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Ebooks on agriculture and the applied life sciences from CAB International

CABI Book Chapter

Livestock production and climate change.

Book cover for Livestock production and climate change.

Description

This 395-paged-book aims to raise awareness among scientists, academics, students, livestock farmers and policy makers of the twin inter-related and inter-dependent complex mechanisms of livestock rearing and climate change. The contents are divided into sections: one on livestock production, one on climate change and one on enteric methane amelioration. In the first section, decisive issues such ...

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Chapter 16 (Page no: 245)

Thermodynamic and kinetic control of methane emissions from ruminants.

CH4 emissions occur directly from animal digestion (enteric) and from animal waste that is stored under anaerobic conditions. In both regards, CH4 emissions depends on kinetic and thermodynamic factors. With kinetic control, the profile of products formed depends on the relative rates of the different competing reactions. In turn, the rates of reactions depend on substrate concentrations and enzyme activities, and these enzyme activities depend on microbial growth or enzyme synthesis. With thermodynamic control, which pathway branches are available and the direction of metabolite flow depends on the concentrations of reactants and products. Biologists have focused on controlling the kinetic elements of fermentation such as enzyme function, microbial activity, gene expression or provision of substrates. However, fermentation is often controlled by thermodynamics. In chemistry, thermodynamics is quantified using Gibbs energy calculations. Whether or not a reaction can proceed spontaneously in the forward direction is represented by the change in Gibbs energy (ΔG), which can be calculated based on the ratio of products and reactants in the system. Using this calculation, a strongly negative ΔG indicates that a reaction could proceed strongly in the forward direction without the addition of energy to the system. A strongly positive value of ΔG indicates the reaction cannot proceed in the forward direction without the addition of energy to the system, and it may even run in the reverse direction. The analysis of thermodynamics in different situations in the rumen or manure storage facility can identify when CH4 may be controlled kinetically by affecting the rates of reactions, or thermodynamically by affecting substrate or product concentrations.

Other chapters from this book

Chapter: 1 (Page no: 1) Overview. Author(s): Prasad, C. S. Malik, P. K. Bhatta, R.
Chapter: 2 (Page no: 8) Feed resources vis-à-vis livestock and fish productivity in a changing climate. Author(s): Blümmel, M. Haileslassie, A. Herrero, M. Beveridge, M. Phillips, M. Havlik, P.
Chapter: 3 (Page no: 25) Strategies for alleviating abiotic stress in livestock. Author(s): Sejian, V. Iqbal Hyder Malik, P. K. Soren, N. M. Mech, A. Mishra, A. Ravindra, J. P.
Chapter: 4 (Page no: 61) Nitrogen emissions from animal agricultural systems and strategies to protect the environment. Author(s): Kohn, R. A.
Chapter: 5 (Page no: 74) Nutritional strategies for minimizing phosphorus pollution from the livestock industry. Author(s): Ray, P. P. Knowlton, K. F.
Chapter: 6 (Page no: 90) Metagenomic approaches in harnessing gut microbial diversity. Author(s): Thulasi, A. Lyju Jose Chandrasekharaiah, M. Rajendran, D. Prasad, C. S.
Chapter: 7 (Page no: 100) Proteomics in studying the molecular mechanism of fibre degradation. Author(s): Singh, N. K.
Chapter: 8 (Page no: 111) Perspective on livestock-generated GHGs and climate. Author(s): Takahashi, J.
Chapter: 9 (Page no: 125) Carbon footprints of food of animal origin. Author(s): Flachowsky, G.
Chapter: 10 (Page no: 146) Carbon sequestration and animal-agriculture: relevance and strategies to cope with climate change. Author(s): Devendra, C.
Chapter: 11 (Page no: 162) Climate change: impacts on livestock diversity in tropical countries. Author(s): Banik, S. Pankaj, P. K. Naskar, S.
Chapter: 12 (Page no: 183) Climate change: effects on animal reproduction. Author(s): Jyotirmoy Ghosh Dhara, S. K. Malik, P. K.
Chapter: 13 (Page no: 202) Climate change: impact of meat production. Author(s): Musalia, L. M.
Chapter: 14 (Page no: 214) Indigenous livestock resources in a changing climate: Indian perspective. Author(s): Ahlawat, S. P. S. Pushpendra Kumar Kush Shrivastava Sahoo, N. R.
Chapter: 15 (Page no: 229) Enteric methane emission: status, mitigation and future challenges - an Indian perspective. Author(s): Raghavendra Bhatta Malik, P. K. Prasad, C. S.
Chapter: 17 (Page no: 263) Ionophores: a tool for improving ruminant production and reducing environmental impact. Author(s): Bell, N. Wickersham, T. Sharma, V. Callaway, T.
Chapter: 18 (Page no: 273) Residual feed intake and breeding approaches for enteric methane mitigation. Author(s): Berry, D. P. Lassen, J. Haas, Y. de
Chapter: 19 (Page no: 292) Acetogenesis as an alternative to methanogenesis in the rumen. Author(s): Gagen, E. J. Denman, S. E. McSweeney, C. S.
Chapter: 20 (Page no: 304) Immunization and tannins in livestock enteric methane amelioration. Author(s): Uyeno, Y.
Chapter: 21 (Page no: 318) Phage therapy in livestock methane amelioration. Author(s): Gilbert, R. A. Ouwerkerk, D. Klieve, A. V.
Chapter: 22 (Page no: 336) Feed-based approaches in enteric methane amelioration. Author(s): Malik, P. K. Bhatta, R. Soren, N. M. Sejian, V. Mech, A. Prasad, K. S. Prasad, C. S.
Chapter: 23 (Page no: 360) Methanotrophs in enteric methane mitigation. Author(s): Soren, N. M. Malik, P. K. Sejian, V.
Chapter: 24 (Page no: 376) Summary. Author(s): Malik, P. K. Bhatta, R. Saravanan, M. Baruah, L.

Chapter details

  • Author Affiliation
  • Department of Animal and Avian Sciences, University of Maryland, College Park Building 142, College Park, MD 20472, USA.
  • Year of Publication
  • 2015
  • ISBN
  • 9781780644325
  • Record Number
  • 20153123684