The increase in atmospheric
CH4 concentration, on the one
hand through the
radiation process, will directly cause climate change, and on the other
hand, cause a lot of changes in atmospheric chemical processes, indirectly causing climate change. The rapid growth of atmospheric
methane has gained attention of governments and scientists. All countries in the world now deal with global climate change as an important task of reducing emissions of
greenhouse gases, but the need for monitoring the concentration of
methane gas, in particular precision monitoring, can be scientifically formulated to provide a scientific basis for emission reduction measures. So far,
CH4 gas emissions of different animal production systems have received extensive research. The
methane emission by ruminant reported in the literature is only estimation. This is due to the various factors that affect the
methane production in ruminant, there are various variables associated with the techniques for measuring
methane production, the techniques currently developed to measure
methane are unable to accurately determine the dynamics of
methane emission by ruminant, and therefore there is an urgent need to develop an
accurate method for this purpose. Currently,
spectroscopy technique has been used and is relatively a more
accurate and reliable method. Various
spectroscopy techniques such as modified
infrared spectroscopy methane measuring system,
laser and
near-infrared sensory system are able to achieve the objective of determining the dynamic
methane emission by both domestic and grazing ruminant. Therefore
spectroscopy technique is an important
methane measuring technique, and contributes to proposing reduction methods of
methane.
