Indicators of mineral-energy metabolism in cows of different physiological state when feeding tanamine Zn

¹ Belgorod State Agrarian University named after V.Ya. Gorin, Belgorod Region, Belgorod District, Maysky Village, 1 Vavilova Street, Russia
² Kursk State Agricultural Academy named after I.I. Ivanov, Kursk region, Kursk city, 70 Karl Marx Street, Russia

^* Corresponding author: vic.eriomenko@yandex.ru

Abstract

The paper presents the experimental results to study the effect of Tanamine Zn complex preparation on the mineral-energy metabolism of dry and newly calved highly productive (with an amount of more than 8 thousand kg) cows. During the dry period (60 days), the preparation was administered at 20.0 g/head/day. The metabolites under study were monitored at the beginning, middle and end of the dry period (60, 30, 15-10 days before calving), as well as on the 15 and 30 days after calving. 15 days before calving the use of the additive led to an increase in calcium concentrations by 27.1% (p<0.05), magnesium – by 37.7% (p<0.05), chlorine – by 12.7% (p<0.001) and cholesterol – by 13.1% (p>0.05). The effect of tanamine Zn on newly calved cows 15 and 30 days after calving led to multi-directional changes in the studied indicators: an increase in the activity of alkaline phosphotase – by 48.9% and 67.9% (p<0.05), an increase in the concentration of magnesium – by 104.6% and 50.0% (p<0.001), potassium – by 12.0% and 13.1% (p<0.05) with a decrease in cholesterol – by 45.4% (p<0.01) and 55.3% (p<0.001) respectively). Besides, on the 30th day after calving, feeding tanamine Zn led to a decrease in glucose by 38.3% (p<0.001).