TY CONF TI THE STUDY OF INDICATORS OF MILK PRODUCTIVITY OF HOLSTEIN HEIFERS WITH DIFFERENT POLYMORPHISMS OF THE TG5 GENE KW DNA KW gene KW TG5 KW thyroglobulin KW milk productivity KW first heifers KW Holstein breed JO XIV All-Russian Scientific and Practical Conference of Young Scientists “Achievements and Prospects of Development of the Agroindustrial Complex of Russia” with international participation, dedicated to the 300th anniversary of the Russian Academy of Sciences. AU Zinnatov, F.. AU Nikolaeva, K.Y. AU Ahmetov, T.M. AU Zinnatova, F.F. AU Chevtaeva, N.. AU Stafikopulo, M.A. PY 2024 PB TRIA FRC Kazan Scientific Center of RAS