Effects of different dietary modifications on carbon emissions of dairy cows based on mathematical modeling

With the expansion of the dairy farming industry, the phenomenon of methane emissions has also increased year by year. To reduce the greenhouse effect problems caused by methane emissions, this article lists several measures to improve the diet of dairy cows to reduce methane emissions: increasing the forage quality, replacing the grass silage with the maize silage and fat supplementation. Based on the basic principles of methane production in dairy cows, we further explained the basic reasons why the three methods can reduce methane emissions in dairy cows. Later, we integrated the information of some statistical data and confirmed the validity of the three methods through the statistical code analysis through Jupyter Notebook. At the end of the paper, we pointed out the weakness: our paper neglected the difference between different kinds of dairy cows, the potential harm caused by fat supplementation, the interaction between three kinds of dietary modification and potential economic cost. We hope future researchers will limit pastures to regional analysis and consider the disadvantages of the model.