“…Examples of such studies are the papers by Zawalińska, 2004;O'Donnell, 2010b;Rusielik and Świtłyk, 2012;Pisulewski, 2013, 2014;Marzec et al, 2015;Latruffe and Desjeux, 2016. Animal farms, including dairy farms, constitute a popular area of studies on productivity and technical efficiency. Among others, they were conducted by Latruffe et al, 2005;Balcombe, Fraser, and Kim, 2006;Latruffe et al, 2012;Singbo and Larue, 2016;Darku, Malla, and Tran, 2016;Madau, Furesi, and Pulina, 2017;and by Wilczyński et al, 2020. Research on the technical efficiency of the agricultural environment, agriculture, and farms in Poland was conducted by, among others, Świtłyk, 1999;Rusielik, 2000;Rusielik and Świtłyk, 2009;Zawalińska, 2004;Góral, 2014;Pisulewski, 2013, 2014;Marzec et al, 2015. Source data for research purposes were obtained from the Polish FADN (Farm Accountancy Data Network). The research adopted the dairy farm model consisting in 1 output (Y) and 9 (X) inputs.…”