Abstract
The paper considers the influence of the longevity of cows and their productivity on the quantitative indicators of methane emissions from dairy cattle. The following indicators were calculated: indicators of the size of the repair herd with different culling coefficients of young animals and the terms of use of cows; milk production volumes with different age structure of the main herd; average duration of productive longevity of cows in lactation with different values of average annual cow culling coefficients; average milk yield per head of dairy cattle herd and methane yield per kilogram of milk produced. Based on the results obtained, conclusions are drawn and proposals are made in the direction of reducing methane emissions in dairy cattle breeding.
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