A. AMERKHANOV3, N.A. KOMBAROVA2, I.S. TURBINA2, E.V. FEDOROVA2, I.V. GUSEV1, N.V. ZHAVORONKOVA1 1All-Russian Research Institute of Animal Husbandry, Russian Academy of Agricultural Sciences, pos. <...> Dubrovitsy, Podolsk Region, Moscow Province, 142132 Russia, e-mail farida.abilova@yandex.ru; 2Head Center for Farm Animal Reproduction, Plc., 3, ul. <...> Bykovo, Moscow Province, 142143 Russia, e-mail csio-secr@yandex.ru, komnina@list.ru, oaohcr@mail.ru, Fedorova_oaohcr@mail.ru 3Ministry of Agriculture of the Russian Federation, 1/11, Orlikov per., Moscow, 107139 Russia Received June 19, 2014 Abstract Nowadays in commercial animal husbandry the intensive metabolizer genotypes are basically used. <...> In such a case the animal health and performance should be characterized neither by the presence or absence of clinical manifestations of diseases, nor by decreased productivity or reproductive ability, but by the parameters of metabolism and its early violations at a subclinical level. <...> Herein we summarize original data on the levels of the essential macroelements, in particular Ca, P, Mg, Fe and chlorides, and microelements, the Cu, Zn, Se and Mn, in blood serum of the superior sires as influenced by their age, beef or milk specialization and RED-factor expression. <...> In our experiment the 2-7 year meat Aberdeen Angus, Herefordm, Lymousine cattle, milk Red-and-White Holsteine, Black-and-White Holsteine, Ayrshire cattle, and also universal Brown Swiss cattle were assessed (n = 49 in total). <...> The following parameters were investigated: an ejaculate volume, the spermatozoid number per ml, the percentage of spermatozoid motility in the native, diluted, frozen and thawed semen, and in the samples frozen, thawed and then incubated at 38 °С for 5 hours. <...> The total spermatozoid number per ejaculate, semen dose number per each sire, frozen semen dose number sampled during 24 hour, and the percentage of culled native ejaculates were also assessed. <...> It was shown the microelements to influence the semen quality and quantity. <...> According to the obtained data, the differences in macro- and microelement levels due to specialization and RED-factor expression are unreliable, while the changes in Са:Р ratio and Cu, Zn and chloride levels in blood serum influence the semen quality in the bull sires. <...> Our data suggest that in each cattle breed the physiological standard <...>