Authors:
N. А. NIKOLAEVA, сandidate of аgricultural sciences, leading researcher,
P. P. BORISOVA, сandidate of agricultural sciences, senior researcher,
N. M. ALEKSEEVA, сandidate of agricultural sciences, senior researcher,
Yakut Scientific Research Institute of Agriculture named after M. G. Safronov (23/1 Bestuzheva-Marlinskogo str., 677001, Yakutsk).
Abstract. In the conditions of Yakutia in many farms, the rearing of young cattle is mainly for one winter and two summers, while feeding in the after-milk period from 8–9 to 13–14 months of age is done with winter stall. Only proper care and feeding in winter time of young cattle allows to increase productivity (growth of live weight) when kept indoors. The use of energysaturated feed additives in rations of young Simmental breeds based on dry shot grains, zeolite-hongurin, mineral-vitamin supplement «Zdravur Mu-Mu» and probiotic «Sahabaktisubtil» positively influenced the productivity of animals. Thus, the feeding of these additives allowed to obtain an average daily increase in the live weight by 6.1–8.3 % more, an additional increase of one head in the first experimental group 4.2 kg, in the second experimental group 5.7 kg, relative to the control group. Received income per head during the time of the experiment 82.0 thousand rubles in the control group, 97.0 thousand rubles in the first experimental and 115.0 thousand rubles in the second experimental group, while the profitability level was respectively 10.9, 12.2 and 14.6 %. Economically more effective in growing the young in the stall period was the 2nd experimental group of heifers, who received mixed feeds enriched with zeolite-hongurin at a rate of 1 % dry matter and probiotic «Sahabaktisubtil» (10 ml per day per head) in the diet. The novelty of the work consists in obtaining new knowledge on testing the effectiveness of the use of energy-saturated feed, feed additives, probiotics for youngsters for a year, ensuring their fullfledged feeding in Yakutia.
Keywords: dry brewer’s grain, zeolite-hanguren, «Shabakthani», MIA, young, мetabolic energy, average daily gain.
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