Feed supplement " Vita-Fortse-three A-1" adding efficiency into lactating cows rations

Feeding " Vita-Fortse-three A-1" supplement to the milking cows in the dose of 0,8 kg in a day per head in the winter stall conditions at observed deficiency of sulphur, zinc, copper, cobalt, iodine, vitamin D in the rations contributes to increasing of milk productivity for 12,5% and decreasing of feed intake for 8,6%. But fat and protein content in milk become stable. Commercial efficiency of expenses is 6,7 roubles per 1 rouble.