“…In Ukraine, the assessing of pig meat productivity, reproductive qualities of sows and boars, fattening and meat qualities of their offspring have been studied by Bazhov & Komlatskiy (1989), Kabanov (2009), Tatulov (2009), Rybalko et al, (2010), Fedorenkova et al, (2012), Aknevskyy et al, (2013), Bankovskaja & Voloschuk (2015), Balatskii et al, (2015Balatskii et al, ( , 2018, and Khalak et al, (2020а). The problems of early prediction of fattening, slaughter and meat qualities of pigs, physicochemical properties and chemical composition of muscle tissue and blubber are pf great importance and being studied by domestic and foreign scientists (Eidrigevich & Rayevskaya, 1966;Christianson, 1991;Allison & Laven, 2000;Levchenko, 2002;Berezovskyy & Khatko, 2005;Tatulov, 2009;Susol, 2015;Tserenyuk, 2017Tserenyuk, , 2018Kramarenko et al, 2018Kramarenko et al, , 2019Khalak et al, 2020b). The aim of the work is to study physicochemical properties and chemical composition of muscle tissue in Large White weaners taking into account class of their distribution by total protein content and serum creatinine concentration, as well as to calculate the level of correlations between the main quantitative traits.…”