A study on estimation of methane gas emission from beef cattle of Bangladesh

Abstract

Population is increasing day by day in Bangladesh. So people are very much engaged in farming now a days. As farming is increasing, so the effect of greenhouse gas also increasing, which is a great threat to our environment. The agricultural sector emits large quantities of greenhouse gas. Which is responsible for global warming (Jahan and Azad 2013). Some of the major greenhouse gas are methane, carbon dioxide, nitrous oxide etc. In our study, we have discussed about the methane emission from beef cattle in Bangladesh. We followed intergovernmental panel of climate change (IPCC) guideline in our whole study (Das et al., 2020). We used Tier 1 and Tier 2 methods for the calculation of methane emission from beef cattle of Bangladesh. In tier 1 method we calculated the methane emission by using emission factor provided by IPCC 2006 and 2019. According to IPCC 2019, we also calculated the methane emission using tier 2 method which is based on dry matter intake. Finally we have compared our calculated value. After calculation, in 2018, 2019, 2020, 2021 total emission of methane from beef cattle based on Tier-1 (IPCC-2006) is 9990.00Gg, 10777.75Gg, 9996.75Gg and 10111.50Gg respectively. Again based on IPCC-2019 emission of methane is 17020.00Gg, 17169.50Gg, 17031.50Gg and 17227.00Gg respectively. Using Tier 2 method (IPCC-2019) methane emission from beef cattle in 2018, 2019, 2020, 2021 is 16087.60Gg, 16228.91Gg, 16098.47Gg and 16283.26Gg respectively.