Influence of the genotype of sires on zinc concentration in the muscle tissue of offspring

Abstract

The selection of sires whose off spring are predisposed or resistant to the accumulation of chemical elements in muscle tissue is especially relevant for geochemical provinces with abnormal concentrations of trace elements. The concentration of zinc in the muscle tissue of 34 steers who were off spring of four sires of Holstein breed has been studied. Muscle tissue has been taken from a diaphragm weighing 100 g. The zinc level in the meat of steers was determined by atomic emission spectrometry with inductively coupled plasma on an IRIS Advantage spectrometer. The animals were housed in the Promyshlenskyareain the Kemerovo region under the same environmental conditions. Due to the small number of variants among the off spring of the sire Bonaer, robust indicators of descriptive statistics were calculated. In order to identify the influence of the genotype of sires on the level of zinc in the muscle tissue of off spring the Kraskell-Wallis criterion has been used. Median values of zinc levels in muscle tissue in the off spring of sires Bonaer, Brio, Malstrom and Fabio were 37, 46, 45 and 64 mg/kg, respectively. On this basis, the off spring of sires can be grouped into a ranked series: Bonaer< Brio