PSXI-17 Evaluation of Influence of the Total Accumulation of Toxic Elements in Blood Serum on the Indicators of Milk Productivity of the Holstein Cows

Abstract The main objective was to study the milk productivity of lactating cows depending on level total accumulation toxic metals in blood serum. experimental part work carried out clinically healthy Holstein (n=45; lactation stage - 20-40 days after calving) bred a single farm. elemental composition serum studied for 4 chemical elements (Al, Pb, Sn, Sr) by ICP AES and MS. indicators were evaluated yield fat, protein, lactose, dry matter, SOMO average daily yield. To assess magnitude load body cows, coefficient Ktox (µg/ml) calculated. calculate coefficient, sum concentrations some used: Ktox=Al+Pb+Sn+Sr. Based data value serum, three groups formed: group I included with minimum (Ktox=0.128 (0.088-0.142) μg/ml relative sample; II an (Ktox=0.229 (0.206-0.276) µg/ml; Group III maximum (Ktox=0.395 (0.306-0.453) µg/ml. Comparative analysis showed that (group I) outperformed individuals from terms fat 15.4 (P£0.001) 19.7% (P£0.001), protein 5.6 12.5% (P£0.05), lactose -10.9 (P£0.01) 18.4% matter -7.6 12.8% (P£0.05) 9.4 17.5% (P£0.01), respectively. Thus, course study, it registered increase heavy animals, decreases.