Influence of chelations on dairy productivity of cows in different periods of manufacturing cycle

Abstract

A. Horchanok, N. H ubanova, V. Bomko, O. Kuzmenko, R. Novitskiy, O. Sobolev, M. Tkachenko, N. Prisjazhnjuk

The research has established the positive effect of the organic form of mixed ligand complexes Cu, Zn and Мn on the milk productivity of high-producting cows of Holstein breed. It was proved that cows of the second experimental group which consumed mixed ligand complexes Cu, Zn and Mn in composition of fodder in the amount of 100% by concentration of metal had the highest dairy productivity in the period of milking. According to the indicator of the natural fat milk yield the advantage was 12% (р ≤ 0.01), but fat milk 8.5%. In recalculation of milk yield of fat 4% advantage was 21.3% (р ≤ 0.,001). By the level of protein in milk experimental cows had an advantage 3.4%.
In the main period of experiment the gross natural milk yield per cow increased by 10.9%, fat content on 0.11%, indicator of milk yield of basic fat on 14.2% (р ≤ 0.001), it was due to changing sulfates Мn, Cu and Zn on mixed ligand complexes Мn, Cu and Zn, and these elements have a better assimilability. According to the results of the experimental study, the duration of the service-period of cows in the experimental group was 44 days shorter than in the control, and 22.6% lower in the index of insemination.

Keywords: High-producting cows; ration; premix; trace elements; sulfates; mixed ligand complexes; Cu; Zn; Mn; milk productivity; milk fat; milk protein; index of insemination

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