairy production
3 Origin of methane and reactive nitrogen excretions
4 Feed conversion efficiency
5 Nutritional practices to enhance feed conversion efficiency and decrease CH4 excretion
6 Nutritional practices to increase milk protein efficiency and decrease N2O excretion
7 Genetics and feed conversion efficiency
8 Postabsorptive metabolism and feed conversion efficiency
9 Conclusion
10 Future trends in research
11 Where to look for further information
12 References