of the Urals

Russian Journal of Agricultural Research

The publication is registered by the Ministry of the Russian Federation
for Affairs of the Press, Television and Radio Broadcasting and Mass Communication Media.
Registration certificate: PI number 77-12831 on May 31, 2002
Subscription index in catalog «Russian Press» - 16356
ISSN 1997 - 4868 (Print)

The Journal is included in the list of the leading peer-reviewed scientific journals and publications, which should be published by the main results of theses for the degree of doctor and Ph.D.
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Journal is included in the list of VAK (from 25.09.2017), No. 291

ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 03 (170) 2018

Биология и биотехнологии

Морозова Л. А. кандидат сельскохозяйственных наук, доцент Курганская ГСХА имени Т. С. Мальцева

Миколайчик И. Н. доктор сельскохозяйственных наук, профессор Курганская ГСХА имени Т. С. Мальцева

И. В. АРЗИН аспирант Курганская государственная сельскохозяйственная академия имени Т. С. Мальцева



Theexpediency of using yeast probiotic supplements in diets of highly productivecows during the period of ration is grounded. The influence of probiotics ondigestibility of nutrients, cicatricial metabolism, milk production, as well aseconomic indicators of milk production was studied. For the study, four groupsof black-motley breed cows were formed with 10 heads each. During the referenceperiod, the animals were in the same conditions of feeding and maintenance. Inaddition to the main ration, the cows of 1st experimental group were fed ActiveEast in the amount of 20 g/head/day, analogues of the 2nd experimental ones –Optysaf in the amount of 30 g/head/day, the cows of the 3rd experimental group –I-Sak 1026 10 g/head/day. Feeding in the composition of concentrated feeds ofthe yeast probiotic supplement Optisaf in an amount of 30 g/head/day ensured anincrease in the digestibility of nutrients in the diet: dry matter by 2.23 %,organic matter by 2.13 %, crude protein by 2.78 % (P < 0.05), raw fat – 3.47%, crude fiber – 2.86 % (P < 0.05) and nitrogen-free extractives – 1.55 %,and also increased the metabolic processes in the rumen of experimental animalsin comparison with the control group. In the first 100 days of lactation, themilk productivity of cows, in terms of 4 % milk, increased by 336.3 kg, or by 9.83 % (P <0.05), while the cost of milk decreased by 7.72 % and the profitability of itsproduction increased by 12.35 %.


microbiological supplements, feeding cows, digestibility factors, cicatricial metabolism, milk production.


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