Estimation of energy consumption and greenhouse gas emissions of dairy farming Case study: Ilam province

Abstract

Introduction: The purpose of this study was to analyze the trend of energy consumption and
emission of greenhouse gases in the milk production process in 36 dairy farms.
Materials & Methods: The required information was obtained through a specialized
questionnaire with specialized experts of milk production units and operators in 1399 in Ilam
province, Ivan city.
Results: The results showed that the input and output energies per head were 5636.79 and
599418.37 megajoules per cow, respectively. Energy indices including efficiency, productivity
and energy intensity for cattle were 1.11, 0.15 kg/MJ and 6.45 MJ/kg per cow, respectively.
The results of Cobb Douglas function showed the effect of manpower energy inputs, machinery
and animal feed equipment with regression coefficients of 0.18, 0.02 and 0.11 on the yield of
milk produced per positive livestock, respectively. The effect of fossil fuel and electricity inputs
on negative performance was calculated with -0.04 and -0.05 regression coefficients,
respectively.
Conclusion: The total pollution from greenhouse gas emissions of dairy cattle breeding units
due to the use of diesel fuel inputs, electricity, machinery and equipment, gasoline and natural
gas are 66.5, 16.17, 8.72, 7.85 and respectively, respectively. 0.72% equivalent to 601.32 kg of
carbon dioxide was obtained per cow, the highest amount was related to diesel fuel input and
the lowest was related to natural gas input.