Methods of Calculating the Emissions of Greenhouse Gases from Manure from Sheep and Goat’s Breeding in the Republic of Bulgaria

The authors propose a universal method for determining the emissions of greenhouse gases from sheep and goat‘s farming. The authors use specific Bulgarian energetic units for measurement of the energy in fodders/excrements and requirements of the ruminants (base - net energy). The methodology is illustrated with examples (base is a farm with 100 sheep/goats with 120% reproductive capacity). On this basis logical reasoning calculation formulas are introduced. They are a good basis for digitizing of the calculations. The calculating procedure is universal and can be easily adapted to different conditions (number of animals, reproductive capacities, periods of realization of lambs/kids etc.).